Thanks to its metal frame, the Printrbot Simple is a sturdy and reliable 3D printer perfect for rapid prototyping.
One downside to this is the lack of traction when it is on solid surfaces, and fast prints can cause a lot of sliding.
Without a way to secure the machine, it could interfere with other equipment or fall to cause a range of problems.
Tilting is another issue with the Simple, especially if filament is mounted and the X-Axis Upgrade is installed.
Adding "Printr-Feet" to the frame prevents these issues, while also allowing more air-flow to the printrboard!
The solid bodies offer support and fit into rubber bases that provide plenty of friction between the hard surfaces.
These models are available for download with the links below, but send a message if you don't have TPU on hand
or if you want to make something similar!