Thank You for your advice.

3D Printing
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1

Thank You for your advice.

I’ve calibrated my esteps, and finally can print nice parts.

Most of the fails I had was due to my print temperature being too low!!!

I though I had to lower the temperature to get rid of the strings, it was the extract opposite!

I was printing at 180 for PLA, and it was really really really stringy!

I upped the temp to 200, and now the print looks very good, and as you can see, no strings!

The patterns on the part appears uniform, so I guess that’s from the movements computed by the slicer, and not a quantity issue.

If you have any other advice, I’ll certainly pay attention to that :wink:

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2

Easy fix. Just up the amount of shells that you are using on the part. Those look like infill lines (I assume you are talking about the X shaped ones)

3

As @Griffin_Paquette said; those are infill edges hitting the outside of your part and displacing some of the already deposited filament. You can use more shells/perimeters, as well as some more advanced tricks, but the perimeters option in the easiest.

4

If you are running two shells, and with a .4mm nozzle, set your shell thickness to 1.1mm. That way you only have two passes around the perimeter but it’s .1mm thinner than 3 shells. It’s worked fine for me for a while. As far as I know Cura won’t underextrude a shell.

5

I’ve used CURA and with 1 shell.
I’ll up the shells next time.

Thank you for the hint.

6

I might be wrong but if you want to plug a fan behind this, that won’t work because standard fan are not able to push air through such a small hole.

7

@Fabien_Moret it will still push air, it just won’t be that high of a static pressure. Generally if you want to push a lot of air through a small orifice, you want a high static pressure which a squirrel-cage fan will provide. An axial fan will move air, it just needs to be relatively unrestricted.

8

Also, and anyone correct me if I’m wrong but doesnt air prefer to move round curves rather than corners? With corners youl get mini vortexes which will reduce the throughout.

Saying that though, that is a beautiful object in its own right :slight_smile:

9

I’ll test out the design and post back