magnetic drums

[Sridhar Ayengar]

William Donzelli wrote:
>>  They also used a drum, and the article described how they coated the drum
>> with the mixture of oxide and -something- with a normal painter brush, by
>> hand...
>>  That -something- is mentioned in the article, I forgot what it was.
> 
> Yes, that -something-. That is what is the mystery.
> 
> The binder for a marine grade paint would probably work fine.

What is it?  Some kind of durable acrylic?

Peace...  Sridhar