Hehee, thanks... this is great advice, I appreciate. It looks like you both have suggested the 4" table saw. I also have the idea of building a small saw that uses a verticle band saw blade running down through an opening in a table. ThanksA shear works, but the blades are dulled quickly for other, demanding metal work. Some people use the miniature HF shear and report good results. Others report using a pointed carbide bit in a mill.
I used to use a hacksaw blade in a scroll saw and a belt or disk sander to get the final dimension. The hacksaw blade also dulls quickly. I got tired of the fine fiberglass dust.
Now I use a miniature table saw with a carbide blade (about 4" diameter). I cut most of the way through, leaving about 10 mil. Then, I simply snap off the thin flashing that is left. If you cut entirely through, you get chipping. I design my boards so I am not cutting both copper and FR4. I leave a narrow (5 mil or so) etched space between the copper ground pour and the edge.
John
by Aaron Carman
by Jake Hertz
by Jake Hertz
by Jake Hertz