Designed to hold the direct extruder and an induction sensor for my prusa i3. Made in onshape.com Versions: Extruder, This is the generic version, shims/spacers will be needed on the motor to make the hole line up, the hole is for 1.75mm filament ExtruderV2, This has been modified for http://www.ebay.co.uk/itm/3D-Printer-Filament-Feeder-Extruder-Feed-Upgrade-Fit-Nema-17-Motor-RepRap-/191449385041 without the need for shims, the hole is again for 1.75mm filament Clamp is compatible with both versions If there any any requests for I will do a 3mm version. Once I have it printed and running I will make a fan mount for it, the back of the clamp screws will be the mounting point. Thanks for looking.Print one extruder and one clamp, (I'm going to print the part studio as one piece to see if that will work, I will report back UPDATE: Yes it printed fine as one piece.) If you printed the original version then space out the motor with washers or spacers so that the hole from your direct feeder lines up with the centre of the hot end.