2019 POTD Thread Archive

here is the controller put it in a project boxView attachment 284344

very neat! Any details/ source on the controller? I've been musing about doing something similar but finding a decent controller is tricky. Is that a 2 speed drill motor? Also, do you get any twist from using only 2 threaded rods (or is there a 3rd behind the motor)?
 
I installed a couple of inexpensive DROs on my 9x20. I can get them to register .0005" of movement even though the rated accuracy is .001" - which may actually be true but I didn't expect that they would increment in .0005". Not too bad for $60.

View attachment 262565
The native resolution of the capacitive scales is 10 micron (.01mm or ~ .0004"). There will be a rounding error in the conversion to inches when resolving to .0005". The error is negligible when resolving to to .001". You can avoid a conversion error by working in mm.
 
Almost all digital measuring devices will show 1 more place of resolution that they will commit to in specs. The ones that don't are probably just suppressing it. I think this is an artifact of converting from Binary to base 10 and also may not be repeatable at the least significant digit display. in other words, just because it is displayed does not mean it is accurate to that level.
 
Two simple projects to make life a little easier...

I replaced the chinesium hand levers on my little single lip grinder with stainless ones from Kipp Germany. Much better!

Next, I turned a new bushing so I could use a soldering stand with my baby 12w iron. Had a block of mystery plastic, now I have a good place to rest my pencil iron.
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very neat! Any details/ source on the controller? I've been musing about doing something similar but finding a decent controller is tricky. Is that a 2 speed drill motor? Also, do you get any twist from using only 2 threaded rods (or is there a 3rd behind the motor)?
here is the controller I ordered, just took a chance on the quality seems to be working well.
https://www.amazon.com/gp/product/B071ZKGMGN/ref=ppx_yo_dt_b_asin_title_o03__o00_s00?ie=UTF8&psc=1
yes that was a two speed motor I figured it would have better torque in the lower speed so I keep it there. I only used 2 rods the motor doesn't twist at all. I actually considered 4 rods one on each corner but after trying it with 2 I decided there was no need. I forgot to mention that I put set screws on the top and bottom of the plates to make sure it didn't twist in the bracket.
 
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cool, thanks! If you want to add a Rapid function (full speed momentarily) to move the table in to position, you can use a momentary switch wired between the center wire of the pot (wiper wire) and the high range wire (if high resistance = high speed). Then when you press the button you essentially "short" the pot and the motor will run at full speed. It's what I'd do if I built one as I use that function a fair bit on my X-axis power feed.
 
Last couple of days i've been doing lots of odd jobs in my machine shop and on the Little 4X4 and shoveling snow, we got a record amount of snow and cold. On the Little Niva i've done some more body work, on the wheels arch and on the trunk lid, because of the dashboard eating more then half of the new body filler i bought now i'm scraping the bottom of the can, that said, this little russian car is much easier to apply body filler then on french and german cars, there is no flex in the sheet metal. I did most of the work in the big garage around the warmest time of the day and continue working in the afternoon in my machine shop, because is smaller and there is heating, one of the odd things i did is to make a plug and drill ( take some) material out so i can use my lathe as a shaper to make a key way, and my cheap drill press dissipated again, can you see how crooked the hole come out, the table is set straight and that is a new sharp drill bit. Then i moved on to making some wheel nuts, the little niva needs couple but even that did not turn right, the 19mm key stock was defective, i was surprised at first when i broke a new high quality insert on just facing it, but did not see the crack, i made one complete nut without problems but for the second i heard it catch and when i looked it has peeled back, i looked at the other 19 mm stock and all of it had the same crack, i'll need to take it back to the steel place, i'll also need to work on the heater i started on for the big garage, this weather is not letting up.
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finished a major job this week - adding new lights and a fan to the kitchen, partly because I wanted a more mellow set of lights than the 4x4ft LED tubes in the overhead recess and partly because I found it really annoying having to walk around to the other side of the kitchen in the dark to turn the lights on.

I didn't actually plan how long a light strip I needed for the kitchen, so it turned out the 5m strip of 2700K high CRI (supposedly) wasn't enough. Got around that by cutting the strips into their 3 LED units and spacing them apart on the under counter lights (alu strip from a closet door rail, believe it or not). Was super tedious wiring them all together.
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light strips for the overhead light
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dimmers (one for under counter lights, one for overhead) and 2nd power supply. The first one lasted an hour as it was a 24W unit with a 60W sticker on it. That'll teach me.
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under counter strips with some diffuser plastic (bulk trash find) as a cover, mounted on stand offs made from a piece of small diameter metal pipe (possibly from a toilet roll holder)
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dim shot of the overhead light so you can see where the strips are
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bright shot, I like the light colour. You can also see the new fan that I installed. Running the wire for that was not fun and required machining some adapters so I could use my socket extensions to hole saw a hole in the side of the box between the light recess and fan hole.
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one side of the kitchen
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and the other
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and some lights under the island more for fun than anything. Makes a nice "don't walk into the dishwasher" light for the nights.
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now onto the next project, a new work bench
 
GoceKU, you do stuff that I could only think about doing. I am in awe.
 
You get more done in an hour than I do in a week.
awesome work and cant wait the see the car running.:aok:
 
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