You will need to small rubber bands to power Fab Lab Tulsa Paddle Boat. I printed all parts at .15 mm layer height with no supports. Depending on your printer, you may need a brim to hold the hull securely to the build plate during printing to avoid warping. I printed "Post.stl" with 100% infill, and the remaining parts with 20% infill. I've included two hulls, "Hull .8mm.stl" and "Hull 1mm.stl". The .8mm hull will be slightly lighter than the 1mm, but is more difficult to print. With all parts printed, press the two "Post.stl" into holes in the top of the hull. Pull or push the two rubber bands through the axle hole in "Paddle.stl", one on each side of the divider. As can be seen in the photo, I made a rubber band puller from a paper clip to hook onto the rubber band then pull it through the hole. Once the rubber bands are inserted, slide the ends of the rubber bands over the posts in the hull. That's how I printed and assembled Fab Lab Tulsa Paddle Boat. Hope you like it!