krbsailing said:
I can't remember the name of the product......but, it has a fellow on the can that looks like the old Ajax bald guy flexing his muscles
It's some type of plaster type material -- you just add water -- turns yellow and is extremely hard.
Don't leave to much on the slate cause it's hard to sand after it dries but, lasts forever
Sounds like the one you're thinking of is Durham's Rock Hard (Watter Putty). I was planning to use that one myself. I've only done one table so far, and learned the hard way about what you said -- its a royal pain to sand. They have a tip on their website that I'm going to try this time (let set for 20 minutes and then shave excess off, leaving very little to sand):
http://www.waterputty.com/view.htm
I also have some chunks missing from the slate seams as Smittie described. There is one chunk missing along the seam edge that is about two inches wide (along the seam), half an inch tall, and half an inch long in the lengthwise direction of the table. Another missing chunk is circular, slightly larger than a quarter, and maybe about a quarter inch deep.
Unfortunately, the area that I live in gets too warm for beeswax in the garage (my last table got a wax mark through the cloth along the seams in the Summer), so I'm stuck with either the Durham's or Bondo. I'm not sure if the slate craters would be considered too big for Water Putty to work well, or if I should go with Bondo. Since I'm a newbie at this, I'm a little nervous about using Bondo, in case I screw up.
Is Bondo any harder to work with than water putty? I know I should score the Bondo at the seams or else it will probably chip the slate due to the extremely strong bond. Is it a big pain to get all the Bondo off the seams for a fresh start on the next assembly?