RST Engineering wrote:
Depends entirely on what tolerance you are marking/cutting/bending to. I
want my students to be able to cut/bend to ten thousandths accurately and
the only way to do that is to scribe. THen again, we are only building
electronic chassis out of aruminum (5052H32) and we don't worry much about
it cracking under vibration.

When I build small airplane parts and have to hold that sort of tolerance,
I'll lay on a thin coat of machinist's bluing and SCRIBE very carefully so
that I only cut the paint and not the aluminum itself.

************************************************* ******************88
Keep your cotton picking hands / scribe OFF any aeroplane!!!

Stick to Non aviation L'etronics....

If you bought a chassis from budd, you would be ****ed if they
cracked..

Reggie