by Bob_East, published
I was bored one Sunday, and was looking for a quick project. I found plans for a putt putt boat and started making it. Part way through, I realized the milk carton I cut in to a boat shape was no longer waterproof. I later cut a boat shape out of an old protein bottle. Long story short, I wanted a boat like the putt putt boat directions, so I designed one.
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This can be printed with or without support material. If you print it with support material, only do exterior, because the inside would be hard to scoop out.
I printed it without support material, but it required a little bit of cleanup inside and a little on the bow. I also printed it with 2 shells and 10% infill.
To build the engine, the instructions can be found here: http://www.sciencetoymaker.org/boat/
Once the engine is assembled, they can be fastened to the boat with a twist tie. It would also be a good idea to cover the straw hole and twist tie holes with some two part epoxy. The tea light can be held in place with a loop of tape, or double sided tape.