I have had alot of experience using the structural epoxy mentioned above. I would not recommend this stuff for several reasons. 1.) expense- this stuff can cost upwards of 100 dollars a gallon. 2.) odor- it is very smelly, and in enclosed spaces can make you ill, some people develop allergic reactions to it over time. 3.) This stuff is made to bond concrete together. It does not dry clear, or very hard, as it is made to be semi-elastic.
You can try this stuff if you want, but do it in a very well ventilated area, be carefull how you mix it (gets very hot) and good luck!
By the way, I used this type of epoxy in an industrial setting, for it's intended purpose of structural repair.