What is the best way to mask threads and holes?

[dagobert]

Green slime...

Caswells also sells a green plastic substance that you can paint on the part, plate, and then remove with laquer thinner. I just finished plating some motorcycle parts with it, and will report on my success or failure here in a little while.

[bhhodges]

any type plastic plugs will work well there is also tape specific for plating you can use to cover threads. i believe caswell sells a kit with various sizes of plugs.


bill

[krsimulis]

I am about to start plating after weeks of polishing. My first parts have alot of threads and holes that cannot change diameter, and one part is a master cylinder where I don't want to get plating inside. I am using the copy chrome and wanted to know what was resistant to the solutions and the plating. I thought plastic like what is on the buckets would work, not really sure. Thanks in advance.
Kenny