I'd just buy the two part, two tubes, Home Depot 30 minute epoxy. It will glue it just fine and cost about $3.00. It measures for you so you don't have to worry about it. If you don't mind measuring, I personally don't worry much about it. Just eyeball and go. I would just get 4oz or less and some popsicle sticks. $20 for epoxy is crazy unless you have cash to burn.