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I was wondering what glue I would use to attach a piece of signfoam to a piece of cor-lite for my FKAB project. I've already carved the foam and painted it, but left the back of the piece bare. If I paint the cor-lite first (I think I have to for this project), what glue would be best over paint or UV Clearcoat?
Thanks Rapid
-------------------- Ray Rheaume Rapidfire Design 543 Brushwood Road North Haverhill, NH 03774 rapidfiredesign@hotmail.com 603-787-6803
I like my paint shaken, not stirred. Posts: 5648 | From: North Haverhill, New Hampshire | Registered: Apr 2003
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Ray, make sure you sand the painted area first, mist the HDU with water and use PB240 from Precision Board (Coastal Enterprises) Solid and permanent.
k31
-------------------- Pierre St.Marie Stmariegraphics Kalispell,Mt www.stmariegraphics.com ------------------ Plan on knowing everything before I die and time's running out! Posts: 4223 | From: Kalispell,Mt 59903 | Registered: Mar 2000
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Rapido...........PB240 or Gorilla Glue. They're both basically the same. Use a thin coat 'cuz the stuff REALLY expands..........and like pierre said, mist one side with water and clamp together.
-------------------- Mike"Spud"Kelly zipperhead design Westminster, MA Posts: 367 | From: Westminster, MA | Registered: Mar 2001
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Cool infosite, Villie. In fact I added it to my wife's favorites, but it's not inclusive enough for HDU applications and the scope of their reccommended adhesives is rather limited.
k31
-------------------- Pierre St.Marie Stmariegraphics Kalispell,Mt www.stmariegraphics.com ------------------ Plan on knowing everything before I die and time's running out! Posts: 4223 | From: Kalispell,Mt 59903 | Registered: Mar 2000
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Is "coro-lite" one of the aluminum faced products? If not I would worry about the paint on the coroplast being a weak link. There aren't many paints/inks that really bite into it and pass the tape test. For the size (I'm guessing) your working with, would you really need a backer ... if so, why would you paint it before covering with glue? (if it's a completely hidden backer)
-------------------- Compulsive, Neurotic, Anti-social and Paranoid ... but basically Happy Posts: 2677 | From: Rochester, NY, USA | Registered: Nov 1998
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I got the 12" X 36" display street and am glueing the signfoam piece to it. It's more like a fiberglass surface and I can scuff it up and get a better grip. I've never worked with it, or the sign foam before and it's my first attempt of a 3D sign. My FKAB project.
Thanks all. Rapid
YO, SPUD! Good to see ya! Expect an visit one of these days when I go down to see my folks in Hubbardston. I might even warn ya when!
[ July 27, 2003, 10:52 AM: Message edited by: Ray Rheaume ]
-------------------- Ray Rheaume Rapidfire Design 543 Brushwood Road North Haverhill, NH 03774 rapidfiredesign@hotmail.com 603-787-6803
I like my paint shaken, not stirred. Posts: 5648 | From: North Haverhill, New Hampshire | Registered: Apr 2003
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Seal the back side of the HDU with primer, paint or some other material, run a bead of silicone on the back side around the perimeter of the HDU, place a couple strips of foam tape to the inside of the shape (to hold it in place until the silicone cures) then apply to the core-lite.
If anything fails, it's going to be the coating seperating from the substrates.
-------------------- "If I share all my wisdom I won't have any left for myself."
Mike Pipes stickerpimp.com Lake Havasu, AZ mike@stickerpimp.com Posts: 8746 | From: Lake Havasu, AZ USA | Registered: Jun 2000
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Whoa, Michael me boy! Introducing a variable into the mix is not a cool idea. Particularly with an expensive or heavy sign. The possibility of delamination in time is very real. The HDU adhesive applied to raw HDU and the substrate is the least likely to fail. Apply HDU adhesive to raw HDU and raw wood is virtually failure proof end result. I now have a 7 year track record with these procedures, actually since the first HDU (SignFoam) was out there. It may be longer.
k31
[ July 27, 2003, 01:18 PM: Message edited by: pierre ]
-------------------- Pierre St.Marie Stmariegraphics Kalispell,Mt www.stmariegraphics.com ------------------ Plan on knowing everything before I die and time's running out! Posts: 4223 | From: Kalispell,Mt 59903 | Registered: Mar 2000
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Pierre, your objections are valid for a sign going out into the weather to work for a living; this project is intended, if I understand correctly, to be a showpiece cooperation of individual talents, and likely to be kept warm and dry. Nobody gets crazier about adhesives than I do, normally, but I don't see Ray having to sweat this one too much.
-------------------- "A wise man concerns himself with the truth, not with what people believe." - Aristotle
Cam Bortz Finest Kind Signs Pondside Iron works 256 S. Broad St. Pawcatuck, Ct. 06379 "Award winning Signs since 1988" Posts: 3051 | From: Pawcatuck,Connecticut USA | Registered: Nov 1998
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HDU= High Density Urethane, of which Signfoam is one.
k31
-------------------- Pierre St.Marie Stmariegraphics Kalispell,Mt www.stmariegraphics.com ------------------ Plan on knowing everything before I die and time's running out! Posts: 4223 | From: Kalispell,Mt 59903 | Registered: Mar 2000
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The only variable using my method is how good ya are at prepping HDU and a composite panel.
Silicone bonds to virtually everything (except PVC, but nothing bonds to PVC), and there's nothing wrong with using it in signage as its bond strength far exceeds requirements for any sign (roughly 20 PSI or 2800lbs of holding force for a 1/2" wide bead around the perimeter of a 4x8), and on top of that it allows for thermal expansion between dissimilar materials whereas a rigid adhesive does not (thermal expansion can exceed the shear strength of the adhesive, splitting it in half).
Silicones are used to hold the glass and aluminum facade (windows) to most skyscraper superstructures, which is something I have a great deal of experience with.. and the stuff never fails.
-------------------- "If I share all my wisdom I won't have any left for myself."
Mike Pipes stickerpimp.com Lake Havasu, AZ mike@stickerpimp.com Posts: 8746 | From: Lake Havasu, AZ USA | Registered: Jun 2000
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