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Hand Cranked Lathe Build Log

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Hand Cranked Lathe Build Log

Unread postAuthor: Gun Freak » Wed Apr 21, 2010 7:19 pm

UPDATE Plan for cutting mech added at bottom
UPDATE Added crank and "chuck" to lathe, pics at bottom, and video


Ok so I decided to make a little hand powered lathe for things like o-ring grooves and trimming little fittings and things like that. I don't want to spend a lot of money on it but I want it to work. I think this will do the job. It will cut by a spring-loaded arm with a blade on it that can slide up and down a track and lock in position to make o-ring grooves. Here is the beginning of it, just the wooden body for now.

Ignore the dates... they're really messed up :P

Image
Image
Back view showing the hole in which the crank shaft will go.
Image
Back view
Image
Hand crank made of pvc.
Image
Cutting mechanism
Image
Front (with "chuck")
Image
Crank
Image
Top view with bar

Video
[youtube]http://www.youtube.com/watch?v=hpmyjG4mf-A[/youtube]
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Last edited by Gun Freak on Thu Apr 22, 2010 2:11 pm, edited 4 times in total.
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Unread postAuthor: clemsonguy1125 » Wed Apr 21, 2010 7:23 pm

Looks good, my suggestion is that on the crank handle ad another slightly larger piece of pvc so the it wont rub your hand, the handle will turn in the pipe, i did that with my crank gatling gun and it worked great
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Unread postAuthor: Gun Freak » Wed Apr 21, 2010 7:26 pm

Oh yeah thats a good idea, maybe some thin walled one inch or regular 1.25 will work for that, thanks. I was thinking about that. I need to go to Ace to get some aluminum or some sort or nipple to go through the hole to be the crank shaft because I dont want to drill it out any more for any pvc because there isn't any wood left around it.

Edit: What gatling gun?!
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Unread postAuthor: clemsonguy1125 » Wed Apr 21, 2010 7:29 pm

Its powered by rubber bands and only shoots about 10 yards so I never bothered posting it, It was a early prototype
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Unread postAuthor: Gun Freak » Wed Apr 21, 2010 7:31 pm

Oh ok.
Have you seen the rubber band gatling gun on YouTube? You should check it out... :P
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Unread postAuthor: clemsonguy1125 » Wed Apr 21, 2010 7:35 pm

mine shots mini darts or q-tips, what does it shoot, rubber bands, ok and back to lathes, dont want to hijack your topic
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Unread postAuthor: Gun Freak » Thu Apr 22, 2010 2:11 pm

Bump for update.
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Unread postAuthor: clemsonguy1125 » Thu Apr 22, 2010 2:29 pm

I think a hacksaw blade would work better than a knife
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Unread postAuthor: Gun Freak » Thu Apr 22, 2010 2:37 pm

I'm gonna use a single edged razor blade or something
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Unread postAuthor: clemsonguy1125 » Thu Apr 22, 2010 2:44 pm

Well for cutting pvc, a hack saw blade will be quickest and for wood pistons too
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Unread postAuthor: Gun Freak » Thu Apr 22, 2010 2:46 pm

I might try it
-message too short-
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Unread postAuthor: Demon » Thu Apr 22, 2010 3:10 pm

Good luck if you actually plan to machine anthing other then wax with that ...
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Unread postAuthor: Gun Freak » Thu Apr 22, 2010 6:44 pm

It should be able to cut o-ring grooves in pvc.
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Unread postAuthor: skyjive » Thu Apr 22, 2010 7:04 pm

Funny, I had a similar thought a while back :)

http://www.spudfiles.com/forums/homemade-lathe-mk-2-with-video-t19163.html

Which worked pretty well but I ended up doing this:

http://www.micromark.com/MICROLUX-7X14-MINI-LATHE,8176.html


But good luck, building one's own tools is very rewarding.
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Unread postAuthor: Gun Freak » Thu Apr 22, 2010 7:07 pm

Yes, I've seen your lathe. Pretty cool.
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