Graham writes – “The project began after considering building a really small machine much like Matt Keennon’s Microbat and deciding a better bet might be to use an existing rubber design as a basis for a larger model to start with. It seems great minds think a like as you will see in this thread here. After seeing that I sat down at the PC, made some design decisions and drew a few parts in Rhino to be cut out on my little CNC. “ Thanks Ben! – Link.