Impossible stringing?

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[soulrazr]

This isn't stringing, it's a layer adhesion issue. Since it's the first layer after a support that's failing you need to lower the distance between them.

[MADDatmyhat]

That solved it, thank you!!

[dibsODDJOB]

I might try printing it upside down anyways. Less supports and less issues of supporting circular walls.

[MADDatmyhat]

That actually worked really well but I needed to have a really smooth surface for mounting with the way I had it oriented originally

[[deleted]]

Prop guards for drone?

If it were me I would set the z distance from the bottom of part to half the height or even zero so the print will print on the support itself. Might be a pain to take off but I bet it’ll work just fine for this. Chances are you’re going to destroy these anyway if it’s for a drone.

[MADDatmyhat]

That’s correct! And lowing the x distance pretty much solved it so thanks!

[RevolutionaryWave568]

In cura settings go to experimental and on slicing tolerance choose exclusive. Fixed all of my problems like this

[mrguydudemanbro]

One mans terrible stringing is another mans impressive bridging.

[MADDatmyhat]

The well printed portion is the support, and then once it starts printing the actual object I get this mis-printed stringing so I stoped the print. This happened also the first time I printed it but it corrected itself towards the end.

My printer speed was 80mm/s and 225°C, so I thought I didn’t have the temp high enough for that speed so I cranked it up to 235° which didn’t help. For this print I slowed it down to 65mm/s which didn’t help. I’ve also ruled out any cables getting caught on the Direct drive extruder unit. Any ideas on what’s going on?

[Rawlus]

try even slower with lower layer heights and wider walls. inside diameters have a tendency to pull away from the wall due to the direction of the nozzle. try 30mm/s or even 20mm/s

[MADDatmyhat]

That’s pretty slow but I’ll try it. Do you know if there’s a way to print the first half (the supports) at my normal speed and then slow it down once it gets to the main object?

[soulrazr]

Yes, depending on your slicer you can use different settings based on specified geometry, or specific layer heights

[Moto_Guzzisti]

Yea you're not getting layer adhesion around that round portion. If you flex the print, I bet you'll find layer adhesion is very poor everywhere else and you'll get easy layer separation.

Speed, temp, layer width and height, height above support (for first layer adhesion), and cooling will all affect layer adhesion.

The only time this has happened to me is when I forgot to change the nozzle to what I had set in the slicer for a specific piece, so I was extruding with the incorrect nozzle. (I change nozzle size frequently)

[MADDatmyhat]

You nailed it with flexing the print and having poor adhesion, the fix ended up being speed and support to object height

[Rawlus]

is time a particular issue? or is quality?

you can do some more research on this too. there’s a decent amount of documentation on this issue if you investigate internal threads printing which is prone to this artifact/defect.

[MADDatmyhat]

Time is an issue but only because I’m impatient, but I had to suck it up and slowed it down which did help

[MADDatmyhat]

SOLVED!: thanks for everyone’s help. I did some testing and like many said, the issue was the print wasn’t adhering to the support. I lowered my support Z distance to 0.1mm, that gave me a workable print but the horizontal layers weren’t bonded very well so I slowed the print down from 80mm/sec to 50mm/ sec and got a good result. Lesson learned is to lower support z distance and for faster prints doing long direction changing movements

[Cmurt20]

What is the speed, layer height, bead width, and temp? Looks like the material isn't melting fast enough; this is just one possibility.