Thrifty Alternatives ..Building Foam Campers

[GPW]

TB2 or TB3 still works …

[John61CT]

As adhesive under, but for waterproofing, between the canvas and the outer paint?

[linuxmanxxx]

To attach canvas to foam and wood. 2 is very highly water resistant and 3 is waterproof so they naturally do both glue and seal.

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[Pmullen503]

The paint, typically latex, also adds to the waterproofing.

[GPW]

It’s not the glue but the procedure …

1. Attach canvas to CLEAN foam .
2. Add thin sizing coat to waterproof canvas fibers .
3. Paint the outside for weather and UV protection …

[Pmullen503]

It’s not the glue but the procedure …

1. Attach canvas to CLEAN foam .
2. Add thin sizing coat to waterproof canvas fibers .
3. Paint the outside for weather and UV protection …

My *opinion* is it makes sense to apply the second (saturating) coat before the first (adhering) coat has fully dried. I've wondered if it really makes a difference on canvas. The thought is that any polymerizing glue/coating (as opposed to solvent based like lacquer) sticks better to the earlier coat if the earlier coat is not fully polymerized.

[GPW]

PM , If the first coat holding canvas to foam is not dry , the sizing coat only rewets the underlying glue … I tried it …

[GPW]

And while surfing You Tube , I saw this and thought of “ Thrifty Alternatives” … https://www.youtube.com/watch?v=sc6ZXR0 ... &index=126

[John61CT]

Nice! added to my wigwam / dome thread

http://tnttt.com/viewtopic.php?p=1243883#p1243883

[ghcoe]

I have been approached to build a bicycle trailer. I was doing some research and saw that video. Pretty cool. I am not sure where I had saw it, but years ago I found a link to a 1930's teardrop build that used just a simple wood frame with a canvas covering. It was basically just a sleeper, but had a kitchen built into the floor that you covered up to make the sleeping platform. Small, but functionable. Only think I don't like about them is that they supply little to no insulation.

[John61CT]

Get the shape you want then spray closed cellPU foam from the inside

or pour from the outside

then shape to get an even thickness.

For snowy mountain living, 3-4" would be enough.

For more temperate, 1-2".

[GPW]

I was kinda’ thinking of splitting Large Bamboo into uniform slats to make the ribs . Bamboo can easily be heat bent to retain the shape … More like hoops for a Conestoga wagon … sorta ‘ .. Just another idea !!!

[Douglas Knudson]

Wow, I just finished reading this loooong thread. Lot's of good ideas. Doug

[GPW]

Well done DK !!! Now you know as much as we do !!!

[Douglas Knudson]

Hey GPW, I'd like to find more detailed drawings of a Willey Window. Do you have some? I private messaged you on FB. TIA Doug