[TheForge] Hot cut

[Dave]

You're right.  I was thinking (i.e. mis-remembering) in the wrong 
plane.  But the premise remains the same, right?  Sharper edges for hot 
work, blunter edges for cold work.  Or have I mis-remembered this too?  <grin>

Dave

At 05:43 PM 2/26/03, you wrote:
>Sorry dude, I think your logic is correct, but the math is wrong.  I found 
>the reference I was
>looking for in "Practical Blacksmithing and Metalworking" (second edition) 
>and it is 60 degree
>for the cold cut and 30 for the hot - but this clearly isn't written in 
>stone - I have some hot cuts
>that taper very finely and resemble knives more than chisels..
>
>On 26 Feb 2003 at 9:21, Dave wrote <snip-snip>
>
> > I believe it's the opposite ... 60d for hot cut, 30d for cold
> > chisel.  Reason being that the sharper angle would dull too quickly in 
> cold
> > steel, while it would pass through the softer hot steel much easier.