PET Bottom Cutter

Overview:I wanted to speed up the process of preparing PET bottles for making filament. One of the steps is to cut the bottom of the bottle. Using scissors is not very convenient and fast so I have designed this cutter which uses a snap-off blade. The blade is rotated by hand using a simple crank mechanism.The PET_Bottom_Cutter_Insert.stl is added for smaller bottles (1.5l) with diameter ~88mm. For these bottles it is beter to use the short version of the blade holder - PET_Bottom_Cutter_Blade_Holder_18mm_Short.stl.Here you can see how I'm using the cutter: Bill of Material:Base Plywood ~300x120x18 mm4x Corner_Protector.stl (Optional)4x Screw 2.5x12mm (Optional) Cutter 1x PET_Bottom_Cutter_Crank_Base.stl1x PET_Bottom_Cutter_Crank_Spacer.stl1x PET_Bottom_Cutter_Crank_Handle_Distance.stl1x PET_Bottom_Cutter_Crank_Handle_Arm.stl1x PET_Bottom_Cutter_Crank_Handle.stl1x PET_Bottom_Cutter_Blade_Holder_18mm_Long.stl or PET_Bottom_Cutter_Blade_Holder_18mm_Short.stl1x PET_Bottom_Cutter_Socket_Wr