|
I just looked at what they want for a solid carbide drill bit now, a little pricey, you can sharpen up the tip of a good quality 3/16 masonry bit and that should get you through if it is only the surface that hardened, keep the drill sharp though even if you have to resharpen every 5 or 10 seconds, the heat from drilling can be work hardening the material in front of the drill bit.
__________________
87 930,
|