Book Image

3D printing with RepRap Cookbook

By : Richard Salinas
Book Image

3D printing with RepRap Cookbook

By: Richard Salinas

Overview of this book

Table of Contents (19 chapters)
3D Printing with RepRap Cookbook
About the Author
About the Reviewers

Using Stretch in Skeinforge

Printing circular holes that are correct in size is problematic for RepRap-based printers. There are a number of issues that can affect the printing of holes with diameters of 2 mm and smaller. One issue involves how the material is laid down while moving in an arc. When a nozzle extrudes while making a circle, more material is deposited on the inside of the circle than on the outside. This is because the inner perimeter of the circle has a slightly shorter radius than the outer perimeter. The difference in the radius size is determined by the width of the extruded line.

Skeinforge has a means to compensate for this problem by activating a plugin called Stretch. It's not a perfect solution, but it provides better results.

Getting ready

There's a handy hole calibration model that we'll need, and it can be downloaded from Thingiverse. You can find it at An assortment of M2, M3, M4, and M5 screws will be helpful in testing the...