This instructable describes how to make custom silicone tires for a robot, connected together with an axle.
Materials for two tires, connected by an axle:
2 Dry Erase Markers (to use as a mold for the size of the tire)
Paper (for wrapping around the marker to prevent sticking)
Tape (needs to be removable, painters' tape will work well)
Popsicle Sticks (for molding and fashioning)
1 Axel (depends on the drive system of your robot, probably a wooden dowel will work)
Step 1: Prepare the 'mold' for the tire
Cut a paper strip to wrap around the marker.
Wrap the paper around the bottom of the marker, then wrap the tape around the edge of the paper.
This will create a mold to use for the tire and spoke shape, and prevent the Sugru from sticking to the marker.
Step 2: Make a tire
Wrap it around the paper.
Roll the marker on the table gently to help distribute the Sugru evenly on all sides.
Step 3: Add treadmarks to the tire
Step 4: Repeat steps 1-3 for second tire
Step 5: Remove (hardened) tires from molds
Carefully pull the paper off the marker, removing the tire with it.
Step 6: Attach tires to axel
Push an axel into the center of the wad of Sugru.
Note: we used a plastic knife because it was convenient, you will want to choose an axel you can drive with your robot. Possibly a wooden dowel.
Gently roll the axel and tires to make sure it's centered.
Allow 24 hours to harden.
Enjoy your custom-made DIY tires!