Experience is the best teacher
Experience is the Best Teacher---Or to put it another way---I screwed up!
Experience is the Best Teacher---But the lessons are so darned expensive.
Anyway, by now you have figured out that I got myself into another mess. Picture this---a 27 x 72 inch piece of ¾ Apple plywood. Glued to this are two more pieces of ¾ plywood making one piece 27 x72 x a little over two inches thick. This was glued with Tite Bond slow drying glue (which seems to dry just as fast as the regular kind). Glenn and I both worked applying glue, to glue the smaller pieces to the large one, one section at a time.
A couple days later, all by myself, I apply the same glue to add another 27 x 72 inch layer of ply. This was all one piece. Glue applied with a roller (Soft rubber wallpaper roller. Glue came right off of it when I was through). Glue went on rapidly; I thought. However, it was becoming difficult to remove the roller from the plywood near the end.
I immediately ran woodscrews thru the top layer of ply into the second layer. The screws just spun around without appearing to hold anything. Being a newbie, I had selected the wrong kind of screws. So I immediately began piling on weight. Weight was in the form of 16 pound slabs of cement. I forget the exact count but it was over 25 of them (see photo).
Everything was great UNTIL a day and a half later when I removed the weights. I had nothin’ stuck to nuttin’ in several areas that I ccould see. One area is 36 inches by, up to 12 inches in from the edge with a 3/32 inch gap. When I close the gap with a clamp the ripples in the bottom of the bench top (yes this was to be a bench top). The riples are very visible with the naked eye. I have no idea what percentage of the total job is actually glued. I just know that there are some major non-sticking areas.
QUESTION: What do I do now?
...Trash it and spend another couple hundred dollars for more plywood?
...Try to separate the two panels? I assume there would be, at least, some tear-out. Perhaps with some judicial planning and use of filler, I would lose only one sheet of plywood instead of three. If this is the choice, how would I do it?
...Is there a way to separate them? Tite Bond says that there is NO solvent for the glue. The man also said, “Heat from a heat gun, if applied soon enough, might loosen the remaining glue.” That is one heck of a heat sink. I think that trying to heat a laminate of three pieces of ¾ inch 27 x72 plywood enough to soften the glue is a good prescription for a burned down workshop.
I WILL BE REALLY GLAD when I have enough experience to keep myself out of most problems.
All help will be greatly appreciated.
I have tried to add a link to the photo. I don't know if it attached or not.
Last edited by Jim C Bradley; 08-20-2010 at 06:01 AM.
First of all you have to be smarter than the machine.