Mini Macuahuitl

thingiverse

This device is a miniature replica of an ancient tool used by Mayans and Aztecs. It was traditionally crafted from wood with razor-sharp obsidian chips embedded within. The purpose of this instrument must have been to cut through dense jungle underbrush. Printing Instructions: Print 2 copies each of the following files: Macuahuitl_handle.stl Macuahuitl_blade_lower.stl Macuahuitl_blade_upper.stl Macuahuitl_blade_inlay.stl Also, print 12 copies of utility_blade.stl. The utility blade file consists of two halves that should be glued together. It's recommended to use a layer height of .12 or lower when printing this file. Be cautious when removing the parts from the print bed as they are thin and can be easily damaged. When both halves are glued together, the blade becomes much sturdier. Alternatively, you can use real utility blades (not recommended). To complete this project, you will need: A 5mm x 12 mm x 375mm piece of hardwood or metal for the center support shaft Epoxy or a strong adhesive Printer Settings: Print Brand: RepRap Printer Model: Prusa I3 Rafts: Doesn't Matter Supports: Yes Resolution: .2 mm layer height for handle and blade sections, .12mm layer height for blade inlay Infill: 25% Notes: The handle and blade sections were printed at .2 mm layer height. The decorative inlay section had to be printed at .12 layer height or the detail would be lost. If you're using Slic3r, uncheck the 'Don't support bridges' option for the blade sections as it tries to bridge the grooves on the edges of the blade and makes a lot of extra cleanup. The razor.stl file should be printed at .12 layer height or lower. This file contains several halves that need to be glued together. Post-Printing Instructions: Assembly: Cut a 5mm x 12 mm x 375mm piece of hardwood or metal for the center support shaft. Arrange the handle, lower blade, and upper blade sections face down. Apply epoxy into the center groove and insert the center support shaft. Clamp and allow to dry. Epoxy the utility blades into the grooves on the sides of the lower and upper blade sections. Spread epoxy over the surface of the other three sections and place them opposite the already assembled sections. Clamp and allow to dry. Epoxy the blade inlay pieces on either side and clamp to secure.