PetPull bottle cutter remix petg pet petb

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6203 ZZ bearings.

The best way to pull and cut bottles is to make them cylindrical, cut the bottom, and strip them to the top. Because I had more control over the cutting process, I didn't need to cut the top part of the bottle by hand. The ideal temperature for printing bottle pets in the Balkans (Bosnia) is 255 Celsius at the hot end and 80 Celsius on the glass hotbed. This plastic requires a 0.1–0.05 offset breading space to avoid squishing into a glass bed.

After pultrusion, it is mandatory to dry the filament.

This design is ideal for cutting pet bottles, but I encountered some issues after using it. Therefore, I decided to revise and address the issues that were causing me trouble. Firstly, I incorporated a front screw hole in the "postavka" because, during the bottle strip cutting process, I accidentally cut the exit of the "postavka," resulting in a discrepancy in the strip's height. Next, I oversharped bearings, and they did not make satisfactory contact (sharped surfaces were not touching), so I made the bottom bearing spacer modular (6 mm is the height in the original design; I needed 7 mm). The last problem was that I had a threaded rod (6 mm used for this design) standing at 90 degrees with a weight pushing the bottle on "postavka." That was a problem for me because it didn't do a good job of maintaining the strip's constant height. So I added a bottle guide at an angle of 20 degrees towards the upper bearing, which puts pressure on the side of "postavka" and presses it on "postavka" without any weight on top of the bottle. The strips that I got were constant after that, as seen in the post-printing pictures. I utilized the program Free-Cad, which included parts, part design, and a mesh workbench. I uploaded those files so you can edit them according to your needs.