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Canvas covered foamies (Thrifty Alternatives...)

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Re: #1

Postby ghcoe » Thu Dec 28, 2017 6:01 pm

Just realized I never posted up the maiden voyage and fall crawl meet up on this thread. So here it is. https://www.youtube.com/watch?v=XoaZZwLwcSc
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

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Re: #1

Postby Ned B » Tue Jan 02, 2018 2:28 pm

+1 subscriber


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Re: #1

Postby ghcoe » Tue Jan 02, 2018 5:41 pm

Ned B wrote:+1 subscriber


Thanks!
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

My build viewtopic.php?t=54099
Working with flashing for foamie construction viewtopic.php?f=55&t=60303
Making a hot wire http://tnttt.com/viewtopic.php?f=55&t=55323
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Re: #1

Postby ghcoe » Wed Feb 28, 2018 9:19 pm

Added notes to first post viewtopic.php?f=55&t=54099 .
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

My build viewtopic.php?t=54099
Working with flashing for foamie construction viewtopic.php?f=55&t=60303
Making a hot wire http://tnttt.com/viewtopic.php?f=55&t=55323
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Re: #1

Postby zzzizxz » Sat Mar 23, 2019 8:49 am

ghcoe wrote:Got the other roof piece kerfed today.

DSCF1848 small.jpg


The first piece is glued and dry.

DSCF1850 small.jpg


My GS ran out of pressure so I had to switch over to GG to finish gluing the two pieces together. I had just enough pressure to finish the outside perimeter with the GS

DSCF1852 small.jpg


Hi @ghcoe, I know this is a really old thread, but I was wondering what you glued to laminate the two roof panels together. I'm going to be at this stage on my own build in a bit, and was wondering.
Did you apply GS (until you ran out) to the whole bottom sheet, or did you just spray it into the kerfs, or did you just go around the edges?
Also, if you did apply it to the whole sheet, how did you do that? Do you just spray some on and use a brush to spread it around Were you concerned with the GS expanding and buckling the two sheets in the middle, or does spreading it keep it from expanding so much?

Thank you!
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Re: #1

Postby ghcoe » Sat Mar 23, 2019 10:26 am

zzzizxz wrote:
ghcoe wrote:Got the other roof piece kerfed today.

DSCF1848 small.jpg


The first piece is glued and dry.

DSCF1850 small.jpg


My GS ran out of pressure so I had to switch over to GG to finish gluing the two pieces together. I had just enough pressure to finish the outside perimeter with the GS

DSCF1852 small.jpg


Hi @ghcoe, I know this is a really old thread, but I was wondering what you glued to laminate the two roof panels together. I'm going to be at this stage on my own build in a bit, and was wondering.
Did you apply GS (until you ran out) to the whole bottom sheet, or did you just spray it into the kerfs, or did you just go around the edges?
Also, if you did apply it to the whole sheet, how did you do that? Do you just spray some on and use a brush to spread it around Were you concerned with the GS expanding and buckling the two sheets in the middle, or does spreading it keep it from expanding so much?

Thank you!


Well that does go back ways. I had to go back and read up some.

From what I remember I was not too concerned about the glue expansion at that point of the construction. My thinking was that the kerfs where going to absorb the extra glue in the expansion. I just basically poured the glue on. I did not really have much time to spread everything out evenly.

In thinking back on this, I think the Gorilla Glue would be a better choice for this kind of glue up since the expansion rate is much slower than Great Stuff and more controllable.

A suggestion would be to glue up your first panel to the walls. Then apply the GG to the first panel kerfed side. Then spray the GG with water with a spray bottle and then lay the top panel on and clamp into place. The water will activate the glue and cause it to expand more thus filling in some of the kerfs and creating a good panel bond.

Another suggestion, if your are still concerned about panel separation, is to use some 2"x2" inside and outside to act as a clamp. Place a 2"x2" on top that spans across the walls and then screw it into a 2"x2" that you have cut to fit between the wall inside. This would hold the curve in the correct position and keep the panels from separating as the glue dries. I think if I do another curved front build I would use this technique. Screw holes are easy to fill later. I think you would only need a screw in the center and one on each side for this technique.

Well, hope this helps you out, George. :thumbsup:
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

My build viewtopic.php?t=54099
Working with flashing for foamie construction viewtopic.php?f=55&t=60303
Making a hot wire http://tnttt.com/viewtopic.php?f=55&t=55323
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Re: #1

Postby zzzizxz » Sat Mar 23, 2019 1:44 pm

[/quote]

Well that does go back ways. I had to go back and read up some.

From what I remember I was not too concerned about the glue expansion at that point of the construction. My thinking was that the kerfs where going to absorb the extra glue in the expansion. I just basically poured the glue on. I did not really have much time to spread everything out evenly.

In thinking back on this, I think the Gorilla Glue would be a better choice for this kind of glue up since the expansion rate is much slower than Great Stuff and more controllable.

A suggestion would be to glue up your first panel to the walls. Then apply the GG to the first panel kerfed side. Then spray the GG with water with a spray bottle and then lay the top panel on and clamp into place. The water will activate the glue and cause it to expand more thus filling in some of the kerfs and creating a good panel bond.

Another suggestion, if your are still concerned about panel separation, is to use some 2"x2" inside and outside to act as a clamp. Place a 2"x2" on top that spans across the walls and then screw it into a 2"x2" that you have cut to fit between the wall inside. This would hold the curve in the correct position and keep the panels from separating as the glue dries. I think if I do another curved front build I would use this technique. Screw holes are easy to fill later. I think you would only need a screw in the center and one on each side for this technique.

Well, hope this helps you out, George. :thumbsup:[/quote]

That does help, thank you! I really like the 2x2 idea as well. I think I'll probably go that route when I get there.

Thanks!
David
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