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Attach foam to speakergrill problem
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serioussound View Drop Down
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    Posted: 18 November 2018 at 5:15pm
Im about to put some foam on to the back of metall grill on my RCF ESW 1018.

I got this spray adhesive from Adam hall and spray it gently on to the grill. problem is whe attaching the foam to the grill the glue is very visible and it looks very bad.

Is there any other type of glue for this?

Notice my foam is attached behind the grill seen from the front of speaker.

The glue is to be seen between the holes in the grill everywhere...
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Search for posts from markie about glue. He's our resident expert on all things grill.
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Points: 8128 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2018 at 5:40pm
Spray paint grill,
Lay it on top of foam,
Put weight spread evenly on grill.

Simples.
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I've always used 3m spray77 


it its sprays like a spray and doesn't go like spider webs.

2 light coats on both surfaces and press togeather
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3m77 is the right stuff but only spray the grill,if you get it on the foam then dust will stick to it through the holes.
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I've got some good results with bison spray glue. When I had the same question, people advised scotch weld 77, but I'm almost sure it's the same stuff but with a different brand on in. 
My foam (or actually mesh) is still holding on.

I also had good results with white wood glue, applied it with paint roller on the grill, and press it evenly for about 3/4 hours.
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Points: 70 		Post Options Post Options   Thanks (1) Thanks(1)   Quote whizzzy Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2018 at 10:47am
3M sell a product called 'Craft Mount' - just Google '3M Craft Mount' - probably not too different from the 3M77 mentioned earlier.

Spray it on the grill very, very sparingly. A light dust coating is all that is needed. When spraying keep the grill spaced well off any surface so that the residual spray dust doesn't blow back onto the front of the grill. Give it a few moments to become tacky. From my experience it works best just to spray the grill only. Position the foam sheet very accurately as once it comes into contact with the grill it is difficult to re position again. 
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Yes yu cant use just normall contact adhevise its spider webs makes a right mess

77 is good, but expensive , better tho tha make a cock up on the job
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markie View Drop Down
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Scotchweld 77 is usually a bit cheaper than Craft mount, but either will do the job.

NEVER spray both surfaces. Lay the foam flat, spray grill only and lay the grill onto the foam.

As pointed out above if you spray the foam there will be glue on the exposed foam between the perforations, which will pick up dust, bugs, and anything else floating around. It will make a pigs ear of the job.
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I bought some 5mm hi-fi35 foam from Amazon and have done exactly the same to all my speakers, I used double sided sticky tape I got from Poundland and it works great. 

This foam :

I lined the sides and middle of the inside of the grill from screw hole to screw hole so there's a lot of tape holding it and it's excellent.


Edited by Fred_dibna - 30 November 2018 at 5:34pm
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Originally posted by markie markie wrote:

Scotchweld 77 is usually a bit cheaper than Craft mount, but either will do the job.

NEVER spray both surfaces. Lay the foam flat, spray grill only and lay the grill onto the foam.

As pointed out above if you spray the foam there will be glue on the exposed foam between the perforations, which will pick up dust, bugs, and anything else floating around. It will make a pigs ear of the job.

Listen to Markie, he knows about grilles!! 
It's just bits of paper flapping about in a box.
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