• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Bakelite and Car Brakefluid

Hi All

I've started yesterday with refurbishing two Pye HF25 valve mono blocks.

Their paintwork was quite 'rough' and some months ago, I took the (fateful??) decision to repaint them in their original light blue colour.

I've done my homework (at least I think so:D) and had the paint mixed and found an acceptable solution to re-apply the black legends by laser-printed waterslide film. I've also made tests by painting a coverplate and applying waterslide lettering which looks fine.

I don't want to strip the amplifiers completely as many of the small screws are bolt and nut types and many of the nuts are hiden away underneath.

So, yesterday, I started sanding down one side of one amp by hand which took the best part of 2 hours.

Then I had an idea - car brakefluid damages paint, right?

With some trepidation, I painted the other side of the amp with brakefluid and left it overnight.

And what a pleasure it was - with almost zero effort, and in about 5mins, I scraped the old paint off with a plastic spatula.

It is unavoidable to now and again touch a bakelite valve socket with a bit of brakefluid and here's my question - will car brakefluid damage or dissolve bakelite?

I have made very sure to wipe off excess brakefluid immediately and I apply the stuff very carefully by ensuring nothing runs into crevices to cause longterm damage.

What do you think of this method to remove old amplifier paint?