When I was in the auto wrecking business we used to have paint pens. They came in a small plastic bottles with a ball on the tip. It was easy to label parts as we took apart the cars. I did a couple of googles and could not find any.

The second thing I am looking for is a blue dye we used to use to temporarily dye metal to do adjustments on differentials and surfacing metal.

Does anyone know where I can get either of these items?
Thanks

 

One type of paint pen at amazon:


or




I think the marking dye you're looking for is dykem:

 

Normally known as engineers blue - try an engineering suppliers

 

Prussian Blue:

http://www.zorotools.com/g/00029027/...FQ-Chwod9GY1nA

I think I bought mine at a local autoparts store.

 

speedy diagraph msp 2018-p heauy duty paint marker they are the best out there. us company

 

Very nice listings. How about conductive pens?

 

I picked up a conductive pen at Radio Shack.

 

I think this is what you want for blue dye. We use Dykem .

 

They have nice paint pens at crafts stores like the Michaels chain, but for marking parts I looked around and bought some grease pencils, or china markers, one white and one black. They also make paint pens for tire marking.

 

There are two very different blue marking materials for metals. (Other colors are available, but blue is most common for both types.)

One is like a thin blue lacquer that is brushed or sprayed on metal so you can then make (and see) a thin scribe line.
The other is a soft blue paste that is used to check for contact and clearance, such as setting up a differential.

Dykem is the one of the best known brand names, and they make both types. Grainger is one common source.