Well, I'm ready to try printing... I think. I've actually downloaded a test object and sent it to the printer, and the printer is moving... but for some reason I've yet to fathom, when I feed an STL file to Pronterface, the GCode it spits out has all the extruder commands commented out. So I'm running a full pattern test print... with no extrusion. Still, I suppose it's a good shakedown for the machine.
I'm also having a problem where most of the STL files I've tried seem to treat the center of the bed as 0,0,0, as opposed to the negative limit of each axis, which my machine apparently does. So I keep getting GCode files with negative values in X and Y.
I've also had my extruder tube bust loose from the brass fittings twice, on each end. I'm pretty sure the plastic is getting weak in the threads. And I've had a couple of near-ruptures in the tube along its length, where the junction between two lengths of filament tried to bust out. I'm hunting about for a source of replacement PTFE tubing (2mm ID, 3mm OD), but not having a whole lot of luck so far (Grainger has some 2mm/4mm, but only in 25ft(!) lengths, at $75). Part of the problem is knowing what "brand" name to search for, since most catalogs won't be calling it "PTFE tube."
I'm also having a problem where most of the STL files I've tried seem to treat the center of the bed as 0,0,0, as opposed to the negative limit of each axis, which my machine apparently does. So I keep getting GCode files with negative values in X and Y.
I've also had my extruder tube bust loose from the brass fittings twice, on each end. I'm pretty sure the plastic is getting weak in the threads. And I've had a couple of near-ruptures in the tube along its length, where the junction between two lengths of filament tried to bust out. I'm hunting about for a source of replacement PTFE tubing (2mm ID, 3mm OD), but not having a whole lot of luck so far (Grainger has some 2mm/4mm, but only in 25ft(!) lengths, at $75). Part of the problem is knowing what "brand" name to search for, since most catalogs won't be calling it "PTFE tube."