Multi thread cutting

You can get a 3d printer much cheaper than that if you don't mind assembling it yourself - Home - RepRapPro from £400ish. Or look for Mendel90 (a better design).

The z axis doesn't need a ballnut because gravity (and a spring) takes out the backlash. I have a RepRapPro Mendel and it seems pretty crude but produces quite reasonable results - the Mendel90 is much more rigid and I would expect very good results from that.

Bound to have been done before. It is good to know what they are called anyway.
Cheers,
Rob

Hi, Thanks Fat Freddie.

The Velleman Kit requires assembly anyway. On first glance I like the Mendel90 especially with the Dibond frame.


Cheers,
Rob