"rangerssuck" wrote in message
...
On Monday, July 21, 2014 4:13:23 PM UTC-4, rangerssuck wrote:
I need to make (or have made) a custom router bit. The groove I need
to make is a truncated V 15/16" wide at the top, 3/8" wide at the
bottom and 1/4" deep. The dimensions aren't super critical, but
closer is better.

I do NOT have a real tool grinder, and HF seems to have discontinued
theirs. I also don't (as will become apparent) have more than a very
little bit of experience grinding tool bits. I DO have 1x30 and 4x36
belt sanders, a set of 5C collets and a square collet block.

I'm thinking that I could lay out the shape on a blank, hold it in
the collet block, set the fence on the sander to 41 1/2° (to form
the V angle), tilt its table to 20° or so (to form the cutting edge
and then grind to the line. Then grind the flat end and its cutting
edges.


Since the grooves are straight with open ends you might consider
making a molding plane, thus trading off an easier-to-make steel blade
for a little woodworking. Dull circular saw blades can be annealed,
cut up and rehardened.
http://www.hyperkitten.com/tools/art...ane_Basics.php

-jsw