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Working With Plastics

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Some people are not very familiar working with plastics. So we will continuously be adding useful info about plastics, here are few first ones we put together: Joining and Gluing ABS Painting parts with molded-in colors - a great partnership. Your Guide To ABS Drop us a note if you find this info useful. If you have more questions/topics you'd like us to cover in future posts, please respond to this thread or submit suggestion on our website using this form
The Power of Smallᵀᴹ
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Do you remember the time when most of the things were made here, they were durable, repairable and they would last for a very long time? Do you remember the time when shop and other hands-on trades training were part of the school curriculum? And you also probably remember when all this deteriorated, was bought and moved oversees and centralized by mega corporations... And this is great for few industries, but for a lot of small shop and inventors, makers and hobbyists, there is a real need in local distributed manufacturing. We are looking for your help to spread the word about our new initiative which we call "The Power of Small". What is The Power of Smallᵀᴹ ? • Small businesses doing big projects with low amounts of capital; • Office-desk sized machines making large parts - 100lbs and more; • On-shore, distributed manufacturing on a national or international scale; • Converting 100% waste plastics directly into viable finished goods - affordably and locally; • A...

Clausing 1771 Drill Press Restoration

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I picked up a Clausing variable speed drill press from a Craigslist ad. I offered the guy $200.00 and he accepted. The drill press was in decent overall condition, and had a new motor on it. I disassembled the machine and cleaned up and painted everything. Mechanically, it was in very good condition, and the only real repair work I did was to straighten a few of the handle arms. One really nice feature is the table lift, which works great on that heavy table (btw: the table doesn't have a single drill mark in it!) This is my second Clausing variable speed drill press. The first one is in my metal shop, this one will be in my wood shop. Jack Fort Loramie, Ohio
Rebuilding the head on a South Bend 4219 1956 mill
VN Finally Got A Slotter Attachment
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Finally picked up a slotter attachment that I have been looking for. Probably paid a bit much, but it's practically new. Stripped it and cleaned out the old gunk. Back together already, quickest rebuild yet. Missing one oil cap and the arbor, but I have a print for the arbor. All I did was clean it. Jason

Working With Plastics

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Some people are not very familiar working with plastics. So we will continuously be adding useful info about plastics, here are few first ones we put together: Joining and Gluing ABS Painting parts with molded-in colors - a great partnership. Your Guide To ABS Drop us a note if you find this info useful. If you have more questions/topics you'd like us to cover in future posts, please respond to this thread or submit suggestion on our website using this form

Unique Chess Set

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Just when you thought "what else can be done with the chess set", a new idea comes along... This is what a chess set using Plasti-Block™ ABS dual color rods could look like. Other color combinations can also be fun! Let us know what else would you like to see modeled using this product. We are looking forward to hear your ideas. Plasti-Block™ Team
Unique Two-Layered Chess Set.

A Nice Gear Tutorial #1

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I'm going to make some gears soon and came across this while brushing-up and refreshing my memory. Of course, the Machinist's Handbook has it all but, this is a very nicely authored and to-the-point tutorial. This is based on Diametral Pitch and not the Module method. I have some other guides based on Module method but need to check the copyright information. Enjoy... Ray

Making Frank's Cranks

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Finally got around to taking some photos of my process as I make some of my string winding cranks. Here's one with a koa handle: These cranks feature a soft head made of low density polyethylene, an angle of 83-degrees to simulate wrist rotation, and a solid bearing in the handle. Interestingly, one of the first questions I get about them is, "How do you achieve that angle?" So, I'll start the description with that in mind. . . The only commercially made part is the little brass ball, which I drill almost all the way through with a 6.4mm drill that gives me a .252: hole, making for a nice sliding fit for a 1/4" precision ground aluminum rod: Here, I'm using my tiny Rusnok milling machine. I have the ball set into a matching cavity I milled by plunging with sa 1/2" ball end mill into the steel soft jaws on my old 4" Kurt vise. By the way, I get my soft jaws for vises and chucks from monsterjaws.com - no affiliation - they sell CNC made jaws for about what I'd pay for raw...
Making a couple of threaded spindle backing plates for my lathe
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When I sold my Atlas 10F24, I held on to my Bison 5” 3J, as it was fairly new. Naturally I needed to make a new backing plate to mount it onto the new lathe. The old plate was 1 1/2” X 8 while the new spindle is 2 1/4” X 8, so I needed new metal to do this. I recently purchased 2 backing plates from Busy Bee Tools. They are 8” semi raw castings. They are turned to clean off the rough cast surface and the center hole is 1” ID unthreaded. First I started by reading up on what could be the rights and wrongs in making these backing plates. Recent posting here by various people, too many to list, have been of excellent help. I make a copy of my spindle, so that I had a plug to try the threads as they neared finish size. I used the 3 wire method to make the plug match the spindle. Once the readings were the same between the two, I was finished. I did stamp the diameter and tpi for future reference. I am making two backing plates. One for the above Bison chuck and the second for...

5c collet chuck

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Hi All I have a mod “3910-5” 5c chuck made in Polland”did a search and it came back to a Bison with out the yellow medallion with the buff on it. I thought these were really good chucks? It is mounted on a D1-4 back plate that has less than .0002 run out on the face. It was machined on my PM-12x36t that has 0 spindle run out and only has about 10 hr use. Got it last June 2018. I can see the nose on the chuck with out collet wobbling. I measured it with my .0005 Sterrett DTI and it has .025+ tir inside the tapper. It almost looks like the back surface is not perfectly perpendicular to the bore of chuck. Any ideas how to get it running true. I thought about clamping a 1” ground drill rod in my set true 3 jaw with less than .0002 run out on a 1” mill. Then turn the mating surface on the back of the chuck, but not real sure about the collet, it is Shars pression collet. I was woundering if it can be sent back and referbished? It is an older used chuck. Perhapes it would be better to...

Preferred spotting for drilled holes?

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I run a smaller CNC and would like to preset a single tool to handle most or all of my spotting work. When doing general drilling I have always used a small center drill, but need to run high RPM's and find it doesn't clear chips well. I see NC spotting drills for sale in angles ranging from 90 degrees to 150 degrees. What would you recommend for a general purpose spot drill?

Inexpensive TTS alternative or R8 quick change tooling

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I have been using the Tormach TTS family of tooling for many years now to preset my tool lengths off of the machine and allow for quick tool changes. With my recent addition of a pneumatic drawbar, this will be even more helpful. The issue is that Tormach's pricing on the genuine TTS tooling system has gotten a little crazy. Last time I checked, they wanted $32 for a setscrew endmill holder and $50 for an ER20 collet chuck. I have found a Chinese supplier who ships from US stock. I spoke with Mike Li at IGStool.com (sales@igstool.com) and his current offering for TTS compatible tool holders (ordered directly from him) is: ER20 with TTS compatible ATC groove 1.38" long 3/4" shank, $17 USD Set Screw endmill holders with TTS compatible ATC groove (1/8, 1/4, 3/8, and 1/2"), $18 USD FMB22 Face mill holder with TTS compatible ATC groove (looks like a common size for cheap import facemills, 22mm bore), $19 USD In addition, the related ebay page offers non-ATC geometry collet chucks...

Easson 12B DRO lathe install with glass and SRA M-DRO magnetic scales

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Just completed a Easson 12B DRO install on my ERL-1340, I opted for the stock glass scales for the X and Z0 axis for cost reasons, but wanted to use the 3rd input on the Easson 12B DRO head. When I previously looked into the use of magnetic scales a few years ago with the Easson DRO's I was told that they may not be compatible (at least the those from DRO Pros). At the time I went with the EL700 on my mill with 4 axis magnetic scales. On my lathe, I did not need all the features of the EL700 and the Easson 12B is about 1/3rd the price. The stock glass scales are 1 micron slim line scale for the X axis and a 5 micron glass scale for the Z0 axis. The installs were pretty straight forward on the ERL-1340, I almost never use any of the stock brackets that come with these DRO's. Cross slide was straight forward, I use some small spacer washers to set the standoff heights. Since the reader is directly mounted the holes needed to be spot on. I may at some point add some spacers to...

[Metrology] Where to find in Machinerys handbook?

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Can anyone tell me where to find dimensions for collets in the Machinery’s Handbook? I can’t find anything in the index. My copy is from 1979. With all of the other information in it I can’t imagine collet dimensions aren’t.

Possible Grizzly DF-1237G Restoration, Oil Seals?

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In the late 1990s, I bought a then-used Grizzly DF-1237G (apparently the same as a G1003) 12 x 37 lathe. It's served me well, but now a few things have evolved such that I'm considering rebuilding it - if I can find the parts - or selling it and moving on. The main problem is that the gearbox oil seals have always leaked, dumping the entire gearbox contents into the stand over a period of just a few weeks. The worry is accelerated bearing due to insufficient oil around the head bearings. Unfortunately, Grizzly no longer stocks the oil seals. I know bearing part numbers are universal and can be cross-sourced, but I don't think that applies to oil seals. Has anyone found compatible oil seals for this lathe?

Planning PM-30MV Conversion

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I just received a new PM-30MV mill for a CNC conversion. There are a few things I haven't seen talked about very much in the forums. 1) How do you disable the quill? Do you remove the course and fine gears and all the other quill components? How do you lock the quill from moving? 2) Why don't CNC controllers use the DRO installed on mills? 3) Does it matter which side of the X-axis the stepper is installed on? It seems that most people mount it on the left side. Thanks for any insight into these burning questions. Mark

Involute Gear Pitch for ACME Thread

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I'm trying to figure out which involute gear pitch works with 8 and 10 TPI ACME thread? By "work" I mean for low pressure application similar to a lathe thread dial or other low torque application.

Approximate Cycle Time differences by material

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I'm considering a major process change in the business that would require switching from cold/hot rolled raw material to 300 series material. Yes, the cost in material is considerably higher, but there are cost reductions further down the line that may offset the material cost - hence the need to estimate costs and see if it makes sense to go in this direction. My general question is: what would be a good estimate for the following factors: Difference in cycle time (inc/dec) by % switching from mild steels to stainless? Difference in tooling cost (inc/dec) by % switching from mild steels to stainless? Other factors to consider? Like all things, I'm looking for educated guesses based on experience and/or facts on the ground from people that can speak to this. With that said, I'm not looking for precise answers just general ranges. If somebody said expect a 10-30% increase in cycle time...that is good enough for me to use - don't need to hit a bulls-eye in order to put some...

Pattern making to repair a broken cast iron machine base

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Here is a Keith Rucker video showing him making a pattern for casting to repair a broken cast iron machine base. It all looks good to me, but I am mostly clueless on this interesting subject. Still, I am looking forward to the follow up videos...

Barrel Stub Gauge

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I'm just starting a stub job converting a 12 ga H&R to a 458 smokeless Muzzle loader. I needed to mount the chamber end of the barrel in a chambering fixture and machine it to exact length.(3.0") Then I would need to bore it out leaving a shoulder .560" from the end buried in the chambering fixture. Th last step would be to singlepoint a 1 x 16 thread to the shoulder to accept the barrel stub. My problem is to do this in one setup. A made a simple gauge that will allow me measure both the length of the tube and the location of the shoulder with limited access to only one end. There's probably a Roger Ramjet official tool that already does this but I don't know what it is.

Do you use the Kurt DX6 Vise chip shield?

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I have found the sharp, thin, sheet metal piece that slides in the back of the Kurt vise to be difficult to use. It does keep the chips out of the screw but you really have to keep an eye on it. It wants to hit the main casting as I move X inward. It's sharp too!! Ask me how I know. Take it off?

Need Welding Help for Stainless/dissimilar metals to unknown

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Hi, We have broken exhaust manifold studs in a cast iron block. The break is flush. The idea is to place a low carbon nut and fill the void with a weld pool that will stick to the broken stainless/alloy stud. It is non ferrous but seems lighter than normal. The question, I am thinking either TIG with ER309LS or a Arcaloy or equivalent. 309/l16 arc weld. I have a Miller 220 AC/DC so I can do either. Any experience out there with a 2014 Ford 6.7 diesel exhaust manifold stud project? Thanks, Jeff

Mill Table Drain Cover

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Here we have a few extras for when I made my drain cover for the table on my mill. Mine finished out at about 2 1/2" square & is file fit to also cover the drain exit. PM me if you want 1 @ $10 shipped. Fun project! PM if interested. I also included a fine mesh inner cover & a sponge in my final design. This is only for the outer cover - which is typical of new from the manufacturers of the day with the added drain protection being much more than stock. This design is for my Van Norman 24MLA with a 50" table. I see no reason why it couldn't be adapted to other makes & models.

Harbor Freight 1,320 Electric Hoist in the Rafters?

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Question for you construction/framers out there, or if you have hands on experience. Is it reasonable to spread out the 1,320# load over say, 4 rafters to support the hoist and the load? I am thinking of a roller strut design with u-bolts wrapped around the rafters to support this hoist https://www.ebay.com/itm/1320Lbs-Mini-Electric-Wire-Hoist-Remote-Control-Garage-Auto-Shop-Overhead-Lift/172364496786?epid=2155023693&hash=item2821b97f92:g:YaoAAOSwWWxY~zG0:sc:FedExHomeDelivery!95926!US!-1:rk:7:pf:0 Have you done it? Did you lift a 1,000lb load safely? Is this a stupid idea? What about 500lbs? Thank you. It sure looks like a great way to lift heavy objects on to the lathe (12" chuck) or welding table or.......

Lathe broaching a keyslot

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Using Mr Pete's you tube video on this: I happen to have a blank of both what I call tool steel or, I can use the other end of an HSS parting tool. I tried it with a blank 3/32" HSS bit but it had WAY too much flex as it was pressed into the piece. And still not wide enough to make a 5mm keyslot. I want to use the tool steel blank to make the cutter as it should have a lot more rigidity than the HSS. The tool steel is super hard to my mind. (Dont laugh.... ) I ground down an old Armstrong knurling tool clamping tang so it would fit into my Enco stock toolholder. It took FOREVER!!! But it also allowed me to creep up on the final grind dimensions. That old knurler looks pretty cool now too. It also seems to me that this stuff is super rigid. This is why I want to use this blank instead of the HSS one but, I have no idea if this will work for the cutter as I have never heard of this being done. Can I use the Tool steel or should I stick with HSS for making the cutter?

First Project - Upshur's Model Farm Engine

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I am a retired software engineer and back a year ago I got the itch to learn how to precisely cut metal. You know, build something that I could actually touch and see. Around mid June I got delivery of my PM-1030V lathe with DRO and a bunch of tooling. This was followed in mid December of the arrival of a PM-727V mill, also with DRO, and more tooling. After dickering with setup, alignment and a making simple tooling, I realized I needed a “project’ to focus the effort. Started with a clock. A simple clock using Steven Conover’s Book “Making An American Clock”. Quickly realized the precision required on small parts was outside my skill set. Thought about a cast kit of a steam engine, but decided on the Upshur Model Farm Engine using Mr. H. Upshur’s drawings. The enticement was that all parts, except screws, were to be make from bar and sheet stock. So, in mid November, I started the effort. Well, I am here to show the results to date (it’s not done and won’t be till the workshop...

Power X Feed Install binding, PM brand

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I bought the Precision Mathews Power X Drive for my Sharp LMV full size knee mill. I was told all power feeds are pretty much the same. I had to make it fit over the Servo brand it replaced. First time I used a lathe to cut tool steel. The needle bearing race from the old power feed fit the shaft but was too large (od) for the bearing on the PM. Had to jig up an arbor to hold the bushing while I reduced the od to size. Anyway I installed everything and it works but I need to cut down the brass gear a bit, it’s too long. I also need to shim something, haven’t figured out what yet. The handcrank binds if I tighten the locking ring for the .001”-100” measurement. The kit came with a bunch of shins. If you know what to shim, please chime in. I’ll spend some time on the net or YouTube to figure it out. I’ll get it. Works good.

A "what's it worth" question.

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20's and blowing a gale, so sitting in the house surfing Ewe Toob. Saw a video where a guy modified a Horror Fright motorcycle lift with a "power pack" type hydraulic setup. That reminded me that I had one squirreled away that I took in on a horse trade. It's an Enerpac P39 hand pump with a RCH-202 or 302 (not sure, label missing) cylinder. That's a short stroke (2 or 2.5 inches depending) 24 or 36 ton cylinder. So, using Fee Bay to try to determine an approximate value, I'm seeing the pump go for $100-ish, RCH-202 cylinders go for over $400 and sets with pump and cylinder going North of $1000. This is NOT something I ever expect to use (I have other options) and am considering selling it. However, I'm aware that there's often a considerable difference between the asking price and the actual sale price of things on EBay. I'd appreciate opinions/estimates of what it's worth if I should decide to sell it. (Mods: if this violates policy, please delete it)

Phase Perfect - Conversion single phase to 3 phase.

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Threads about addressing conversion from single phase to 3 phase come up frequently. Often one aspect of inquiry is how to make 3 phase machines work with as little spend as possible - people have come up with some great solutions. I got into this hobby 35 years ago, and started out with a commercially made, 5 hp rotary converter. The RPC worked great for that first lathe, and made it easy to power the next 8 machines that followed. In all, I think I have 13, 3 phase motors from very small up to 5 hp. The RPC worked well, the drawbacks were that it did not start the lathe well on the higher speed motor setting. With the 4J chuck on I'd get one start and the second start befor too long would trip the RPC thermals. Also, the particular unit was quite noisy (though I have seen others that are much quiter). I've wanted to play with a CNC machine and when an agreeable opportunity for an industrial machine came up, I took the plunge. This VMC has a 15 hp spindle motor and most of...

Index Plate ID Chart

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Just a chart to help ID those generic listings on the sale sites in hopes of finding what you need. If you have info on other makes & models, please share.

Solid State timer help

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I have a few of these timers that I would like to put to use. For the best of me I can not find any info on the net about them. Could someone give me a drawing like the one below my two images on how to wire this unit up. What I need is something like what I have labeled as my drawing. I just made that up so you could see what I need. Solid State Timer SSAC Part # EISS4D20 120VAC

Transmission/Engine Tear Down Bench Question

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As I sit here eating my lunch, I'm hoping someone will throw me a nugget of wisdom. The typical commercial tear down bench is too small. The table is angled slightly back and to the side so oil can drain into a receptacle through a hole in the back corner of the table. This table is 8 feet long and 30" deep. My question, what angle should I use? I was thinking one inch elevation on the front and left side, the fluids will drain back and to the right. I plan on making the top an adjustable part-not welded to the base. The sides and back will have a 2" welded lip. This project is in process, please no rock throwing :) Thanks. What an I having for lunch? blueberries, strawberries, apple, Greek yogurt and granola, my usual.

Radius ball turner

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I've been wanting to make a ball turner for quite some time. Well, this past week I finally got a "round 2 it"! My first tool holder attempt caused me to say some things, that I'm glad my son didn't hear... ...but I managed to get it right the second attempt! I first tried mounting the base to the location where the compound rest normally occupies, but soon learned that I would not have enough room, between the radius turner and the lathes center line.... On the right side of the pic, you can JUST make out the tip of the live center in the tailstock...so went back to the drawing board, and decided that I would remake the base, suited to mount on the cross slide... Well, I deffinately had more clearance now, but something else hit me like a ton of bricks. I had no means of moving it forward or backward, something I didn't even consider since it was originally going to be mounted on the compound. Also, I really disliked having to use the gib from the cross slide, it was just SO...

Material in DFW, Texas

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I will be in the Dallas Fort Worth area next week. Do you know of a place I can buy "drops" of material ? Aluminum, mild steel, cast-iron, hard plastic and stainless? Square, round, or flat stock anything that is less than 3 feet long or 4 inches thick would be considered. I'm trying to build up my stash of raw material but as you know shipping is a deal killer. So since I will be in the big city with time to kill I thought I’d try to load up on material while I’m there
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I needed a simple way to index my headstock for a chambering fixture I was building. I also wanted it out of the way so I could leave it in place and just use it when I needed it. Chain sprockets provided the answer. They're cheap and nearly any tooth count from 10 to 72 is available. I bought a 72 and a 50. They cover just about anything I would need .

Screwdriver machined handle [Radial milling on a lathe]

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Rescued this old screwdriver with a new handle. It was a good use of my radial milling attachment The handle is a (almost) exactly copy of old one.

Good stuff from the Cabin Fever Expo

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I picked up some good items for my shop at the Cabin Fever Expo in PA on Friday. I won a bid on a lot containing a Starrett level and a bunch of calipers (just in time too, my go-to caliper was on its last legs). The digital Mitutoyo will be a big upgrade. Got a nice surface plate - it was a bit grimy but cleaned up very nicely. Also picked up a nice surface gage to go with it. I also got a great deal on a Syntron vibratory feeder. By my calculations I got about $1200 worth of stuff for around $200. (Getting the surface plate in person saved me a lot on shipping!). The show was fun - especially watching what the larger tools went for at auction. Rick

Slotting Machine

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New machine

What is Your Go To Insert/Angle when Boring

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If you were going to grab an indexable boring bar, to bore into say, a 2" piece of 12L14 cold rolled steel, what insert and angle would come to mind? It has a 7/8 hole in the center already. (IN THE LATHE) Style? Shank size? (I have CXA) I mean there is only about 1,000 to choose from. I see plenty of zero to negative 5-degree lead angle bars/inserts. I have had good success boring with the brazed carbon inserts that I touched up when I had a diamond wheel on my tool room grinder. I am retooling and don't want to buy anything I won't use. Thanks.

BXA or CXA, Clausing Colchester 15 1971 Vintage

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Hello all, I am hoping someone who has this lathe can answer my question. I just bought it and I need to add some tool holders. Based on forum threads, it can go either way. QCTP holders were not around in 1971, so the manual is no good. Thank you. Jeff

Collet Blocks???

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Guys the net is full of collet blocks,just starting out and I need this for one of my future projects.Looking at the 5C cause watching Youtubes saying that the 5C has more holding power for little longer pieces.But as I search either on ebay or All Indust. they all look the same but which ones is more accurate than the other?Say I'm using the square holder as you rotate it to machine a part if its not spot on well neither will your part.Na not making nothing for Nasa but for 50.00 or so I would like it to be the best it can be.What vendor would you purchase your blocks from that are good?

Offset boring through rectangular blank

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Hi All I need to bore a 1.5 inch hole through a thick hunk of 6061 on an Enco 9x20. Stock 4 jaw chuck. How much slop should be on the faceplate bolts? I have it as close to zero by feel without binding as I can. Do these need to be tightened and when during setup? But if you get them too tight the adjusters wont work right. My first attempt made a beautiful hole but the stock shifted. I think I caught that before it was too late to save the piece. I was just having too much fun in the moment. lol The sides of the hole are square to the top at least. I have attached some photos of first setup for critique. Its also sat like that for the last 3 years. I need to make some progress. lol The first 2 you can see the scrape marks from the jaws when it shifted. There is a circle scribed on top where the hole is supposed to be. Luckily, the hole isn't outside of that. Sooo, what went wrong here?
Drive on car ramps, any experience, making them, using them?
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i'm in the middle of repairing an old small 4x4, i'm doing lot of the work on jack stands but i've come to a point where i need a wheel to roll on and off so i can check articulation and clarence, i've looked around to buy plastic ramps but only one store has them and they are only 10 centimeters high, i've searched google and found only this drawing, looks easy enough to fabricate but i'm concerned about stability side to side, i also want to use the same ramps on my cars for oil changes so i can't make them very high, i'm thinking 20 - 25 centimeters high and 25 centimeters wide, any advice or shared experience is much appreciated.

Making a lathe chuck back plate, first timer

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My Atlas TH42 has it's original 4 jaw chuck. It has "Atlas" stamped right in the face. It's a good old soldier and it works, but it's sloppy and takes a fair amount of fiddling to get it dialed in. On the plus side, I've gotten pretty proficient/quick at mounting stock in a 4 jaw chuck! The key slots in the body seem worn/sloppy, which makes tightening and adjusting an extra hassle. The jaws will often not have a square grip on the work piece either. To the point where you can look in to the jaws and actually see they don't have full contact along their length on the work piece. I suppose I could try "refreshing" the old chuck, but I'm pretty sure it's close to the end of it's useful life with the way the jaws move inside the chuck body slots. Again, they're not completely horrible, but you can feel the slop when you grab them and I can't see how I would be able to compensate for material that has been worn away over the last 60-70 years of use. I've got a "new" 4 jaw chuck...
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