Hi Simon,
All igus linear bearings are suitable for building 3D printers, they are used extensively, also you can utilise the drive systems that are produced by the polymer bearing experts. If you go to www.igus.co.uk and search 3D printer or 3D printing there is lots of information on there. if you need any help please ask, my email is rdumayne@igus.co.uk
I hope this helps.
Best regards
Rob.