NightCap wrote:I was wondering if you could whip up a quick tutorial on the uses of the epoxy wood flour mixture? How to make it and best way to apply etc so a nimrod like me could read it a couple of dozen times and know how to do it.

You see, I want to get it right the first time. Can't afford many mistakes.

Oh yeah, "Please?" Do you need to use cloth or would fibers do the same thing? I want a strong joint where wall meets roof on the outside of the tear. It is ok to talk down to me.. lol
Not sure about 'wood fibers.' Wood flour is what I use, and it's the texture of regular white flour. Very powdery. "Wood fibers" would concern me as it sounds very course. I think you want flour. Andrew (
anjib) knows a lot more about the glass fibers than I. Maybe he can chime in if he's watching this thread?
Ok, I'll give this a shot. Not real sure if this is what you want, but I hope some find it useful.
The first thing is to mix your epoxy. My epoxy is Raka brand. I use the pump on the epoxy system so I don't have to measure. (It's usually a good idea to measure the first few pumps to make sure your pumps are working properly) I use two pumps of epoxy (the gallon jug) and 1 pump of the hardener. You can also see the bondo squegee I use later.
This photo shows the epoxy mixed. I always use plastic drinking cups and plasticware to mix it. This way I just trash it when done. You can use rubber bowls if you'd like. Wait for the epoxy to dry and pop out the old epoxy to re-use the container.
The next thing to do is add your fillers. I'm using wood flour (pine wood flour) to add to the epoxy. This stuff is really cheap, and it works very well. It makes *very* strong bonds. If you epoxy wood together using this method, the wood will tear away before the epoxy joint fails. It's also *very* difficult to sand.
Here is the wood flour mixed with the epoxy. I used 4 big tablespoons of pine flour for the small amount of epoxy. I mixed it to a peanut butter thickness. I turned the spoon upside down to try to show the thickness of the mixture.
Using the spoon I dabbed some of the mixture into the seam/screw holes on the front of the camper. I usually don't apply it this way, but I wanted to show a before and after. I usually carry a small piece of plywood around with me, and after mixing the epoxy/wood flour I pour it (actually scoop it) onto the piece of plywood and use it similar to an artist using a paint palette. This spreads the epoxy out more and keeps it from "going off" or "kicking off" too soon. If you keep the epoxy mixture in a cup, you'll need to work very fast as it will heat up. I find it easier to use the "palette."
Using a bondo squegee, I smeared the epoxy/wood flour mix into place. I try to do it all in one swipe. I never drag the squegee both directions, it's only one directions when I apply it. Try to keep the epoxy mixture as close to a finished product as you can - it will save you a lot of time in sanding.
The one pictures above is a good seam fill. I'll go back later with a mixture of epoxy/glass bubbles and do the same thing.
Hope this helps.
