Mighty Core not heat-tolerant?

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jim_p

jim_p

SGF, Supreme Grumble Framer
Joined
Apr 8, 2007
Posts
2,151
Loc
Natick, MA
In another posting I made reference to having to mount velvet to a 36x72 piece of foamcore. Due to the size of the piece I decided to use 1/2" Mighty Core as a substrate to reduce the chance of bending.

I was trying several mounting methods on a test piece before moving on to the big one. Even though heat-pressing isn't recommended for velvet, I decided to try a test anyway just to see... I put down a small square of mounting tissue, then a 3" swatch of fabric. When I hit it with the tacking iron, I was horrified to note that the Mighty Core had bubbled up under the heat! There was like a 1/16" hump in the foamcore! Needless to say, I used something else on the final job (a combination of 3M 77 adhesive, 3M Photo Mount, and fabric glue for wrapping around the back).

Has anyone else run into this before?
 
jim_p said:
Needless to say, I used something else on the final job (a combination of 3M 77 adhesive, 3M Photo Mount, and fabric glue for wrapping around the back).
Click to expand...

And you didn't need to drink a beer when that job was done.

I have never used Mighty Core before so I didn't know that. Is this like Gator Foam board.
 
Instead of using those noxious spray adhesives (whose bond will probably fail eventually anyhow), try rolling on Frank's Fabric Adhesive with a yellow foam roller. You can let it dry and then heat-reactivate it when you've placed your fabric. Safe, easy, and permanent.
:cool: Rick
 
I have bubbled foamcore in the past because the tacking iron was turned up to max and I didn't notice until it was too late.

Jeff K
 
Rick Granick said:
Instead of using those noxious spray adhesives (whose bond will probably fail eventually anyhow), try rolling on Frank's Fabric Adhesive with a yellow foam roller. You can let it dry and then heat-reactivate it when you've placed your fabric. Safe, easy, and permanent.
:cool: Rick
Click to expand...

I had considered FFA for this job, but the client needed it quickly and I didn't have time to order any in. I'll definitely remember it for next time, though!
 
You can also use clear acrylic medium, which should be easy to find locally at an art supply shop. Frank's has a more "velvety" liquid consistency, but the acrylic medium will work the same way. I think the "gloss" type is best.
:cool: Rick
 
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