Revised from ASTM Tensile Test Specimen @ thingiverse.com/thing:13694The change for this specimen is an added cylinder on one corner to create a starting/end point for the layers. This tensile specimen is for a current research project & is associated with benefits for anyone who wishes to collaborate by contributing sets of 10 of tensile specimen.This a specimen for tensile testing in accordance with ASTM D638 "Standard Test Method for Tensile Properties of Plastics". It is a Type 1 specimen to be made from rigid plastic.Tensile testing of RepRap printed specimens is being performed at the Michigan Tech Open Sustainability Technology Research Group http://www.mse.mtu.edu/~pearce/Index.html. Specific information about the testing can be found here www.appropedia.org/Mechanical_testing_of_polymer_components_made_with_the_RepRap_3-D_printer.Needs to be rotated 90 degrees to fit on most build platforms.