-
Welcome back Guest! Did you know you can mentor other members here at H-M? If not, please check out our Relaunch of Hobby Machinist Mentoring Program!
2014 POTD Thread Archive
- Thread starter Smudgemo
- Start date
- Joined
- Feb 7, 2012
- Messages
- 539
That's a very similar set up to what I did with my press. I never had an issue pressing pins in any AK's, PSL's, or FAL's - is it possible you weren't exactly in line [perpendicular] to the pin? Drill rod is pretty hard IIRC. Or........ could be Suomi pins are really tight. :thinking:
- - - Updated - - -
Finished up putting a bracket on to hold the readout modules for the Igaging DRO I put on a small RF31. I have noticed the accuracy is not the greatest, but if I go slow it's not too bad for my hobby work.....I won't bore you with details as this has been covered a few times already. Just the finished look for my set-up.
- Joined
- Nov 2, 2012
- Messages
- 415
I got tired of the vise handle that came with it, so I made a quickie handle from a socket, and old bolt head, some drill rod and some 1" stock I had on hand. Nothing fancy and not quite finished, but it's close. Now I won't have to avoid the knee when opening or closing it.
- Joined
- Dec 17, 2012
- Messages
- 745
A neighbor had to fix a curtain support, making a sort of mortise into a piece of pipe.
The support was basically a pipe made with some mystery metal looking like heavily compressed aluminum dust.
At the first attempt to make a hole with a self-proclaimed HSS Chinese bit, 500 RPM and very light feeding, I got as a result just a notch and a bit 1 cm shorter.
A brand new Bosch HSS bit completed the hole, with the help of some cooking oil (all I had in that moment!), and even the Bosch bit became almost dull. Around the hole instead of chips there was a sort of crust, like slag, pretty hard to be filed.
Then I had to make two cuts with an HSS slitting saw 0.6 mm thick.
After a test I decided there was the need of something constantly dripping oil on the blade to get a decent result, so I filled an empty tube of cold pills with oil, attached to it an IV line (some time ago the drugstore had to dump a full box of them because they were expired, and I kept them to water the plant pots) running just near the chuck and I named it "coolant hose". Of course I removed the needle…
Here is the "IV drill press":
I used an M6 thread bar to push the vise under the saw, turning it at 1 RPM: an astounding advance speed of 1 mm/minute.
The mortise anyway is perfect, the saw blade is not yet dull and the neighbor is happy.
The support was basically a pipe made with some mystery metal looking like heavily compressed aluminum dust.
At the first attempt to make a hole with a self-proclaimed HSS Chinese bit, 500 RPM and very light feeding, I got as a result just a notch and a bit 1 cm shorter.
A brand new Bosch HSS bit completed the hole, with the help of some cooking oil (all I had in that moment!), and even the Bosch bit became almost dull. Around the hole instead of chips there was a sort of crust, like slag, pretty hard to be filed.
Then I had to make two cuts with an HSS slitting saw 0.6 mm thick.
After a test I decided there was the need of something constantly dripping oil on the blade to get a decent result, so I filled an empty tube of cold pills with oil, attached to it an IV line (some time ago the drugstore had to dump a full box of them because they were expired, and I kept them to water the plant pots) running just near the chuck and I named it "coolant hose". Of course I removed the needle…
Here is the "IV drill press":
I used an M6 thread bar to push the vise under the saw, turning it at 1 RPM: an astounding advance speed of 1 mm/minute.
The mortise anyway is perfect, the saw blade is not yet dull and the neighbor is happy.
- Joined
- Feb 8, 2014
- Messages
- 11,144
The continuing saga of the Z-axis conversion gearbox. I had to pull off of this project last week to fix a CNC router, and get the brass thingies done.
I finally have the gearbox completed.
Roughing out the outside profile
The final finishing pass
It fits !!!! :allgood: Looks like the gears mesh correctly and will disengage when the cam is rotated. Next is making sure everything does fit up correctly, and a little deburing on the case. I should be able to test run it on the bench in the next day or so. I have a little bit more work to do on the machine before I can go live, like getting the travel limits installed!!
A nice narrow profile
I think the Engage/Disengage cam shaft sticks out a bit too far, looks like I can shorten it up by about 1/2 inch or so.
Now it's time to clean house a bit, there is about 5 gallons of aluminum chips all over the place.
I finally have the gearbox completed.
Roughing out the outside profile
The final finishing pass
It fits !!!! :allgood: Looks like the gears mesh correctly and will disengage when the cam is rotated. Next is making sure everything does fit up correctly, and a little deburing on the case. I should be able to test run it on the bench in the next day or so. I have a little bit more work to do on the machine before I can go live, like getting the travel limits installed!!
A nice narrow profile
I think the Engage/Disengage cam shaft sticks out a bit too far, looks like I can shorten it up by about 1/2 inch or so.
Now it's time to clean house a bit, there is about 5 gallons of aluminum chips all over the place.
Last edited:
- Joined
- Oct 27, 2013
- Messages
- 124
Nice I.V. bottle support! I need something similar next to my evening chair, only it should use a bottle of Maker's Mark...
- Joined
- Apr 12, 2011
- Messages
- 3,472
You are so right, not everyone understands the concept of "hobby".
Took a couple of pieces I got from some members earlier this year and finally rebuilt a compound rest for my logan. Probley the best couple of days this year so far! Made a handle,resized a hole and counterbore, made some tee nuts out of grade 8 bolts, welded some threads onto the short lead screw, the slotted if for a 1/8 key. Just could not figure out the picture thing. Not done yet though, need a new tool post because none of the ones I have fit the new to me compound rest. So tomarrow I run for more steel at the recycle yard.