Re-applying Valve Lettering?
 

Has anyone tried to do this when the markings have been rubbed off?

Re: Re-applying Valve Lettering?
 

Only with permanent marker/CD pen so I know exactly what the valve is.

Re: Re-applying Valve Lettering?
 

Of course, but I'm talking about re-applying the lettering in the original style.

Re: Re-applying Valve Lettering?
 

I've seen it done commercially using a small (hand-operated, I seem to recall) roller-transfer machine, a suitable template, and the appropriate heat-resistant paint. It's not a very sophisticated process. Mullard, Brimar et al would have done the same thing but probably a hundred times faster and with quite a lot of motorised machines working in parallel.

Cheers,

GJ

Re: Re-applying Valve Lettering?
 

You can get white pens from hobby shops with fine tips. All it would take is a steady hand and an artistic bent (all, he said!).

Re: Re-applying Valve Lettering?
 

Where's My John Bull Printing set when I need it.

Might be worth a go I seem to recall the letters were about 2/10"

Last saw mine in around 1968.

Cheers

Mike T

Re: Re-applying Valve Lettering?
 

The roller printer was made by a company called ADANA. I used one when working after school at D&B Television way back in 1963. They gave a first class result if the rollers and pad were in good condition. It won't of course print the logo. J.

Re: Re-applying Valve Lettering?
 

That's true. You'd need to get a special template made if you wanted a logo. But they can't be hard to fabricate. The chap I saw doing it was printing the name, and logo, of a famous hifi company (at their behest) on Russian valves. I think he'd cleaned the original labelling off too.

Cheers,

GJ

Re: Re-applying Valve Lettering?
 

Look up Tampo Printing, there is a lot of info out there.

Trevor

Re: Re-applying Valve Lettering?
 

Tampo printing or pad printing might be too new as it was introduced in its current form in the 1960's. Manufacturers did probably use some form of tampon printing in general. I think there's a chance that Philips in particular used some kind of glue for the printing and then applied chalk afterwards. Not sure, though.