Chop Chop

We're working on the race car release mechanism — here, specifically, the method of resetting it for the next race.

A mitre-box is a big help for making accurate cuts.

This is what 68mm looks like.

Unfortunately, the rails which the cars straddle, have turned out not to have been cut to the size specified.  As you can see above, "68mm" has been interpreted loosely!  It has meant a stripping of the 3 lengths of track which had already been constructed and a return to the timber yard.  In the process, we've taken the opportunity to upgrade the rails to plywood which I expect to be much more robust than the MDF we started with.