Hi ATT470,

The Hyrel printer prints with pretty much any 1.75mm filament at 250C or less.

We have printed with NinjaFlex and PlastInk Rubber; customers have also printed with BendLay and Flex 45.

This same head also prints with ABS, HIPS, LayWoo-d3, PET, PLA, PP, PVA, Nylon, and T-Glase.

Other heads print in other materials (clay, PMC, Silicone RTV, PEG, etc.).

PM me if you have questions, or would like a skype/teamviewer session.

-Davo