topic Betreff: Rough surface and split perimeter in Fusion Design, Validate & Document Forum

Rough surface and split perimeter

brick1343 — Fri, 05 May 2023 01:36:18 GMT

I can't get this to print correctly. The perimeter oval is uneven in places and has gaps between walls (see upper right and lower left of image). Also the surface of the dancers figure is rough. I'm printing with PLA on an Ender 3 V2 Neo.

Re: Rough surface and split perimeter

etfrench — Fri, 05 May 2023 17:22:44 GMT

There are too many details less than .5mm thick. It's unlikely to print well on an fdm printer.

p.s. Tuning your printer may help: https://ellis3dp.com/Print-Tuning-Guide/

Betreff: Rough surface and split perimeter

g-andresen — Fri, 05 May 2023 18:09:04 GMT

Hi,

What nozzle size are you working with?
With 0.25mm it should work

Günther

Betreff: Rough surface and split perimeter

wersy — Fri, 05 May 2023 19:03:28 GMT

There are even a detail of 0.15 mm.

The smallest detail should be at least 2 times as large as the nozzle diameter.
That means if you have a 0.4 mm nozzle the details should be not smaller than 0.8 mm.

Betreff: Rough surface and split perimeter

brick1343 — Fri, 05 May 2023 21:03:16 GMT

I'm using a .4 mm nozzle.

Betreff: Rough surface and split perimeter

brick1343 — Fri, 05 May 2023 21:11:27 GMT

The outside oval is 1.29mm wide so why does it split? I tried changing it to 1.24 so it's an even multiple of .4 but it still splits.

Betreff: Rough surface and split perimeter

etfrench — Fri, 05 May 2023 21:16:17 GMT

That's in your printer. Have you gone through the calibration process linked earlier?

Betreff: Rough surface and split perimeter

wersy — Sat, 06 May 2023 05:37:08 GMT

Without pictures of the print it is impossible to make a statement. I can only guess that you printed with under-extrusion.
But these are problems that have nothing to do with Fusion, unless you use the Fusion slicer.
I would advise you to contact one of the many printer forums.

Betreff: Rough surface and split perimeter

brick1343 — Sat, 06 May 2023 14:47:50 GMT

Hi Betreff,

A picture of the print is attached to my original post.

Betreff: Rough surface and split perimeter

brick1343 — Sat, 06 May 2023 14:51:57 GMT

Everything else that I've printed has come out fine. It's just this one design. However, I'll try going through the calibration.

Betreff: Rough surface and split perimeter

wersy — Sat, 06 May 2023 14:52:17 GMT

If this is to be the print, the image is far too poor to see print details.

Betreff: Rough surface and split perimeter

brick1343 — Sun, 07 May 2023 13:51:21 GMT

Here's a better picture

Betreff: Rough surface and split perimeter

wersy — Sun, 07 May 2023 14:25:46 GMT

Try with setting "fill gaps".

Re: Rough surface and split perimeter

brick1343 — Tue, 09 May 2023 17:18:20 GMT

I got it working. The main issue was the Y axis belt was loose. I also followed etfrench's calibration instructions.

Thanks for all the help. I'm new to 3d printing and still have a lot to learn.