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 European Philips speaker baffle plate.
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 Return to top of page · Post #: 1 · Written at 1:59:07 PM on 14 April 2020.
Johnny's avatar
 Location: Hobart, TAS
 Member since 31 July 2016
 Member #: 1959
 Postcount: 410

I need to replace the speaker cloth on this unit.
The original cloth is totally glued down on a plywood type soft wood.
Need to do the same with the replacement cloth as there are many holes then cut through the cloth.
Fraying around these holes I can see will be my reputation and undoing.
Magic eye, band switch indicator etc, etc.
Any tips and type of glue would be appreciated.
I have on many jobs got away with PVC, but not with this one.
Leak through, and fraying being the main problem.
Help, JJ


 
 Return to top of page · Post #: 2 · Written at 2:04:31 PM on 14 April 2020.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Jj
I had the same problem on my Telefunken.
Leak through. So I heated it right up with a hair dryer and now it's it's invisible.
It was PVC glue .


 
 Return to top of page · Post #: 3 · Written at 3:47:10 PM on 14 April 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6012

I used regular PVC glue on maroon grille cloth on my University Universal Test Speaker and it didn't leave a bleed through stain, though I half expected it to. The hair dryer tip sounds like a good one.


 
 Return to top of page · Post #: 4 · Written at 4:19:46 PM on 14 April 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4344

It depends on the situation. The very early glues were often casein and water was the enemy, so that got it off.

There are aqueous glues and solvent and my preference is acrylic in many cases as it remains flexible, making it ideal for speaker cones.

Now if it is possible, make like an art stretcher (for canvas) and mount the fabric on it. That will enable you to have no creases in it. you can take your choice of priming the card, or thin craft wood with the binder first, however, you should be able to then massage the binder through the cloth with an art brush.

The advantage with PVA & Water based binder, you can thin them with a bit more water.

If you use medical "MIcro-pore tape" or coffe filter (non woven) on a cone, you can paint binder onto it. The advantage of Micropore is that it initially sticks & you can form it into the corrugations.

Ribbon is good on book spines as well by adaption of this technique. However, as Acrylic never dries, you need to coat it with talc powder.


 
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