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Old February 11th 19, 11:47 AM posted to uk.d-i-y
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Default Repairing Bakelite


Anyone experience of repairing Bakelite? I have a piece about 7 inches
square which has snapped in half. Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?
--
Graeme

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Old February 11th 19, 12:00 PM posted to uk.d-i-y
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Default Repairing Bakelite

On 11/02/2019 11:47, Graeme wrote:

Anyone experience of repairing Bakelite?* I have a piece about 7 inches
square which has snapped in half.* Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?

Bakelite is a phenolic resin type plastic and epoxy and polyester (car
body filler/glass fibre resin/ both work very well, Cyanoacrylate does
work but not so well.

As per usal with araldite, mix absolutely equal amounts incredibly
thoroughly, wipe off excess with white spirit, clamp up tight and then
stove at around 100C in the oven.

YOu will get an almost invisible bond that will not be rubberery even in
boiling water




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Old February 11th 19, 12:04 PM posted to uk.d-i-y
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Default Repairing Bakelite

On 11/02/2019 11:47, Graeme wrote:

Anyone experience of repairing Bakelite?* I have a piece about 7 inches
square which has snapped in half.* Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?



Araldite for the supporting plate, but might it show in the join between
the edges of the two pieces of bakelite? Do you need anything in that
gap if it's well supported?

Anything wrong with superglue for the edge join, as it's thin and won't
show much if used v sparingly?




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Old February 11th 19, 02:17 PM posted to uk.d-i-y
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Default Repairing Bakelite

On Monday, 11 February 2019 11:47:29 UTC, Graeme wrote:
Anyone experience of repairing Bakelite? I have a piece about 7 inches
square which has snapped in half. Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?
--
Graeme


When I used to wind transformers as a student holiday job. They were wound on bakelite spools and if the pressure of the wire damaged them we always used araldite and put a blow torch over it to set them.

Jonathan
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Old February 11th 19, 02:21 PM posted to uk.d-i-y
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Default Repairing Bakelite

On Monday, 11 February 2019 11:47:29 UTC, Graeme wrote:
Anyone experience of repairing Bakelite? I have a piece about 7 inches
square which has snapped in half. Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?


Epoxy works but do support the join with the added plate.


NT


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Old February 11th 19, 02:55 PM posted to uk.d-i-y
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Default Repairing Bakelite

On Monday, 11 February 2019 14:38:36 UTC, Graeme wrote:
In message ,
tabbypurr writes
On Monday, 11 February 2019 11:47:29 UTC, Graeme wrote:

A vintage radio site suggests Araldite as an adhesive - unless anyone
has a better idea?


Epoxy works but do support the join with the added plate.


Thanks all. Araldite seems to be the way forward, with a strip of brass
underneath, all wafted over with blowtorch or possibly hot air gun.

JOOI, this is a pre war Bayko base, from when the product was true
Bakelite, and called Bayko Light Engineering. Bayko Light. Geddit?


And if you need to use a dot of paint to touch up the crack ISTR Vauxhall 'brazil brown' being the right colour. If you can stabilise the join very well you should be able to get the exudate as good as flat while still wet.


NT
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Old February 11th 19, 03:37 PM posted to uk.d-i-y
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Default Repairing Bakelite

Araldite with some glass fibre dust added, then sand down. It depends what
its for but if its for an electrical device, be careful using metal plates.
Nice smell when worked.
One other issue is are you sure its bakelite and not paxolin or a
compressed form of that used for cheap pcbs etc in the 70s.
Brian

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"Graeme" wrote in message
...

Anyone experience of repairing Bakelite? I have a piece about 7 inches
square which has snapped in half. Thickness about 1/12 of an inch. Plan
is to glue the two edges and hold together, then add a plate on the
underside - brass, or possibly plastic, glued in place.

A vintage radio site suggests Araldite as an adhesive - unless anyone has
a better idea?
--
Graeme



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