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21 ‪#‎3DBenchy‬ boats on a single 32-hour ‪#‎3dprint‬.
Read more at: 3dbenchy.com/?p=677
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X and Y stepper motors are Kysan 1124090. Available from Ultimachine. Like the Z stepper motor, these motors require more current than the standard Makerbot X and Y stepper motors. You will need to use modified stepper drivers.
Z motor, lead screw, and acme nut from Kysan. Part number is 1040094. Requires more current than the normal Makerbot Z stepper motor. You should use a modified stepper driver.
Thermistor circuit with CD-ROM audio connector wiring (MPC-2 connector).
For $5.60 US you can order three of these boards from OSH Park. That includes free shipping within the USA. Note that OSH Park always sells in units of three. The URL is
oshpark.com/shared_projects/HTTIQlfd
The sole required component (beyond the 100K NTC thermistor itself) is one 4.7K resistor which you can likely buy at a Radio Shack (Digikey S4.7KCACT-ND). The optional components are a 0.1 uF capacitor (Digikey 339-4151-ND), a MPC-2 connector (CD-ROM audio; Molex 0705550038; Digikey WM4177-ND), and a two position screw down terminal (Phoenix 1729128; Digikey 277-1247-ND).
Motor and idler brackets from www.thingiverse.com/thing:364426 .
Note removal of the upper corner brackets to make room for the idler brackets. Upper corner brackets may be retained if using the idler bracket from www.thingiverse.com/thing:252041
RepRap Mk2b dual voltage heater circuit board wired for +24V operation with a 10k ohm resistor and a red LED.
RepRap Mk2b dual voltage heater circuit board wired for +24V operation with a 10k ohm resistor and a red LED.
Motor and idler brackets from www.thingiverse.com/thing:364426 .
Note removal of the upper corner brackets to make room for the idler brackets. Upper corner brackets may be retained if using the idler bracket from www.thingiverse.com/thing:252041
My new Kossel is up and running! Finished it last night, cleaned up the wiring this morning. Prints great!
RepRap Mk2b dual voltage heater circuit board, reprap.org/wiki/PCB_Heatbed
For Replicator 1 firmware, the thermistor should have a beta(25/85) of about 4066K. For Replicator 2 and 2X firmware, a beta(25/85) of about 3974K. However, it's not critical: the deviations will likely be a fraction of a degree around 100C.
In this build, a thermistor from RioRand is used with a beta(25/50) of about 3950 is used. Available at Amazon as www.amazon.com/gp/product/B00GD471PO/ref=oh_details_o03_s...
Motor and idler brackets from www.thingiverse.com/thing:364426 .
Note removal of the upper corner brackets to make room for the idler brackets. Upper corner brackets may be retained if using the idler bracket from www.thingiverse.com/thing:252041