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cutting fiberglass stocks

mikecockcroft

Pine Valley Precision
Gold $$ Contributor
Whats the most common way to cut off the end of the butt on a new mcm fiberglass stock? I have two that need to be cut off square to mount pads on. I have cut several wood stocks on my table saw, with the right blade it should cut the fiberglass without splintering. I have a band saw also that I used when we made fiberglass laminated longbows here, but the fiberglass takes the set out of the teeth to quick. What do gunsmiths use?
Mike C
 
Preacher
Thanks

Think I will set up and make a pass at the end of the butt and see what happens, if it splinters out the stock will still be ling enough to try something else.
 
Carbide mill in the milling machine and turn up the rpm's to about 1000. Climb mill it, and it will turn out perfect. Done it that way many times.
 
We have cut several Robertson and Masterclass buttstocks in order to shorten them for HP shooting.

Used a larger radial arm saw with a carbide tipped blade. It actually made a better cut than the factory did. We were surprised at how good the results were.

Blade was probably 14-16 inches in diameter.

Bob
 
Whatever you use to make the cut with, make sure it's sharp. A new saw blade is cheaper than a messed up stock. Two tight wraps of masking tape can help reduce splintering. Don't force the stock into the blade.
 
I am going to cut one tomorrow, a HIGH TECH SPECIALTIES [Bansner].

I will use the power miter saw with 12' cabide tipped blade.

That is how I cut off wood stocks, so it should work on glass and epoxy too.

The hard part will be attaching a Limbsaver to the butt.
 
I used a 27 year old Makita power miter saw with carbide blade.

I put a wooden shim under the left side to get the stock horizontal.

I set the machine for 2.5 degrees less than a 90 degree cut.
 

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Depending on the stock composition. The fibre/metalcutting blades work well as well as the diamond wheels for concrete. Carbide is fine for 1 stock but it dulls quickly and has trouble with kevlar blends.
 
I have a fixture that hangs off the back of a vertical mill. I use a five flute carbide enmill buzzing around 3500 rpm and I climb mill around the circumference of the stock. It makes more chips, but the edges come out razor sharp.,literally, it'll slice you up if your not careful) What it won't do is turn the edges to junk from chip outs on the brittle gel coats.

Good luck.

C
 
My recoil pad guy uses a sanding disc on new stocks to square them up for pad installation. Lee
 

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