Notes: The notch in the Inner Rim Template is one centimeter square. It is located anywhere left of the the centerline of the Inner Rim Template.

Using the above Inner Rim Template, as it appears, will make a LEFT spin wheel. The Outer Rim Template as seen above will make a RIGHT spin wheel. Flip one of them over before using them to mark lines on the rims.

On my templates, I go so far as to mark one side LEFT SPIN in blue and RIGHT SPIN in red so there is little doubt as to which way they go.

Again, I can't emphasize enough, marking one Rim with the LEFT spin side up, and the other Rim with the Right spin side of the Template up will yield a Wheel that will inflate just fine, but won't spin. Yes, it has been done.

If you are making a 48 Cell Wheel, the Riser is 14 cm on top and 7 cm on the bottom. The Inner Rim template is 10 cm, and it uses tht same Oter Rim Template, 13 cm.