About my printer


I use Rostock Mini Pro by 3DPrinterCzar since the end of May 2014. It’s my first 3D printer so I don’t have any prior experience in the world of 3D printing. I almost bought Printrbot Metal Simple
($539.00) on Amazon but shipping($76.83) and import fee($191.04) added almost 60% to the price when I got to the checkout and I just couldn’t afford it at that price. I live in Slovenia, small country in Europe so everything bought in US has additional high fees associated with it.
A few days later I almost accidentally found some mentions about 3DPrinterCzar (don’t remember where) and they were promising free shipping and zero import fees. So I got the delta style 3D printer for $459.00 USD versus Printrbot Metal Simple for $806.87 USD and now I am glad I made that choice.

Rostock Mini Pro

Rostock Mini Pro

Rostock Mini Pro Technical Details:

  • Build Volume: 18cm x 18cm x 25cm cylinder
  • Electronics: RAMPS 1.4
  • Heatbed: No (PLA is the recommended filament)
  • Extruder: Bowden extruder set up with planetary gearbox coupled Nema 17 motor , 605 bearing

Included in the Rostock Mini Pro Kit:

Mechanical:

  • 8mm hardened precision rod (49cm) x 6
  • GT-2 belt and 36-teeth pulleys x 3, 3×2 608zz bearings on top,3×2 LM8UU bearings on carriages
  • pneufit push-in fittings for bowden extrusion x 2
  • 3K carbon fibre hollow tubes x 6
  • Traxxas 5349 u-joints x 12

Electrical:

  • Assembled RAMPS 1.4 w/ 4 Pololu steppers 4988ET
  • included 12V 10A laptop power charger, it died after a month, replaced it with 480W ATX power supply
  • Nema 17 motors with 0.55 N*m torque x 3 (42HS4813A4, 1.8 1.3A SUMTOR)
  • Nema 17 motor coupled with a 5:2:1 planetary gearbox
  • J-head MKIV hotend (0.4mm orifice, 1.75mm filament opening)

Software I use:

Settings you will need for Tantillus Calculator:

  • Step angle 1.8 (200 per revolution)
  • Belt pitch 2mm
  • Pulley tooth count 36
  • Driver microstepping 1/16
  • Resolution 22.5 micron
  • X,Y and Z axis steps per mm 44.44
  • E steps per mm 518

If you are going to use my Repetier firmware file on your Rostock Mini, you have to consider a few important settings and adjust them in Configuration.h to suit your build:

  • I have a 7 mm lower print bed than original, so you have to change Z_MAX_LENGTH setting(the default was 170, mine is 177)— THIS IS VERY IMPORTANT !
  • My carbon rods are not all the same length as they should be and so I adjusted one tower setting for that(DELTA_DIAGONAL_CORRECTION_C 1, default setting is 0)
  • My bed is warped so I adjusted PRINTER_RADIUS setting for that(this repairs concavity or convexity of the bed)

Please DO NOT forget to change these settings before you upload my firmware to your printer as I don’t want to be responsible for any damage the wrong settings can cause to your printer(especially Z_MAX_LENGTH) !