We have a PrintrBot Jr. Adjustments to the config is currently ongoing, to get it into a more usable state.

Maybe good quick reference: http://www.instructables.com/files/orig/F7Q/XII2/HD4VF40M/F7QXII2HD4VF40M.pdf

A list of improvements that would make the printer even more awesome.

Things to print:

• Z-axis screw holder: http://www.thingiverse.com/thing:78023 mchro has openscad file for parametric hex nut size
• Fan duct - new fan mount?
• New Z-axis holder. http://www.thingiverse.com/thing:64738 mchro has openscad file for parametric spring size
• Filament guide for extruder: http://www.thingiverse.com/thing:35799
• X-axis tensioner: http://www.thingiverse.com/thing:82388 or other variant?

http://hardwired.cc/?p=335

Upgrade belts to GT2.

Needs:

• 1m x GT2 Timing Belt (http://3dnielsen.dk/mekanik/107-gt2-timong-belt-pr-1-meter.html )
• 2 x GT2 Timing Pulley (http://3dnielsen.dk/mekanik/85-gt2-timing-pulleys-for-reprap.html )

Various:

• A couple of extra ball bearings (http://3dnielsen.dk/lm8uu/15-lm8uu.html )
• Motor dæmpere (http://3dnielsen.dk/nema-17-motor/110-motor-daemper-laser-skaret-1stk.html )

http://www.thingiverse.com/thing:64738

Needs:

• M8 threaded rod (http://biltema.dk/da/Byggeri/Befastelser/Gevindstang/Gevindstang-rustfri/Gevindstang-rustfri-19336/ ?)
• M8 brass hex nut (messingmøtrik)
• Diverse

Also, Z-axis screw holder: http://www.thingiverse.com/thing:82896

A PCB-Milled heatbed.

• http://www.thingiverse.com/thing:15082
• http://www.reprap.org/wiki/Heated_Bed#Milled_PCB_as_a_heating_Element
• Maybe: http://www.thingiverse.com/thing:63039
• Needs: Double-sided PCB, 3mm glass

A cheaper/simpler alternative might be an acrylic bed, see http://hardwired.cc/?p=335

http://hardwired.cc/?p=335

New (extra) gears, better drivetrain.

These are for 1.75mm filament http://www.thingiverse.com/thing:90335 http://www.thingiverse.com/thing:96178

This one is for 3mm filament http://www.thingiverse.com/thing:66337

Maybe shop at http://www.fittings.dk/

• J50000604 Teflon Tube 50m · PTFE, 6/4
• EC80K-0614 Push-in hex Nipple · BR, 6 × 1/4“