Curve Template
thingiverse
A template for longer curves (could be used for reflections on mechanical objects like world eating robots and such). The template also has a few squares and circles fore good measure and to save on printing material. Instructions Not much to say here, just print or cut and start drawing.
Download Model from thingiverse
With this file you will be able to print Curve Template with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Curve Template.