prints are printing shifting/offset

i tightened the belts and that help a bit, but it is still offset, but not as much. anything it could be? thanks

on smaller prints it doesn't happen, it would seem.

also the bigger the print, it seems to happen later on during the print, so not on the same layer every time, but i could be wrong.

again thanks for the help.

ok thanks i will check the belt tension again and reflash the firmware.

I have found that complex models ONLY do this when using XYZ Ware. If I slice them using Slicer and then import the Gcode into XyZ Ware it dosnt happen.

So I think its a slicer problem in XYZ Ware itself not a HW issue with the printer.

Hi All,

I'm fairly new to 3D printing. I received my Da Vinci last weekend and have been loving it so far, but I've been noticing this same issue. My latest guess is that the problem is related to the print bed itself. I'm not sure if the rest of you are seeing this but on mine I've noticed that (when cool) if I grab the print bed and the platform beneath, like with my thumbs on top of the print bed, that I'm able to actually slide the glass bed on top of the plastic bed assembly. It moves in each direction, x and y, just about a mm or so.

I was watching a longer print job the other day that was giving me trouble because there was a portion of the print that was cooling and curling up. So the print head kept bumping into it. The part being printed was very well adhered to the print bed and I noticed that sometimes when the head hit the part the bed would shift ever so slightly. It's such a slight amount of motion that it moves, but when we're dealing with layer heights of 0.1mm any shift will end up being noticeable in the final print.

I've tried tightening down the screws at all four points atop the print bed, but with limited success so far. The plate can still shift slightly. Has anyone else experienced this? I've been considering using blue painters tape over the bed to then wrap it around the chassis on the side to try and keep the plate fixed in place, but have been consider other options as well. One other possibility might be to try and have some sort of shim in between the glass bed and the plastic housing on either axis just to pin it so it can't move. Not sure which will be the best way to go yet. Would be interested if anyone else has noticed this and has tried anything.

If your glass moves that easily, you will have to fix that issue. I'd think (but have never tested) that a small dab of automotive silicon gasket adhesive high temp type under the metal tabs that are screwed into the plastic base would stop the glass from moving. It would still be possible to cut through that with a razor blade if you ever needed to remove it.

The thing is that even when your head isn't hitting your print, just the viscosity of the semi molten abs plastic itself puts considerable amounts of pull on a print. If you've ever watched a print get yanked off the glass and follow the head around even though it's halfway printed, you'll know what I mean. Glass that does move as little as 1mm, will give you bad vertical walls on your prints.