SummaryCartesian Dual 3D Printer. Z axis with two motors and lead screws Ramps - Mega2560 - 5xDRV8825 - LCD 12864 - ATX PSU 6 Nema17 motors 2 Mechanical End-stops Lead Screws 8mm Pitch 2mm 2x Spring coupler 5 x 8mm Gt2 Belt Pulley 20 tooth Gt2 4x 608rs Bearings MK3 Aluminium Heat-Bed Extruder feed gear 40T OD11mm ID5mm About 320Euro MDF 12mm Pieces - Dimensions 2 x 450 x 450mm 2 x 100 x 450mm 2 x 100 x 426mm 2 x 450 x 500mm 1 x 120 x 450mm 1 x 346 x 450mm Cost 9.40 Euro If you change the 2 pieces of 450 x 500mm to 450 x 515mm you will gain more Z height. At 12mm wood that hold the motors of extruder need to do it 6-8mm thin or to cut a slot where the motors connect with wood. I have a CnC so i make it easy, a thinner wood is ok too. I am still thinking how Z axis endstop/height will be.. Dual Bowden extruder system with homemade hotend (still not complete/not tested). Print build volume 200 x 200 x 187 with some changes can get more about 10mm. Like thinner bed wood supporter, smaller springs. For now everything work great except hotend that not tested and sure need some modification. I have a temperature monitor for electronic compartment to see what going on in there. The *rar file is the firmware of Marlin i use and work, feedrates and acceleration must change to your needs and what motors you have.Print SettingsPrinter Brand: RepRapPrinter: SmartRapCoreRafts: Doesn't MatterSupports: Doesn't MatterResolution: 0.25Infill: 40Notes: PLA blue PET-G white just because i had it :) Very few supports if needed.Custom SectionA small test of movement..