In this Instructable I will show you how to create your own inkpad stamp using 3D printed handles as the base.
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Step 1: 3D Print Your Stamp Handle
In order to do do custom sized stamps 3D print the stamps. Using this model http://www.thingiverse.com/thing:47966 and OpenSCAD a base for the stamp with a handle can be crated to any size you would like. If you are not comfortable writing code in OpenSCAD you can also use this model and scale it to your needs. http://www.thingiverse.com/thing:5676.
View 3 different stamp handles being printed based on three different sizes modeled in OpenSCAD
Step 2: Prepare Your Sugru
This part is really quite easy. Roll the Sugru in your hands until it is about the shape of the stamp base. Push it onto the stamp until it is evenly distributed.
It is OK if excess goes to the edges. It can be trimmed later with an exacto knife. I recommend that you push the stamp with the fresh Sugru onto a flat surface in order to make the bottom nice and evenly flat.
Step 3: Create Stamp
You can create the stamp by removing areas using a pencil or pen and drawing on the Sugru. This works pretty good but be sure to wait until it has cured before using the stamp.
I found that it is better to use a new piece of Sugru, roll it out to the approximate shape of the stamp and with an exacto knife cut out the shape or image you would like to see stamped.
You can also add items to the stamp by pressing into the Sugru and when it cures the item should be secure. Be sure your item has a lot of texture and will be able to handle in the ink providing an effect you find acceptable.
Step 4: Start Stamping
Using an ink pad found at pretty much any craft store, you can start stamping away.