Ferett,
You can make a tapping block to use for hand tapping. You need a block of steel or aluminum, say 19-25mm x 38-50mm x 75-100mm.
Measure the body diameter of your tap. Drill a slightly larger hole near one corner of the block. Lube up the ole tap, insert into hole,
hole part against block aligning the tap and part hole. (I stand the block on end (long ways holding the part against the block with my free hand.) Twist tap and make threads.
One other thing drill the hole to be tapped oversize. Titanium tends to swell when tapped and if the 1.6mm hole closes up it will be smaller than the root diameter of your tap and SNAP GOES THE WEASEL. To prove it to yourself, try putting a 1.6mm drill back thru a hole that you sucessfully tapped. The hole will be smaller than what you drilled. I don't have a good metric chart on hand now, but 1.6mm is equivalent to our 1/16"(.0625"). I would recommend a no. 51 drill (.067") for the tap drill. If you like I can provide a drawing of the block if my discription was not clear. Just say so.
btw the liner isn't junked. Make a punch out of 1/8"(.125)or so round rod. On the bench grinder or belt sander grind a fine point on one end of the rod. (Careful not to get it too hot,when it starts changing colors it's too hot.) Flaten the end of the punch slightly. Set the liner on the tapping block with the protruding tap tip over the hole you drilled for the tap body(broken part of the tap down), align the flat of the punch and the tip of the tap, hold firmly and strike the punch sharply with your trusty hammer and drive the tap out. Drill out with the oversize tap drill, retap. Hope this helps out. LarryD
[This message has been edited by dson (edited 05-13-2001).]
