Lathe 0.9b - is a simple 3D modeler for Newton OS devices. A template, specified in 2D, is "lathed" to create a 3D wireframe model. Lathe was developed on an MP2K and the performance on that device ranges from great to acceptable (depending on the model complexity). Unfortunately, I don't have direct access to an older Newton but a friend who tested it for me indicated that it was somewhat slow on an MP120. For MP120 and MP130 users, your best bet is to keep your models as simple as possible. The 3D-view is the main area of interest in Lathe. This is where the model is displayed. If you tap your stylus within this view and drag it around you can rotate the model in real-time. On Newton devices which support grayscale, model segments which are further away will be drawn with successively lighter shades of gray.