UK Vintage Radio Repair and Restoration Discussion Forum

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-   -   Baird T5 restoration project. (https://www.vintage-radio.net/forum/showthread.php?t=152005)

FERNSEH 23rd Jan 2019 4:33 pm

Re: Baird T5 restoration project.
 
2 Attachment(s)
A new loudspeaker panel has been made. After several attempts at making the new panel a perfect fit I can sign off this stage of the cabinet restoration.
Now a decision on what to do with that front panel. Should I restore it or make a replacement? There's still a possibility that some nasties exist in the eighty year old plywood. You have to be ruthless when it comes to dealing with woodworm infestation. Any doubt cut it out!

DFWB.

line sync 23rd Jan 2019 9:25 pm

Re: Baird T5 restoration project.
 
I wouldn't take the risk david, there might be dozens of sleeping woodworms in there waiting to come out in spring time so the sooner you get all that infested wood out of your shop the better.
This is a very interesting restoration you`ve taken on and I look forward to reading all the new posts.

Robin

Ed_Dinning 23rd Jan 2019 9:26 pm

Re: Baird T5 restoration project.
 
More fodder for your next conflagration David!

Ed

FERNSEH 23rd Jan 2019 10:13 pm

Re: Baird T5 restoration project.
 
1 Attachment(s)
Hi Robin, Hi Ed,
I've decided that the front panel must be replaced. There could well be some horrors in the plywood waiting to destroy the cabinet again. And burn those old rotten parts as soon as possible!

Correction to my last post. The loudspeaker should be sited on the left side of the front panel.

DFWB.

Tractionist 23rd Jan 2019 11:04 pm

Re: Baird T5 restoration project.
 
Anobium Punctatum just luuuuurves plywood - in fact, it was 'introduced' into this country via Indian [plywood] tea chests! The early [cabinet] shots posted by David seem to show lots of fresh frass on the bottom of the unit - indicating live activity. So - I'd go along with everyone's counsel regarding incineration of the various remnants.

Generally, woodworm is relatively easily eradicated using 'toxic box' techniques i.e. treating all surfaces with something like Five Star Cuprinol [prior to introducing the item into your home!]. The hibernating beetles need to eat their way out of the host wood - and fly once per year in order to mate!

Treatment does not however rectify the unsightly 'flight holes' produced by these insects - albeit that a moderate attack can sometimes be carefully disguised. Fortunately, woodworm is rarely 'structural' in its effect [unlike say Deathwatch] - but it does weaken wood and expose it to other potential maladies e.g. rot/fungal attack.

And in this instance ....... David seems to have happened upon a 'rare example' !!!

FERNSEH 24th Jan 2019 8:51 pm

Re: Baird T5 restoration project.
 
Tractionist wrote: "Treatment does not however rectify the unsightly 'flight holes' produced by these insects - albeit that a moderate attack can sometimes be carefully disguised. Fortunately, woodworm is rarely 'structural' in its effect [unlike say Deathwatch] - but it does weaken wood and expose it to other potential maladies e.g. rot/fungal attack."

Hi Tractionist Good advice. Next week I will make a new front panel. It doesn't make sense fiddling about with the damaged front panel because even it can be saved by using chemicals it will need re-veneering. So why not apply the new veneers to a new solid panel instead.

DFWB.

Tractionist 24th Jan 2019 10:29 pm

Re: Baird T5 restoration project.
 
I was hoping that you'd say that David - but I didn't want to double-think the maestro! That front panel is riddled - in fact it looks as tho' it's taken a few hits with 'grape shot'!

Stay with it - it's coming together ........ :thumbsup::thumbsup:

FERNSEH 24th Jan 2019 10:44 pm

Re: Baird T5 restoration project.
 
In fact the panel is so rotten it is possible to push a screwdriver blade through it.

However, the hardwood framework is in excellent condition so at least some parts of the original cabinet can be reused.

DFWB.

FERNSEH 29th Jan 2019 12:16 pm

Re: Baird T5 restoration project.
 
The construction of a new front panel has started. 12mm plywood will be used and the outer surface will be book matched veneered to resemble the original panel.

DFWB.

FERNSEH 29th Jan 2019 7:11 pm

Re: Baird T5 restoration project.
 
1 Attachment(s)
The rotten front panel was removed today. Superficially, woodworm holes apart, it looked like a solid panel but was in fact just like the other plywood panels - it resembled a Weetabix biscuit. Crumbled into dust.

DFWB.

Tractionist 29th Jan 2019 8:26 pm

Re: Baird T5 restoration project.
 
Have you scanned the logo/script?

FERNSEH 29th Jan 2019 8:42 pm

Re: Baird T5 restoration project.
 
Hi Tractionist
We've taken photographic pictures of the TELEVISOR logo. That's one feature of the set that must be preserved. It might be possible to save the control panel. It seems to be solid, but I said that about the front panel. The T23 has the Baird name on the control panel.

DFWB.

Tractionist 29th Jan 2019 8:48 pm

Re: Baird T5 restoration project.
 
Hi David - if you can lift that part of the veneer [with a Kraft knife?] without damaging it .... it may be a good idea to both scan it, and see if you can incorporate it into the new veneered panel [marquetry style] ..... after having treated the rear of it with Cuprinol etc.

This always assuming that it too isn't perforated with worm flight holes ...... :wave:

FERNSEH 29th Jan 2019 9:42 pm

Re: Baird T5 restoration project.
 
Tractionist wrote: "Hi David - if you can lift that part of the veneer [with a Kraft knife?] without damaging it .... it may be a good idea to both scan it, and see if you can incorporate it into the new veneered panel [marquetry style] ..... after having treated the rear of it with Cuprinol etc."

I was thinking about something on those lines. The critical part of the restoration will be the removal of the control panel. This will have to be done in order the new front panel can be fitted. Let's hope it doesn't disintegrate when comes to releasing the joints between the control panel and the upright corner pieces.

DFWB.

FERNSEH 2nd Feb 2019 12:14 pm

Re: Baird T5 restoration project.
 
1 Attachment(s)
After quite a few adjustments the new front panel was test fitted yesterday. The next stage of the front panel reconstruction will be to cut out the aperture for the timebase controls.

DFWB.

FERNSEH 3rd Feb 2019 4:18 pm

Re: Baird T5 restoration project.
 
2 Attachment(s)
This week I'll have to make a decision what to do with those cabinet sides. They are solid enough but as the pictures show are full of woodworm holes. No doubt with the use of wood filler the holes can be made to disappear but there's always the possibility there could still be nasties in the plywood.

Worth taking a chance or make new panels? Bear in mind the set does not belong to me and I don't wish to disappoint it's owner when those tell tale holes appear again on the cabinet.

The side panels are easy enough to replicate. Use 9mm grade AB plywood.

DFWB.

MonochromeMarc 3rd Feb 2019 4:31 pm

Re: Baird T5 restoration project.
 
Quote:

No doubt with the use of wood filler the holes can be made to disappear but there's always the possibility there could still be nasties in the plywood.

Worth taking a chance or make new panels?
Hi David,

I reckon you've answered your own question there ;)
Better safe for the customer !

Marc.

FERNSEH 3rd Feb 2019 5:13 pm

Re: Baird T5 restoration project.
 
Hi Marc,
There's nothing special about the side panels, no book matching of the veneers so as long as the best wood grain pattern on the new plywood is chosen there will be no problems with the final finish of the replacement panels.
But before a final decision about the fate of the cabinet sides is taken, let's find out what the views of other forum contributors are about the matter.

DFWB.

ThePillenwerfer 3rd Feb 2019 5:17 pm

Re: Baird T5 restoration project.
 
No point spoiling the telly for ha'p'orth of ply.

FERNSEH 3rd Feb 2019 5:24 pm

Re: Baird T5 restoration project.
 
Hi Pillenwerfer,
I reckon those panels are for the chop! That'll keep me busy this week. No LCD TVs to be fixed when we're dealing with television history.

DFWB.


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