Hey everyone. I’m really at a loss here. I’m trying to print an Ent Miniature - It might be difficult to see in the picture, but the tree branch is supposed to be connected to the base at three different segments.
I’ve tried printing this three times now, and it’s always the same. It starts out alright, then suddenly I hear the dreaded “clacking” noise of the Nozzle hitting the Model when changing position, and eventually it slams into the model hard enough to break off a part.
I re-levelled the bed several times. I switched from Grid Infill to Gyroid. Nothing. It’s not an Adhesion Issue - The Print doesn’t get knocked off, it literally breaks apart.
Other prints haven’t failed yet, but most likely only because they weren’t as thin as this one. I’m certain I’ve heard the Clack Noise earlier, but I’m not sure why. It also seems to always happen around the same height, that being around 3cm.
I recently had to replace my Printbed because of some other issues, but I’ve printed several Prints since then that didn’t had any issues, or “Clacking” Noise. I’m not sure when they started, but I did not make any changes to my setup.
I’m printing with a 0.2 Nozzle at 0.06mm - Having this fail 8 hours in is really…disheartening. This is the third time the print has failed - I’m just starting up another print, I disabled Reduce Infll Retraction and increased the Z-Hop when retract from 0.4mm to 0.8mm. Though perhaps this is Overkill? Also switched the Z-Hop Type to Spiral.
If that doesn’t work…I have absolutely no idea how to fix it. Any ideas?
Usually something like this happens because the part curls due to uneven shrinkage… So while you print, the part cools, shrinks uneven and in the proces starts to bend a little. This raises part of the print slightly causing the nozzle to run in to it.
You can try more cooling or control the enclosure temp better to prevent bending…
Thanks, I will give that a try. Print is currently going strong, after adjusting the Z-Hop and disabling Reduce Infill…But it wouldn’t be the first time.
Usually something like this happens because the part curls due to uneven shrinkage… So while you print, the part cools, shrinks uneven and in the proces starts to bend a little. This raises part of the print slightly causing the nozzle to run in to it.
You can try more cooling or control the enclosure temp better to prevent bending…
@Chris1974 Do you think that if all else fails, upscaling the Model could help? If the branches are bigger, perhaps they are less likely to slightly deform because of the shrinkage. They would also be more sturdy, so while it may not get rid of the source issue (That being getting hit by the Nozzle) it might make them sturdy enough to hold together long enough until that layer has finished.
