This is the specimen to make mechanical testing. You can choose the material you want. Sizes are under international standard ASTM. The following links are a two test that I have done with PLA cooper. In the video you can see the difference on mechanical properties for this material printed with 0.4mm nozzle and 1mm diameter nozzle. at 100%infill I have the raw data if you are interested. I am planing to do more test with different 3d printed materials, differents infill percentages and pattern.