ASTM D638-14 Type IV Tensile Bars - horizontal and vertical

These are the ASTM D638-14 Type IV (4) designs used in a study to compare Type I with Type IV using a ton of RepRap 3-D printers and users. You can read the full study: John J. Laureto and Joshua M. Pearce. Anisotropic mechanical property variance between ASTM D638-14 type I and type IV fused filament fabricated specimens. Polymer Testing 68: 294-301 (2018). DOI: 10.1016/j.polymertesting.2018.04.029 [open access preprint](https://www.academia.edu/36496554/Anisotropic_Mechanical_Property_Varianc