Rubens Tube Yule Log

Step 6 Epoxy end to end

Moosh a gumball sized blob of epoxy putty over and over until the color smooths out. After everything's homogenized, roll it into a snake, and lay it in the inner corner of your PVC endcap. If you've played your cards right, it should fit all the way around, and pressing it onto the end of the tube will create a nice, even seal. If you didn't play your cards right, like me, you'll have to seal things again with a bead of silicone caulk around the lip of the endcap.