Why should you buy my Twisted Barrel Lathe Jig?
This jig will enable you as a gunsmith or machinist to make thread, crowns, chambers and whatever machining you do at a long distance from the chuck more efficient. Machining is made easier and more efficient and with less chatter and more steady when using a steady rest, will not damage products that you are machining if used properly.
The Twisted Barrel Lathe Jig will need to have the nylon tipped set screws replaced as they wear down. Replacement set screws can also be purchased at an extra charge.
Machining can be made with the center of part dialed in or with the outside of part dialed in. The idea of the jig is to machine barrels between center where you need more stability while machining away from the chuck. Another advantage of the Twisted Barrel Jig is machining barrels that are out of round, but still need to have the bore spin round and you don't run the risk of having to steady-rest on the barrel and having the rest leave a mark on the part.
$65.00 for price of jig - This includes 1 jig and 8 3/8-16 nylon tipped set screws.
Additional set screws can be purchased at a price.
Nylon tipped screws are as follows 3/8-16 .375 long $.45 a piece, 3/8-16 .500 long $.50 a piece and 3/8-16 1.00 long $.70 a piece.
How To Use
Place the Twisted Barrel Lathe Jig over the end of the part to be machined. Put one end in chuck jaws and other end on a live or dead center with the tail stock. Dial in the end of the part that was placed in the check end of the lathe. Loosely tighten the set screws on part to be machined. Use a dial indicator to dial in one side of lathe jig. After dialing in one side of jig, set indicator on other side of jog and dial that side in. It may be necessary to go from one side of jig to the other until both sides are reading zero. Now the jig is dialed into the center of part. Place the steady rest of the lathe jig, tighten the bottom screws first, then the top. Don't over tighten the steady rest, this will cause the lathe jig to stop spinning the barrel or part to be machined, but still shouldn't damage the part. Double check and make sure steady-rest didn't move lathe jig out of center. If the center is removed, only light machining is possible. If heavy machining is made, this could move the jig or make it spin on the part. Re-centering of jig can be done after steady rest has been set and after the center has been removed. it will be necessary to double check the nylon tip of the set screws to insure there is still nylon between the part and the set screw. The nylon set screw will need to be replaced periodically as the Twisted Barrel Lathe Jig is used and the nylon is flattened out.
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