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 Post subject: Reattaching a plexiglass scale to aluminum
PostPosted: Nov Sun 25, 2018 2:38 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1482
Location: Cambridge MN USA
Got an old Heathkit audio amp which has a plexiglass piece with the control functions on it- looks similar to a radio dial scale and is similarly illuminated. The glue dried out and it came off the aluminum front plate. What’s the best glue to reattach it?

Thanks,

Scott Todd


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 Post subject: Re: Reattaching a plexiglass scale to aluminum
PostPosted: Nov Sun 25, 2018 4:45 am 
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Joined: Dec Sat 24, 2011 9:17 pm
Posts: 5016
Location: Vancouver Island, Canada
I would use epoxy in a plunger-type applicator such as JB Weld. But Crazy Glue would work maybe just as well.

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 Post subject: Re: Reattaching a plexiglass scale to aluminum
PostPosted: Nov Sun 25, 2018 5:36 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 10356
Location: Mountains of Mourne. Ireland.
Any white PVA woodworking glue will bond it forever.
Use a small amount on mating surfaces and run a small bead of glue around/on top of the edges (filling gaps). Wipe away any glue that appears on the front. Best to secure its position with small pieces of masking tape so it doesn't swim around.

The regular non waterproof type is the easiest to clean with a wet ←(water) cloth/kitchen paper towels.
Make sure you remove all from the front before it dries (no smears) Lol

Greg.


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 Post subject: Re: Reattaching a plexiglass scale to aluminum
PostPosted: Nov Mon 26, 2018 1:10 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1482
Location: Cambridge MN USA
Interesting about PVA. Not sure I'd have considered it, so thanks for the tip. I'll see if I still have any, but if not it should be easy enough to come by.

Scott


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 Post subject: Re: Reattaching a plexiglass scale to aluminum
PostPosted: Nov Mon 26, 2018 4:06 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 10356
Location: Mountains of Mourne. Ireland.
I used to manufacture products for Barneys New York, that required glass to be permanently bonded to wood - a good quality PVA white glue was used. Never had a single return. Lol

Greg.


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