Great going!! I would strongly advice printing with Woodfill filament, it's PLA with wood powder in in. it prints a little porous like balsa wood. When you infuse it with 24h heated epoxy(thing as water almost) it sucks this up like a sponge and turns in to a composite. Very good way of making fuel tanks. PET, ABS or other plastics won't combine with epoxy, while the woodfill acts like any wood and soaks it up and bonds superb.