New A350 possibly under extruding and z height is messed up?

Snapmaker 2.0
1

Hi i just received my A350 and im having a few issues.

First, i destroyed my magnetic bed sheet on one side because the z height was too low even though i set it properly according to the instruction manual. Even with setting it like that, my first print was fused to the bed.

I recalibrated higher by a small amount so the calibration card was still resistant to pull out but didn’t crease as easily. I also updated the firmware to 1.9.0.

After this i did a small calibration cube and it was under extruded on the top, that came off the bed easily but the skirt did not.

Then i printed a tiny figure and it broke off at the ankles due to either under extrusion or z height, not sure which. The feet were slightly fused to the bed.

Next i printed a slightly larger calibration cube and it looked great except one corner was rounded when all the rest were somewhat sharp and when i pulled it off, the bottom 1/5th broke off because both the bottom being fused and or the 1/5th area was under extruded or the z height was off. The top was also under extruded, has holes/gaps in the top.

Small thing, the bed was default set to 70c first layer/50c, is that too hot? i lowered it to 50 and 40 also because it takes 6 minutes to heat to 70. seems like a long time compared to my prusa unless its because its bigger?

Anyone have any tips on how to solve these issues? Im afraid to raise the z height because i figure it will be too high to actually fuse the layers. Not sure what to do?

2

Calibrate your extruder first. There are several topics about this on the forum.

2 Likes
3

Just did that now after work. Seems to be printing nicely.

1 Like
4

After that calibration I did a 6 hour print, it came out very nice but the bottom was still fused to the bed and the bottom few layers broke off the model. Any other suggestions?

5

It’s usually because your nozzle is too close to the bed when printing the first layer. Try increasing the z-offset a bit to see if it helps.

6

the only way ive been able to get it to run right is setting calibrating Z wrong (a touch too high) which actually makes it way too high, like .5mm too high, then adjusting lee -.5mm. But maybe something else is wrong?