Rapman 3.1 3D Printer

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Supplier: Bits From Bytes
  • Supplier: Bits From Bytes
  • Starting Inventory: 1
  • Model: 3.1.0
  • Serial Number: S2033536
  • X Axis: 270mm (10 ⅝ inches)
  • Y Axis: 205mm (8 inches)
  • Z Axis: 210mm (8 ¼ inches)
    • Please note print size will vary from build size and is dependent on print material specifications
  • Z Axis Resolution: 0.125mm (0.005 inches / 125 microns)
  • Print Tolerance:
    • x and y axis +/- 1% of object dimension or +/-0.2mm (0.008’’ / 200 microns) whichever is greater.
    • z axis +/- half the processed z resolution
    • Shrinkage and warpage can occur on models and is material and geometry dependent.
  • Print Speed: Extruded Volume Maximum 15mm (9/16th") per second print and polymer dependent.
  • Power Requirements: 60 Watts (5A @ 12V)
  • Approx. Weight: 17kg (37.5 Lbs)
  • Overall Dimensions Excluding Extruder: 650mm (w) x 570mm (l) x 510mm (h)
  • Overall Dimensions Including Extruder: 650mm (w) x 570mm (l) x 820mm (h)
  • Maximum Extruder Operating Temperature: 280 C (536 F)
  • Install the extruder head pressure bearing correctly. I had it installed inside out, which caused the filament not to feed into the heating element of the extruder head.

Code 14 Error (the heater is taking too long to get to the required temperature)

  • The two grey wires should read back a value of 4.5 to 5.5 ohms and the two violet wires should read some where around 200 to 300 k ohms, this value changes with temperature so it may not be an exact reading.

There are various causes:

  • Noise on the signal from the thermistor.
  • Problem with the actual thermal conduction inside the head.
  • Connections dirty or resistive somewhere in the wiring.
  • Head resistance too high (too much wire when building).

Hotend Replacement

I replaced the original hot end with a Reprap Hotend 2.0, which required some modification of the extruder mounting plate. The hotend now sits higher from the print bed.

I decided to just replace the entire extruder. The dimensions of the stepper motor is 42mm x 42 mm.

Extruder Plate Modification

For 3D Printer Extruder MC3D For Reprap Hotend 2.0
RapMan 3.1 Extruder Plate Modification-SketchUp.png
RapMan 3.1 Extruder Plate Modification.svg

I utilized my ShapeOko 1 to cut out the extruder plate of 1/2" MDF board.

  • Purchased a Reprap Hot End V2.0 [1]
  • Purchased a SainSmart Mega2560 + A4988 + RAMPS 1.4 3D Printer KIT

SainSmart Mega2560 + A4988 + RAMPS 1.4 3D Printer KIT

  • Insert the Sainsmart RAMPS 1.4 Board into the female headers of the Sainsmart Arduino Mega 2560 R3 Microcontroller/
  • Insert the (5) Sainsmart A4988 Drivers onto the female headers on the Sainsmart RAMPS 1.4 Board. There is a driver board for:
    • Extruder E0
    • Extruder E1
    • X-Axis Stepper Motor
    • Y-Axis Stepper Motor
    • Z-Axis Stepper Motor


  • I loaded the Repetier-Firmware on the RAMPS 1.4 and was able to connect with the Repetier-Host software. --KietCallies (talk) 12:16, 30 March 2014 (PDT)
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