Step 1: Stuff you'll need
Plastic sheet, I bought 2 chopping mats at the dollar store for 1.50 $ and that's the biggest expend of the project. It looks like PETG but I'm still not sure about this. The important thing to look for is the ability of folding the plastic without breaking it (polymer toughness). I was looking for a black plastic but I still didn't find anything available in small quantity in stores, that's why I decided to go for these transparent chopping mats.
Metal bracket used to attach a bike rack.
2X Bolts and nuts ready to fit on a bike rack.
- 2X Washers.
Step 2: Unbend the metal bracket
2 - Bend your metal piece in a similar radius of your wheel. Think about the offset and make it a little bigger.
Step 3: Print the template
Step 4: Cut the shape
2 - Fix your chopping mat on your template and the cutting mat.
3 - Using an Exacto, cut the main shape by following the exterior line
4 - Cut the 4 little triangles as shown on the picture