Cutting Screws

Holt

Holt

Joined
Mar 11, 2014
Messages
43
I find myself cutting a lot of small 2-56 titanium screws for folding knives. I have a threaded plate that the screws go through and then I grind the extra off on the belt sander. The problem is that the end of the screw is flat and they are a PIA to thread into a barrel. Do you guys know of an easy way to taper the ends so they thread in easier? Tossing them on the mill and chamfering seems like a really big PIA.

Thanks
Joe
 
Cup burr, in a pin vise. Just twist it a couple times. Find one that's slightly larger than the diameter. This is also the best way to chamfer pin heads for peening, which prevents splintering.
 
View attachment 817818 Can you get a cup burr that works on a screw being spun counterclockwise, or spins counterclockwise on a stationary screw? My concern is the jagged end of the cut thread snagging the cup burr and self destructing. My #2X56TPI bolt cutter does a fairly good job, but the very end of the cut thread is a snaggle tooth accident waiting to happen.
 
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My screw holder for sizing is two strips of titanium one with some bend in it that are held together near one end with a screw. At the other end on one of the strip that is flat is a screw hole the clearance size of the screw you want to shorten.I believe I have made three of these I use.
Frank
 
Frank, I use the one you gave me all the time. I believe this one was some of that half hard stainless you said you had given Roger for liner material.
I used 309 stainless for a copy of it in a larger size for myself, and it works very well.

I trim them on a contact wheel with a 240 or 400 belt, and they always start in the hole well without any deburring.
 
tiguy7 said:
View attachment 817818 Can you get a cup burr that works on a screw being spun counterclockwise, or spins counterclockwise on a stationary screw? My concern is the jagged end of the cut thread snagging the cup burr and self destructing. My #2X56TPI bolt cutter does a fairly good job, but the very end of the cut thread is a snaggle tooth accident waiting to happen.
Click to expand...


It won't hurt the bur if that's what you mean, they're hardened steel, like files. Yeah if you try to use a machine to spin the bur or something, and use too much pressure you could have an issue, but as I said, you simply press the cup onto the end of the screw or pin by hand, and turn it a few rotations. They're simple, and very effective. Keep them clean and dry, and they'll last a long time for this type of use.
 
Ochs Worx make a really useful ti screw cutter. Nothing but good reviews from what I've seen.
 
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