@oliof
Hi,
Thank for your information, I have check a lot of videos, tutos, and other CR-30 informations.
I will update the printer with NAK3D motors mount, allready ordered and a replacement Belt. It's same belt material seen on Ideaformer 3D Belt printers. So I hope better than the original one.
I see the linear rail kit from NAK3D, but it's expensive and not sure about quality for long time use, I will do same kind of kit by myself with HIWin linear rail.
For the nozzle system, I think I will try with the original at the bigging, and switch with orbiter system or similar after first custom step...