Chainplate pads

This doesn't seem to be too difficult to make but still it helps if you find a simple, fast and effective way to get there.

This is how I did it.

First I traced the curvature on the foam blank using a strip of foam.

Then I cut some slits with a metal hand saw as a guide for the amount of foam that had to be planned off.

Finnaly used a small hand planner to cut the foam to the desired shape. For better results the planner should be driven into the foam at a 45º angle.