In message om,
aboleth writes


Packing the sides might throw the top out of line.
At least this way you'd know what size "wedges" you need.
Car body filler is good for this sort of thing

There's some fast setting wood filler I guess is pretty much the same.

AFAICS, having used both they are the same thing - just different
colours and body filler seems to be cheaper.

The problem is how to get it to stick.

It sticks well even in thin layers, and sands nicely

--
Chris French