On 14 Feb, 21:55, "Mark Z." wrote:

Specifically, I want to apply 30 degree and 45 degree chamfers to the
inner circumference of holes I have drilled in wood pieces.

Get one of these
http://www.axminster.co.uk/product.a...file=1&jump=12
One of my half-dozen most-used handtools.

Yes, they're expensive.
Yes, you do need a Halls brand one at that price, and with that
quality.
OK, so you don't _need_ a Halls. But it's worth it and it does work
and last far better than a cheapie.


I much prefer the 25mm diameter 90° one. I can't think why they've
stopped selling it in this size?