I've made some progress on the Tortoise model today. The head and neck fit into a tube, I'm using a rocker in the base with an upright that locates in the neck to push it back and forth. This has required a lot of post-construction chopping. It has ended up rather untidy looking but the mechanism seems to work well. From this stage I can make measurements and make a few changes to the parts.
Next step, I'll be adding parts to the computer file and then printing out again and testing the Mk II version.
Please escuse the rather rough layout of the latest Workshop Notes entries, I'm making a few changes to the way things are stored in the main database – they'll look worse – then they'll look much better!