I have no actual experience with this.

But could humidity in the shell be a factor? As well as some shrinkage of the wrap while it was off the drum?

the longer the wrap is not attached to the drum it will shrink. that is most likely why it is not on it now. if the shell is smooth sanded the wrap clean of glue. you can only estimate the holes being off all around the drum if you share the difference with all the holes instead of just some of them it will be much less. and never noticed at lugs only muffler holes even then they will be just a little out not enough to worry about. gretsch wrap is thin and not as well glued as some other brands. when it starts to come off it really does just fall off. but even the best come unglued. the older the wrap the worse it can be. I would quickly reattach it. by just use equal offset. all around on all holes. wait until it is completely setup. the glue is cured then redrill into a board so not to split the wrap. sandwich it between the drill bit and the board. no heat unless your a magic man. this can most likely be done but practise is the key to this way of stretching the finish. as long as it still will overlap you got it made in the shade man. good luck.

I think this is my friends vintage 50's floor tom. I was concerned about him glueing it back because it might not line up at the end lug holes, which it obviously is not. I suggested him hi bond taping it at the seams. This is a georgous set and the wrap is in beautiful condition, it just fell off when he removed the lugs and all to clean them.

The only way I can think of to lengthen the wrap is to run the piece through a set of rollers under high pressure. By 'thinning' the material you might recover the 1/16th" or 1/8th" inch it is missing by. I don't think the heat process will work because the second you remove the heat, the plastic cools, shrinks and hardens again. Heating the wrap may cause waves in it that will only make the original problem worse. Slightly elongating it by putting it under pressure (as in the roller method I mentioned,) 'may' buy back the 1/8th" or 1/16th" whatever it is. Simply 'heating' the wrap will not do it. Chances of a bad result are higher using the heat idea. Pressure seems to be the solution... thin/elongate the piece somehow.

Sorry, I seem to have a 'solution' - without a means to actually do it. I did want to comment on the heat idea though.

John

Thanks everyone. I finally posted pictures of the finished kit!!

Nice kit~! So how did you get the wrap back into place?