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Bonding plexiglass to MDF

Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=63750
Printed Date: April 27, 2024 at 9:23 AM


Topic: Bonding plexiglass to MDF

Posted By: hellyhans
Subject: Bonding plexiglass to MDF
Date Posted: October 03, 2005 at 10:50 PM

Hi, Well I'am want to make to top of my box plexiglass. Any of you guys know how to bond the plexiglass to MDF and make it seal good?? I dont want to use carpenters glue as I will see the glue through the plexiglass where the screws are. The plexiglass will be flat on the top with screws of course, but I'am thinking of maybe some kind of foam to seal it or maybe clear silicone.. but would the silicone be good enough as a glue also?? thank you

Plexi is 3/4 thick like the box




Replies:

Posted By: jlord16
Date Posted: October 04, 2005 at 1:44 AM
Unless you use an adhesive silicon (glue and silicon in 1) a typical silicon will only provide a seal.  If you could use a clear glue around the outside edge, the screws will do the rest in holding it in place, and then just sillicon around it for a seal, a pic wuld help if you have 1

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Clarion DB36MP
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Posted By: fr33w0rld
Date Posted: October 05, 2005 at 2:49 PM

i think if u bult a ledge or something for thje plexi to sit on..and this took cleaer silicon and ran a nice bead around the whole thing..like a nice think bead..let dry put in place and screw it down every 3 inches it should be fine...just screw it down tight so u get a good seal...it's like making your own custom gasket for it..



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HU Alpine CDA-9855 Amp MA Audio 802sx 4,400 RMS 1 ohm Sub 18" MA Audio RMS 5,000 @ 1.5 ohm Ported Box Car 99 civic Si




Posted By: realitycheck
Date Posted: October 05, 2005 at 3:59 PM
Yeah no matter what your going to be able to see that theres something there. If you could put it on from the inside it would be better.

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Learning the trade one fiberglass creation at a time!




Posted By: skitty4fingers
Date Posted: October 05, 2005 at 8:42 PM
i made a box similar to what your talking about and what i did was trace out where the plexi and mdf were coming in contact with a sharpe, fliped it over and on the back side of the plexi i taped out a design that would cover anywhere that i had traced but still let you see into the box then i sprayed it with duplicolors liquid aluminum paint, fliped it over and sealed it with silicon an secured it with 1/4in rivets. it came out looking realy clean and gave it an industrial look to it.


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If everything seems to be going well, you have obviously overlooked something.





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