![]() ![]() Four kg of PLA is quite a bit.Ī couple coats of filler primer fills in any minor imperfections. The resulting finish was smooth enough for the primer.įully assembled, the heft and size of the puzzle was unexpected. The rails were sanded smooth using 240 grit followed by 400 grit. ![]() It’s critical to allow the putty to fully cure before starting to sand. Originally, I had planned to add a strip of fiber glass to make the rail stronger, but testing pieces showed it wasn’t necessary.Īfter a few coats of epoxy, the rails were allowed to cure for 48 hours.Ī layer of glazing putty filled in any low spots and layer line inconsistencies. The frame rails were coated in Total Boat High Performance Epoxy. Since this was a presentation piece, it would require reinforcement as well as a high-quality finish. This closeup of the rail really slows the layer lines and minor imperfections, which isn’t great for a presentation piece.Ī test fit with 4 of the puzzle pieces shows the slight color mismatches from different spools of filament. This makes it impossible to assemble incorrectly. I designed the hole pattern on each rail to be specific for one side of the assembly. Heat set inserts provide the threads for the socket head screws. It was at this point the size of the puzzle really hit me. The frame was square after the straightening process. A quick blast with a heat gun to soften the PLA allowed the rails to be straightened. The frame rails came out less than 1mm out of spec on the length but were slightly curved. Each frame rail took about 30 hours to print in PLA.Īll 15 puzzle pieces and the 4 frame rails took over 10 days of continuous print time and used over 4kg of filament. Naomi Wu did a great job getting this printer out and the quality is excellent. The frame rails, being nearly 700mm long, required the use of the new Creality CR-30. Everything was printed in MatterHackers Build Series PLA on my Railcore II. The first few pieces printed with no issues, but the large area makes it very sensitive to any issues with the first layer. There is about 1mm of built-in tolerance for all the pieces. The frame is held together using socket head screws. The dimensions of the assembled puzzle is 682mm by 682mm. The frame pieces replicated the projects and cutouts, making all the pieces fully captive in the puzzle. When assembled the projections ride in the cutouts, allowing movement in one axis but captive in the other. The 45-degree angle allows for the puzzle piece to print with minimal supports. Two sides have 45-degree cutouts and the other two have 45-degree projections. I started the design with a tessellating square that was 152mm by 152mm. The individual pieces slide along other pieces and are captive. It's like those sliding puzzles you got a child but much larger, about 680mm by 680mm. My sister recently release a kids book called Baby Snack Time and wanted a giant sliding puzzle as a promotional tool. When people find out you have a 3D printer, one often gets ask to print random things. Giant Sliding Puzzle Giant Sliding Puzzle
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