re: Which is the correct resin to use?

For shallow pours, crack filling etc I use West System but i think the deepest it is rated for is 1/4". Whichever type you go with, don't forget to apply a sealer coat or you may get bubbles from the wood gassing off (learned that one the hard way!)

*edit... I just realized this post is a year old! lol  What did you go with and how did it turn out?