In the past we have used FSC-88WB, letting it setup a little them squeegee on edges. AFter a short time the seams split a little and there is a visible line showing the primer under the paint.
I didn't have very good luck with Bondo either.
I have heard of using HDU dust in Gorilla Glue. Will that allow me to sand it smooth enough to paint and cover without visible lines?
Any other filler ideas?
Thanks.
-------------------- Amy Brown Life Skills 101 Private Address Posts: 3502 | From: Lake Helen, FL, USA | Registered: Feb 2001
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I'm just sitting here scratching my head.......after glueing 2 pieces of HDU, you have an open seam???? If that's the case, IMO, the problem is in the glue-up. There shouldn't be any split seams with a proper glue-up.
Why Bondo wouldn't work adds another mystery.....
Joe,
Makin Chips and Havin Fun!
-------------------- Joe Cieslowski Connecticut Woodcarvers Gallery P.O.Box 368 East Canaan CT 06024 jcieslowski@snet.net 860-824-0883 Posts: 2345 | From: East Canaan CT 06024 | Registered: Nov 2001
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It's not a gaping hole or anything. It's just in time the seams start to separate. I don't make them where the glue is seeping out the edges as I have never been able to make them look correct with that method. I have never had one of these signs fall apart or fail in anyway. It's just a cosmetic issue. It probably doesn't even show up in the eyes of the customer. It's me being anal about it!!!
-------------------- Amy Brown Life Skills 101 Private Address Posts: 3502 | From: Lake Helen, FL, USA | Registered: Feb 2001
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I'm with you Amy. It's been a problem for me too. I can get the panels so smooth there isn't any visable difference however with time there's a seam. I thought it was due to flexing, but that can't be it either since some panels have been laminated to MDO.
I've tried several adhesives with no resolution. Someone on this forum will probably have the answer.
Joe, Bondo isn't a good solution either. We've all tried that.
I'm looking for some good solutions.
Joe
-------------------- Joe Crumley Norman Sign Company 2200 Research Park Blvd. Norman, OK 73069 Posts: 1428 | From: 2200 Research Park Blvd. | Registered: Sep 2001
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Joe Chisels sent me this link and am not 100% sure I understand but if bondo isn't filling than there would seem to be an adhesives failure. I'm a strong believer in the PU glues like gorrila (and others) or PL premium construction adhesive. I'd use a spline and one or the other of these products. Good luck with the project.
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We have the same problem and I have been looking for a solution. We often glue up 2 4x8 sheets to form a 8'x8' sign, so you don't have a perfect cabinet grade seam like on smaller signs. The problem with most fillers and glue is that they are harder than the HDU so when you sand you wear the HDU away before the filler. We now prime to toughen up the HDU before filling. Our latest attempts at the perfect seam involve a product called Fast and Final interior-exterior spackling compound. We take a small V chisel and run it along the seam, prime the seam and then use the Fast and Final to fill the void, sand, prime and paint. We have some signs up for about a year that haven't cracked. We always back our big signs with Dibond also to tie things together. Fast and Final also works for filling nicks and scratches.
-------------------- Silver Creek Signworks Dick Bohrer Two Harbors, MN Posts: 236 | From: Two Harbors, MN USA | Registered: Jun 1999
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I'm glad to hear someone else using spackling, Dick. I've never given it a thought, but a local builder told me about some new stuff that DAP makes, that's made for exterior use. It's pink when you put it on, but changes to white when it dries. Sands easily, and seems to work well on the HDU. I guess we'll see.
-------------------- Dale Feicke Grafix 714 East St. Mendenhall, MS 39114
"I can do all things through Christ, who strengthens me." Posts: 2963 | From: Mendenhall, MS | Registered: Apr 1999
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"...there are no limits when you aim for perfection..." Jonathan Livingston Seagull Posts: 7014 | From: Highgrove via Toowoomba, Queensland, Australia | Registered: Dec 2002
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-------------------- Brian Oliver Paxton Signs Fort Collins, CO paxton@peakpeak.com www.paxtonsignsofcolorado.com Posts: 237 | From: ft. collins, colorado,usa | Registered: Mar 2001
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