[Matterhackers] has a nice video tutorial on using vacuum forming to create plastic items. Sure, you have a 3D printer, but vacuum forming has some advantages if you are making thin and flexible items ...
The ergonomically friendly 2-liter bottle will be a manageable weight of about 20 pounds – the average weight of a watermelon – when loaded with stainless steel The X1 Powder Grip easily locks into ...