Rosalind-bill-of-materials

Bill of materials

Printed parts

• y axis clamps
• angle fasteners

Printer Frame

• Four pieces of T-slot aluminium profile length: 400.
• Eight pieces of T-slot aluminium profile length: 360.

Enclosure

• A sheet of acrylic 360 x 360Z x 3 mm (for the back).
• A piece of plywood 400 x 400 mm (for the bottom).
• 360 mm self-adhesive led strip.

Vitamins

Rods (usually steel)

• Two rods Φ8, length: 380.
• Two rods Φ8, length: 352.
• 2 (Two for now) rods Φ8, length: 390.

Bed

• Two pieces of 20 mm wide T-slot aluminium profile length: 250.
• 1 of 20 mm wide T-slot aluminium profile length: 133.97
• One piece of 2 mm thick glass, size: 214 mm x 214 mm.
• One piece of 5 mm thick wood size, size: 257.665 mm x 214 mm.
• One 12V pcb heating element, size: 214 mm x 214 mm.
• Two springs 0.8x6x20 (make sure the springs fit your bed screws; if you need to go bigger, go!).
• One 8 mm leadscrew of length 300 mm.
• One 8 mm leadscrew nut.
• Four bulldog clips thick enough to clamp 15 mm.
• One thermistor compatible with Marlin :electronics:

Visit the following link to check all supported thermistors https://github.com/MarlinFirmware/Marlin/blob/1.1.x/Marlin/Configuration.h#L261

Screws and Bolts

• Enough M5 in all lengths between 8 and 20mm (around 100 in total).
• Enough M3 in all lengths between 10 and 50mm (around 200 in total).

Rest

• Six 3 mm bore, gt2, timing idlers for 6mm belt width (20 teeth).
• Two 3 mm bore, gt2, timing idlers for 6mm belt width (toothless) or four 623zz flanged bearings.
• Two 5mm, gt2, timing pulley for 6 mm belt width (20 teeth).
• Two 5x8 mm flexible couplers.
• 4 LM8UU linear bearings or 1 of them if you use the long variant LMxLUU (z-axis).
• Four LM8UU (y-axis) (two for the long variant).
• Four LM8LUU (x-axis) (two for the long variant).
• One 608ZZ bearing.
• One extruder drive hobbed pulley MK8.
• 400 mm bowden (PTFE) tube.
• One brass PTFE tube push-fit connector.
• Three end-stop microswitches.
• One e3d extruder assembly.
  • One 30Watt heating element.
  • One 100K Ohm thermistor cartridge (semitec 104gt2).
  • One 30mm fan.
  • One heatsink.
  • One aluminium heating block.
  • One 0.3mm brass nozzle.
  • One stainless steel heat break.
  • One silicone sock.
• One 40mm, 12V fan.

Electronics

• One arduino MEGA (a small 8-bit, single-purpose computer).
• Four motor drivers.
• Three NEMA17 motors (minimum 20 Ncm torque).
• One NEMA17 motor (75Ncm torque) (this is for extruder drive, direct; for a geared extruder drives 40Ncm should be enough).
• One ramps shield.
• One LED power supply unit (12V).
• A USB extension cable (to connect the 3D printer to a computer).
• Cables* (we need lots. we need to research on required gauge. we will need all colors. - 22awg 0,34mm).
• 4pimN-4pinM cables for extension (enough, of sufficient length).
• 3pimN-3pinM cables for extension (enough, of sufficient length).
• 2pimN-2pinM cables for extension (enough, of sufficient length).
• One RePraDiscount smart controller.

Consumables

• A spool of PETG filament.

Improvements

• 24V power supply
• 2 mosfets
• one power plug
• one power switch
• one raspberry
• one camera
• one SD card
• a KVM (no redundant USB cable)