I have a Colido Print Rite 2.0 which I've had for a little over a year. Been printing with PLA producing mostly good prints but the past month or so, I've been struggling with a couple issues:
- Printer head slamming into lateral frame when zero-ing position before new print starts (I've tried re-calibrating to no avail)
- During printing, I started to get a lateral shift after the print was about 2mm in height. The shift would be a single offset, not continuing to shift
- More recently, I can't get past the first layer and my extruder head is twitching/shuddering which is throwing off the entire print (see image)
Hey folks ...
I have an issue with my '3D compact' whereby the bed of my printer crashes to the base of it's travel after a few hour's into the print. Interestingly the print head keeps moving and feeding filament. I've tried a few different prints but they randomly fail. Has anyone else experienced this anomaly?
I'm a noob to desktop FDM, and I recently came to own a CoLiDo DIY.
My latest frustration with the machine is my inability to level the printbed. From the factory, this printer has no provision for leveling. I have added a typical heated aluminum bed, attached with M3 hardware and springs, to corner mounts of my own design. I've seen numerous examples of this mod by other owners of this machine. So I don't think that I'm attempting anything terribly ambitious.
The issue is, using common leveling procedure, I can't get the bed level. The more I try, the worse it gets. Here's the procedure that I'm using.
1) Adjust the height of the corner nearest the x-y home position of the printhead, to the middle of its adjustment range.
2) Using the metal card supplied with the printer, set the z-stop such that the extruder nozzle causes some drag against the metal card, but no slop or binding.
3) Starting from the top, left corner (home position), move to the next corner, clockwise. Repeat the height adjustment with the metal card.
4) Continue clockwise to adjust the last two corners.
Now I understand that this can be an iterative process, but when I go back to the first corner, it's now 3mm off (nozzle too high). So I repeat the process, tightening the corners where the bed is too high, and loosening where they are too low. Same result. After three repetitions, I'm no closer to having a level printbed, but I'm at the limit of travel on all four corners. Two are as tight as they can go. Two have the thumbscrews nearly falling off.
Am I just missing something? I have a pretty solid understanding of physics and mechanical systems, but it's also my m.o. to miss the obvious. So don't worry about offending me if you have a really basic suggestion.
Some other related info:
The machine is fixed to a pretty flat and level surface.
I have verified that the aluminum plate and glass plate both are flat, on and off of the printer.
The 8mm linear rails appear to be straight. Though I haven't actually removed them from the machine to verify against a precision reference.
The LM8UU bearings are a waste of matter, and I plan to replace them, but they don't seem to be allowing a lot of radial play.
I don't have my DIY bed heater power supply hooked up yet. So I don't know how much the glass changes shape when heated.
I have tried the leveling procedure in different orders, like opposites corners, and starting with different corners.
I have tried different hardware. Always the same result.
I would be really grateful for any help with this issue. I understand that this machine is pretty crude and limited in precision, but some of the basic issues I'm having are starting to get me down.
I have the entry level printer DIY, with PLA no problems I can't resolve but flexible will not readily complete a 6.5 hr run, out of 10 attempts I have 3 and the dilemma is that these are supplied in pairs, they are handed, The filament will bird-nest for no apparent reason and I have had it stall the stepper motor. After contacting Print Rite who directed me here, I am at a bit of a loss to know what to do next. Hope someone out there has an answer before I either buy another unit or put the printing out which defeats the object.