I have seen the videos of diamond fluting of a bolt on a mill, but was curious of a diamond pattern could be cut on a manual lathe? Basically, trying to think of how to make very coarse knurling, not the typical fine pattern from a knurling tool.
diamond pattern on lathe?
- Thread starter VA_XTC_Shooter
- Start date
Exactly! The hard part will be starting and stopping in exactly the same spot.
Paul
That's what I was thinking, juat wanted confirmation
You can double the advance of any lathe by swapping the main change gears. Ie make your 4tpi into a 2tpi with the same quick change setting
I’ve had to do it to get a certain face pattern on non gun stuff
Just don’t take big deep cuts as your doubling your stresses
Jonnyofalltrades
Silver $$ Contributor
I have done this a few times by putting in the gears that gave the fastest advance possible, then running a both right and left threads with a radius cutter.
I was able to get to something like 1.5 tpi.
Radius cutters needed lots of relief to be able to travel at that steep angle. Finishing the end of the cut smoothly is impossible. You will spend days at getting it to look decent.
I won't be doing it again.
I was able to get to something like 1.5 tpi.
Radius cutters needed lots of relief to be able to travel at that steep angle. Finishing the end of the cut smoothly is impossible. You will spend days at getting it to look decent.
I won't be doing it again.
The potential down side:
If your pattern is to aggressive it could be like running a saw blade or file on your brass if the rifle is a repeater.
butchlambert
Site $$ Sponsor
Send it to boltfluter!
LVLAaron
Gold $$ Contributor
Worth looking at if you have a mill.... PM has this kit now, so you can do fluting/spirals on a manual machine.
br1111
Silver $$ Contributor
i second that idea
I am not wanting to flute a bolt. I was just using the patter as an example of what I would like to do on a different piece.
AlNyhus
Silver $$ Contributor
Butch nailed it.
-Al
Toolbreaker
Gold $$ Contributor
If this is something that you're really interested in doing yourself, look into grease grooving on a lathe. An eccentric plate can be made to mount on the back of the leadscrew to act as a cam to drive a cutter. It's hard to describe, but I bet there are pictures out there somewhere.
Watching these dudes do this kind of stuff usually bare footed is amazing.
LVLAaron
Gold $$ Contributor
And with zero lubrication
Jonnyofalltrades
Silver $$ Contributor
Or PPE!And with zero lubrication
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