Working up a jig for Contender mounts... again...

[Elric]

http://ps-2.kev009.com/ohlandl/Cast_Bullet/TC_Schuetzen/Contender_Schuetzen.html

I have a bit of time on my hands... Tried to figure out a decent mounting block for the SB16 shaft end support, in the end, I found a chunk of flat stock steel, 1 3/4 high, 2 wide, and 3 1/4 wide. Tried to figure out how to mount the support on the block, while allowing access to the bolts that fasten it to the T-Nuts...

Unfortunately, the SB16 base is 3 1/4 wide, which covers the top of the T-Nut bolts, so a straight drill, top down, is out. The spacing of the SB16 mounting screws is 2 1/2, which just don't line up....

If the flat stock is a bit low, a good pair of scissors and a pop can will fix that. I need to get close to 1.758, so this is not nuck-lear rokkit science...

 

[Ben]

I'll plead guilty to being pretty dumb.

Can you tell us in simple language what you're making ? ?

 

[Elric]

A jig for working on Contender sight mounts and forearms. That indexer has a chunk of 13/16 round stock (same dia as Contender barrels). Stick the SB16 on, tighten the collet, pull the locking pin out to free up the indexer, rotate the indexer so the SB16 and block hit the table and the correct height is instantly set. Loosen the collet, release the index head locking pin. Insert the pin into the shaft through the clamping slot on the SB16. The stock is at zero degrees, tighten the collet back up.

Drill n tap for the four Contender sight base screws. Then I can slap a chunk of steel on it and machine it. I can rotate it 90 and 180 degrees in order to work on making a sight base or a palm rest attachment for the forearm.

It is all in the angular relationships. One indiated in, I locate a screw hole, and everything is then a known distance.

Ordered the chunk o steel. Some might quibble about a bandsaw, but if I can get a chunk already near finished dimensions, that is worth my time.

 

[Ben]

OK thanks.

Ben