[Hallicrafters] Chassis Cleaning

[Bill]

What is the best method of cleaning up an old chassis?

I am restoring an HT-37 and the chassis is covered in what seems
to be just a heavy layer of dust.  I will remove all the tubes,
and then the cleaning begins.  I was thinking of building a cradle
to hold the chassis on a small angle and using some sort of cleaning
materials to let if naturally migrate towards one end of the chassis
and it will be collected and disposed of there.

What kind of cleaning material should be used?

Your answer greatly appreciated.  This will complete my Halli station
once it is cleaned, check, tuned and tested.

K2WH