- Joined
- Dec 21, 2018
- Messages
- 2,180
Are you threading away from the chuck?
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Thoughts on a spider
- Thread starter Tincamp67
- Start date
Yes ,
But I forgot to reverse the motor. I was not fast enough. The motor does not stop instantly either.
Slowest speed is 160 rpm . I might make a hand crank for threading
- Joined
- Dec 18, 2019
- Messages
- 7,547
My 10x22 lathe minimum speed is 100 RPM. It's hard to time the coarser threads, they move so fast! If I'm positioning the tool, especially for metric, I turn the lathe by hand. Especially handy for the situation you are in, with a thread gutter and threading outwards.
Project for the winter spindle bore crank
Will work until I need material through the bore
- Joined
- Dec 18, 2019
- Messages
- 7,547
I made a spindle bore crank for my mini-lathe. I used it for threading for a while. I rarely use it these days, especially after learning reverse threading. Never made a spindle bore crank for my 10x22 as I feel like I'd use it only a couple times. However, I learned a lot making the crank, so I do recommend doing it.
I was threading away from the chuck.
I was reversing the motor to run tool back to thread relief . I failed to reverse the motor again to move away from the chuck It did not take but a second foe the tool to crash into the shoulder , ugh
Just enough to shred a few teeth of the change gears
Over the summer I was able to use a lathe with threading dial Smaller engine lathe and that was so much easier .
Had the carrige wheel on the apron which was very nice , mine is way down at the end of the lead screw.
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- Joined
- Dec 18, 2019
- Messages
- 7,547
Been there, crashed my mini-lathe once. Bent some gear shafts. After I got replacement parts I tried to press in an 8mm pin and broke my vise. Expensive lesson. Found a machine shop to press the pin since I didn't have an arbor press at the time. As I recall he did it practically gratis for me. Had a cool tour of his shop.
What are you doing about the gear? Post some pictures with key dimensions and I can design one that you can get printed. I'm away from home, or I'd print it. Should work well enough for you to get your task done.
Ulma Doctor here on HMF has offered some services.
I feel like there is a little market for these
Or even a conversion to a single key way design
- Joined
- Sep 22, 2015
- Messages
- 4
If you are doing a touchy thread that is fairly short or the confines of your lathe set up are tight, make a hand crank that you insert in the back of the bore and crank the threads by hand. It works fairly well for small stuff. Model engineering it is well suited.