What causes spider webbing in 3D printing?

As an FDM printer nozzle travels across an open space to get to the next point, it may sometimes ooze melted plastic, which then solidifies and sticks to the printed parts. This is 3D printer stringing, and it leaves your 3D printed parts with thin strands of plastic that resemble cobwebs or strands of hair.

How do you reduce webbing on a 3D printer?

To reduce the amount of stringing temperature is key. A high temperature means that the material will be more liquid, through which it can easily drip from the nozzle (even though retracted). By using a lower temperature the material is less liquid and thus less likely to string.

How do I reduce webbing?

How to cut webbing

What causes warping?

Warping occurs when the cooling process happens too quickly or unevenly and 3D printed layers shrink and pull on less solidified layers, ultimately lifting the first layer off the build platform and causing deformation.

How do I stop my Cura from stringing?

Retraction is a process used to reduce this effect. By pulling some of the plastic out of the printer’s hot end before it travels, the pressure in the molten plastic is reduced, decreasing the odds of stringing over open spaces.

What’s a good Z hop height?

RE: Z-Hop and retraction settings question – I like my z hop to be around 2 layers high so as I do the majority of my printing in 0.2 my z hop is set to 0.4. On my cr10 with 0.6 nozzle that I use for larger/draft prints I do a lot of 0.3mm layers, the z hop is set to 0.5 on that printer.

Should you Z hop when retracting?

Z-hop when retracted – This prevents the nozzle from hitting the object or leaving “blobs” or scratches on the print surface. Please note that for prints with lots of retractions/travel moves, this can increase the print time.

What is a good Z hop speed?

Ideally up to 30mm/s, as Cura has the setting but limits at 10mm/s.

Should I use combing with PETG?

I have found that because PETG is so runny, combing is not appropriate for a lot of models. If you do use combing with PETG, use a very small max comb distance with no retract. Certainly no more than 10.

Is Z hop good for PETG?

Z hop and coasting – Another important slicer feature to use when PETG printing is coasting. Usually, a value of 1 mm helps eliminate the pressure from the nozzle.

What is Z lift 3d printing?

Vertical lift (Z-hop) – When it arrives at its final location, the nozzle will lower back down to prepare for printing. By moving at an elevated height, this can avoid the nozzle scratch on the top surface of your print. To enable this option, click “Edit Process Settings” and select the Extruder tab.


Videos

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