petpull bottle cutter remix petg pet petb

thingiverse

6203 ZZ bearings. If you are pulling and cutting bottle best option is to make bottle as cylindrical as possible, then cut bottom and top of bottle. By hand i did not need to cut top part of bottle, because i had more control over cutting process. Bottle pet in Balkans ( Bosnia) is best printed at 290 cesius hotend and 70 celsius hotbed. Some times you have to drye filament after extrusion. This design is best for cutting pet bottles, but i had some problems with it after using it so i decided to do remix and fix things that ware making problems for me. First i added front screw hole in "postavka" because when cutting bottle strip was cutting exit of "postavka" and that made cut strip have different height. Next I over sharped bearings and they did not make good contact (sharped surfaces ware not touching) so I made bottom bearing spacer modular (6mm is height in original design I needed 7mm). Last problem was that i had threaded rod (6mm used for this design) standing at 90degres and weight that was pressing bottle on "postavka" , that was problem for me because it did not do good job in making constant height of strip. So I added bottle guide at angle of 20degress towards upper bearing which makes pressure to side of "postavka" and is pressing it on "postavka" without any weight on top of bottle, strips that I got were constant after that as seen in Post-Printing pictures. Program used was Free-Cad with Part , Part-design and Mesh Workbench I uploaded those files so you can edit them to your needs.