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Solidoodle 2
Current setup
- Solidoodle 2 Pro
- Stock Sanguinololu v1.3a controller board
- PWM output added for part-cooler fan
- Original Pololu A4988 stepper drivers swapped for Pololu DRV8825 type
- Added a 60mm fan to keep the stepper drivers cool
- Removed the top cover – this no longer fits due to the addition of the cable chain and Y-axis direct-drive mod.
- Z-axis "Nut-hugger" Z-wobble prevention mod (soon to be replaced with a proper trapezoidal leadscrew)
- Bed alignment thumbscrews with M4 nuts – massively simplifies bed levelling
- Lawsy carriage kit with LM8UU linear bearings and extruder fan duct (with 12V 30x30x10mm fan)
- Lawsy-Wardjr-Mdroman extruder mount – replaces the Solidoodle “jigsaw”. Variant of the Lawsy Mk5 mount.
- E3D v6 all-metal hotend, 1.75mm direct-feed
- E3D HobbGoblin, 5mm ID extruder drive gear
- Lawsy lowered Z-screw to account for the height of the E3D extruder
- … Actually, I machined a version of the Lawsy screw out of aluminium, because the plastic one broke :(
- Keenovo 120W silicone bed heater element with internal thermistor
-
- Soon to be replaced with a commercial cable-chain
- Y-axis direct-drive mod (3D model on Thingiverse)
- Next additions:
- Belt clamps to reduce the risk of the Y-belt breaking at the screw-holes
- http://www.soliforum.com/topic/2361/all-bearing-y-axis-conversion/ – All-bearing Y-axis
- http://tomhorsley.com/hardware/solidoodle/solidoodle-ybearing.html – Y-axis bearing support with SFL686ZZ flanged bearing
- Considering:
- Improve filament feed
- https://www.thingiverse.com/thing:2047554 (TUSH / Ultimate spool holder)
Motors
Per SoliWiki's list of compatible hardware:
Axis | Motor |
---|---|
X | SM35HT36-1004A NEMA-14: Single shaft, 1.8°/step, 2.0V 1.0A, 19 Oz-in (1400 g-cm) holding torque, 4-lead |
Y | SM42HT33-1334A NEMA-17: Single shaft, 1.8°/step, 2.8V 1.33A, 30 Oz-in (2200 g-cm) holding torque, 4-lead |
Z | |
Extruder |
I replaced the stock Y-axis motor with one from WeDo3DPrinting when I fitted the direct-drive mod. I did the same with the X-axis motor when I replaced the carriage.
Sanguinololu configuration
Microstepping
The microstep jumpers are located under the driver boards. See this for a photo.
Installing a jumper sets the given mode line high. Removing it sets the mode line low.
Microstep settings with the default A4988 drivers:
MS3 | MS2 | MS1 | Microstep resolution |
---|---|---|---|
0 | 0 | 0 | Full step |
0 | 0 | 1 | Half step |
0 | 1 | 0 | 1/4 step |
0 | 1 | 1 | 1/8 step |
1 | 1 | 1 | 1/16 step |
Microstep settings with the DRV8825 drivers:
MODE2 (MS3) | MODE1 (MS2) | MODE0 (MS1) | Microstep resolution |
---|---|---|---|
0 | 0 | 0 | Full step |
0 | 0 | 1 | Half step |
0 | 1 | 0 | 1/4 step |
0 | 1 | 1 | 1/8 step |
1 | 0 | 0 | 1/16 step |
1 | 0 | 1 | 1/32 step |
1 | 1 | 0 | 1/32 step |
1 | 1 | 1 | 1/32 step |