Quote:
Originally Posted by Nailhead
It is indeed made in USA.
I checked out Precision Twist & Guhring: the PT's are available at Amazon, as are the hideously expensive Guhring's. Neither are inexpensive.
I located a carbide-tipped twist drill at buydrillbits.com, described as "super heavy duty, for hardened metals". It's the same price as the two you mentioned. What do you think?
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If you can remove the engine and get it under a drill press, then they will work great. You need constant even pressure. Any variation in direction ( like the hand held drill motor moving in the hole ) will break the edge or break the tip off.
Quote:
Originally Posted by Nailhead
You know what I think is really funny about this? These set screws are made of some sort of metal that is soft as a split shot when you put a hex key to it, but as soon as you have to drill it, it turns diamond hard. Pretty trick.
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Shame it wasn't the other way. Sounds like it wasn't heat treated correctly.