UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > General Vintage Technology Discussions

Notices

General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc.

Reply
 
Thread Tools
Old 17th Apr 2021, 3:45 pm   #1
Petedox
Pentode
 
Petedox's Avatar
 
Join Date: Feb 2020
Location: Waterlooville, Hampshire, UK.
Posts: 129
Default Re-applying Valve Lettering?

Has anyone tried to do this when the markings have been rubbed off?
__________________
Pete
Petedox is offline   Reply With Quote
Old 17th Apr 2021, 4:18 pm   #2
Jez1234
Tetrode
 
Join Date: Mar 2021
Location: Morpeth, Northumberland, UK.
Posts: 60
Default Re: Re-applying Valve Lettering?

Only with permanent marker/CD pen so I know exactly what the valve is.
Jez1234 is offline   Reply With Quote
Old 17th Apr 2021, 5:08 pm   #3
Petedox
Pentode
 
Petedox's Avatar
 
Join Date: Feb 2020
Location: Waterlooville, Hampshire, UK.
Posts: 129
Default Re: Re-applying Valve Lettering?

Of course, but I'm talking about re-applying the lettering in the original style.
__________________
Pete
Petedox is offline   Reply With Quote
Old 17th Apr 2021, 5:10 pm   #4
GrimJosef
Dekatron
 
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 3,497
Default 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
__________________
http://www.ampregen.com
GrimJosef is online now   Reply With Quote
Old 17th Apr 2021, 6:43 pm   #5
merlinmaxwell
Dekatron
 
merlinmaxwell's Avatar
 
Join Date: Jul 2008
Location: Maidenhead, Berkshire, UK.
Posts: 10,631
Default 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!).
__________________
Cats have staff, it's dogs that have owners.
merlinmaxwell is offline   Reply With Quote
Old 17th Apr 2021, 7:46 pm   #6
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 4,762
Default 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
__________________
Don't care if it was a bargain why's it in my kitchen
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is online now   Reply With Quote
Old 17th Apr 2021, 7:51 pm   #7
Heatercathodeshort
Dekatron
 
Heatercathodeshort's Avatar
 
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 7,922
Default Re: Re-applying Valve Lettering?

Quote:
Originally Posted by GrimJosef View Post
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.
GJ
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.
Heatercathodeshort is online now   Reply With Quote
Old 17th Apr 2021, 9:29 pm   #8
GrimJosef
Dekatron
 
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 3,497
Default 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
__________________
http://www.ampregen.com
GrimJosef is online now   Reply With Quote
Old 17th Apr 2021, 9:57 pm   #9
valveaudio
Hexode
 
Join Date: Feb 2006
Location: Diss, Norfolk, UK.
Posts: 351
Default Re: Re-applying Valve Lettering?

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

Trevor
valveaudio is offline   Reply With Quote
Old 18th Apr 2021, 12:29 am   #10
Maarten
Dekatron
 
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 3,188
Default 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.

Last edited by Maarten; 18th Apr 2021 at 12:35 am.
Maarten is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 9:32 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.