tmclemore wrote:I did not like the results of Gripper over wood. I tried it and could not get it to stick as well as TBII. I used the thinned TBII to make sure all of the canvass was penetrated with glue. I call that sizing but it may not be the correct use of that word. I did pre-wash my canvass. Although I don't think it is necessary. I did it because the area I was covering is so large and I was afraid the canvass would shrink and not cover completely or pull away at the edges. When I washed the canvass it did shrink about 5 inches each way. On a 12 x 15 canvass that wasn't that much in my opinion. I think you could get away with out pre-washing since your camper is quite a bit smaller. It may help pull the canvass tither and offer some structural enhancement.
I see some folks are recommending the use of epoxy and fiberglass. That was one of my choices in the beginning but after working with it a bit I decided on the PMF because it is less mess and easier to clean up. Also it seemed to be much more forgiving. Epoxy is hard to get off of your hands and the driveway and it stinks. I tend to be sloppy when I work with glue so I didn't want the mess. The price may be close to the same but having to wait for more epoxy when you run out is a PITA. Lowes is right down the street and they keep TBII on hand. Also be prepared to sand your butt off. I left my finish with the texture of the canvass. I'm not sure I could do that with epoxy. My trailer is a lot bigger and I was afraid I would have to sand everything to make it look smooth and finished. Not only am I sloppy but I'm also a little on the lazy side.
I think you will be good with which ever finish you decide to use, PMF or Epoxy. They will both work well in my opinion.
tmclemore wrote:I did not use the mix on mine.
I would let the mineral spirits completely evaporate before I tried to glue anything to the plywood. You could try glueing a small patch of canvas to the mistake and see how it adheres. It may work just fine. If it does the sand it off and pmf the whole thing. I'm not sure how the oil in the mineral spirits will affect the sticking of the TBII. Test it before moving forward.
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Homebrewer25 wrote:George Coe put up a good video on his foamie #2. Putting the canvas on the exterior starts just past the 2 minute mark.
https://youtu.be/IOTRwcs6oT4
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