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Geoffrey Forest
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I have a D-Bot build, 300x300 build area. I recently printed a part that was about 200mm square, and I noticed that it was slightly skewed, so its a very slight parallelogram, maybe 1mm off from the front corner to the back. I assume my two XY motors are not moving exactly the same, but I'm not sure how to tell which one is off. Is there a good way to isolate this? Other than just calculating the offset and try changing one motor? I suppose it would either fix it or make the error twice as pronounced. 

I accidentally swiped to delete a message thread, and the undo button disappeared before I could hit it. I don't see a trash or any way to recover the message, so I guess that thread is gone? I just found the setting to turn off swipe to delete.

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You guys with an aluminum bed, do you get sounds like this when moving the bed up and down? I've got a 1/4" mic-6 plate attached right to the z carriage, with a silicone heater stuck to the underside. My lead screws seem to make a lot of noise when moving the bed up and down and I'm wondering if its the aluminum bed amplifying the sound. I have a prusa i3 style printer with lead screws on the z axis and it is silent. Its only moving the x-carriage up and down though.

I did note, my lead screws on the prusa i3 had really smooth threads. The screws I got for the D-Bot seemed to have some somewhat sharp edges on the threads. I used a scotchbrite pad with some grinding paste to smooth them a bit, and it made a difference by feel.

The screws are well oiled. In the video, I lower the bed by 10mm three times, then home z. The sound is grating on me. I'm considering these delrin nuts:
http://www.ebay.com/itm/Delrin-Anti-Backlash-Silent-Nut-for-8mm-T8x2-Lead-Screw-Trapezoidal-ACME-/322207699948


New to Smoothieware here. I just received a Re-Arm board and am building a D-Bot. I'm having trouble with homing. The D-Bot homes Y to max, which is what seems to be giving me trouble. I've got Alpha, Beta, and Gamma endstops working correctly (checked with M119). X homes correctly (to min). Z homes correctly (to min). I can then move manually away from X and Z endstops with host software. Y homes to max fine, but then Repetier says printer Y axis is at position 0 (instead of 300, which is the defined max in config). If I try to move away from Y max endstop, the print head moves all the way to the actual Y 0 (all the way across the print bed, and I can't stop it), then I can move it normally in manual mode. Is this normal?

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"... maybe if the Galactic Senate hadn’t defunded Planned Parenthood, the Republic wouldn’t have succumbed to an evil fascist dictatorship."
Uteruses: How do they work?

Apparently, nobody in the Old Republic was capable of adequately answering this question. In fact, Sarah Jeong makes a good argument that the inexplicable lack of qualified OB/GYNs in this galaxy was a major contributing factor to the collapse of the Old Republic and the Jedi order.

Given that they nonetheless had medical droids and bacta tanks, and prosthetics nearly indistinguishable from the original limbs, the only explanation I can think of is that uteruses are powered by Magic Beans which are somehow impervious to medical technology. 

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