Well it looks like things are coming together as far as the task of gathering parts for the McWire RepStrap. I saw a tweet last night from MakerBot say that the Gen3 electronics were in so I jumped at the chance to get them on order. I've still have to get to the hardware store to get the structure, U channel and aluminum angle.
I have a nice piece of MDF that came as packing from our new dishwasher so that might be recycled for the sleds. I'm also thinking that acrylic sled would be nice as it shows the mechanics of the sleds. I'm sure the RepStrap will be a great show and tell item for all those who see it. You can also see if something has become loose within the sled drive.