3D printing allows us to create unique parts, from cool figurines to intricate industrial models. However, 3D printers have limitations. Most entry-level 3D printers work by extruding material, which comes with challenges when producing parts with extreme overhangs, arches, or shallow angles. Supports are necessary to print these geometries effectively.

So, how do you know when a print needs support? It varies depending on the printer and the layer height of the print. In most circumstances, supports are necessary when printing overhang angles over 45 degrees. At this point, layers may begin to deform and warp without help from underneath. As the sidewalls of the print get closer to vertical (0 degrees) or overhangs get near 90 degrees, each layer is already supported by the layer below, so no additional support is needed.

Start with an Overhang Test

Performing an overhang test is a good way to find out what types of angles your printer can successfully create without using supports

Here is an All in One object to test the range and capability of your printer

All In One 3D Printer Test with real supports