I have uploaded some components to a 3D-Warehouse collection for MacTavish at Models by MacTavish - 3D Warehouse Search

- 45x90 Heavy KJN extrusion - new improved (cleaner/fixed) version

- 45x45 extrusion which is not accurate internally but I think is accurate externally

- Ballscrew assembly for RM1605/RM1610

These are certainly not perfect, but am sure they can help others get started in the same way that JCB121's components helped me get started.

Cheers,