Homebrew PCBs

On Wed, 1 Apr 2009 15:30:42 -0400, you wrote:

If you do get a metal shear, wait until the big one is on sale, if
that's what you want.

Overpriced otherwise.  Be wary, that sucker is very heavy, so you need
a good place to put it, a way to get it up there, and a good light.
You should also adjust the clearance between the blade and bed so it's
relatively tight.

Mine works ok for me (30 inch model, but I also do metalwork).

Harvey


>
>Today's project was to see if I could cut v-scoring with a table saw.
>I found an old steel plywood blade (no carbide to break off, lots of
>teeth) and reground it to a V point:
>
>* mount the blade backwards to avoid cutting your grinding wheels
>
>* run the saw
>
>* initial grind with an angle grinder
>
>* use a 30-60-90 triangle to position a ginding stone for final grind.
>
>GENTLE pressure is all that's needed, and very little actual grinding
>time.
>
>The result snapped cleanly and showed no signs of burning.  Obvious
>drawback is that plain steel will need sharpening more often, but it's
>better than trying to resharpen a router bit or scrollsaw blade.
>
>(yes, I know about metal shears, but I don't own one of those - yet)