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[ed_h]

Yes--copper contamination. Don't let the copper go into the bath, or use nickel wire.

The initial electrolytic step "charges"...

[ed_h]

I'll bet It was worse then. We essentially have only two widely accepted systems. They probably had many local ones.

Ed...

[ed_h]

You cant really ground an insulator, but you can sometimes treat its surface to reduce the tendency to take a charge. There are antistatic sprays, or...

[ed_h]

You probably mean "grads" or "gradians", which are 1/400 of a circle.

There are 2π radians in a circle.

...

[ed_h]

I live in Omaha, Nebraska. A while back, the topic of conversation on a local radio call-in talk show was the metric system, and whether the US should...

[ed_h]

PlastiDip shrinks a lot in thick sections.

Ed

[ed_h]

I bought some paint thinner a while back. The brand was Klean-Strip, and the jug looked the same as I was used to. When I got it home and opened it,...

[ed_h]

I had to remove paint from some plastic parts recently, but couldnt use my stash of methylene chloride stripper becaue it attacked the plastic. Wimpy...

[ed_h]

Black Oxide and mill scale are both oxide coatings, one from heat, the other from chemical action. Phosphoric or dilute muriatic acid will remove either...

[ed_h]

If you switch the scope input to AC coupled, the DC component wont show up..

Ed...

[ed_h]

Before I installed my pneumatic power draw bar, I had to whack the drawbar with a mallet after loosening it. But now with the impact tool doing the loosening,...