2015-12-07 (M) Rubber Stamps From 3D Printer

The mold previously used was a mirror image and should not have been mirrored. Hot water was used to “erase” the eraser and return its original shape. Soaking the eraser in hot water for five minutes was enough to reset it.

Erasing an eraser

Faint imprints were visible on the eraser’s surface but should not interfere with the final quality of the stamp.

Eraser after reset 

The first mold, which was mistakenly considered unusable, was recovered. This was good news since the procedure was simplified and doesn’t require that the image be flipped on the X or Y axis. Importing custom images should be as simple as printing a flat base with an image directly removed from it.

Correct mold

A recognizable image, the Instructables robot, was downloaded and converted to a PNG file. PNG files are a common file and importable by OpenSCAD.

The surface() command was used to import the robot image and the scale() command was used to size it. No other commands were necessary. Changing the scaling on the Z axis will determine how deep the stamp is. This was a matter of guess work.

 Changing the Z axis scaling factor

Proportions of the imported image can be seen below. This image reflects the effect of using no scaling. The results are impressive and show that a simple image can easily become a stamp with minimal effort.

Raw import of robot image


To do:
  • Reverse image on stamp
  • Create stamp from other format
  • Make usable stamp
  • Test
  • Publish on Instructables

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.
Completed projects from year 2

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2015-12-01 (Tu)