Bambu Studio / Orcra Slicer settings for waterproof parts

[DrCarbon]

Hello everyone,

I need print settings for ASA Parts that are water pressure-tight.

I have already created pressure-tight parts. However, these are larger parts and I would like to start the print directly with the correct settings to avoid rejects.

I have noticed, especially with the first layer, that not almost everything fits tightly. See photo

Especially if you look at the wall, holes remain in the marked area. They disappear in the second layer, but that’s not very good.

Gap filling is also frequently used at the corners. Are there any settings that can improve this?

Thanks.

Kind regards
DrCarbon

[Chris1974]

You could stat by using arachne slice engine and increasing the flow settings (line width from 0.42 to 0.45 or bigger).

[DrCarbon]

Hi, thanks for the quick reply.

That would be a consideration. But do I leave the archane settings at default? Or are there any adjustments that would lead to better results?

The result tends to be worse.

I think the second layer looks a little better, but there are still holes in it.

How far up should I go with the line width? Without negatively affecting my printing speed?

[Chris1974]

In theory arachne engine would close more gaps with a smaller line width where classic would not put anything.

The gaps shown in the preview will in reality be closed by squashing the fillament.

I think you will need to print and see how it holds up.

[DrCarbon]

But then surely it makes sense to carry out small test prints and then test them?

The problem is that it depends on the geometry of the part how it is printed. With simple round fittings, with which you could test this, I think it would be less of a problem.

Greetings

DrCarbon

[EnoTheThracian]

I expect the differences between the layers comes from differing line widths in those layers (i.e. wider first layer).

[DrCarbon]

Here too, I tried to lower the settings of the first layer, but the result remained the same.

[Chris1974]

You could print first layers only and look at them under magnification to see what works best.

Be smart and change only one setting at the time so you know what caused the change.

[DrCarbon]

1st layer 0,42

2nd layer 0,42

1st layer 0,4

2nd layer 0.4

[EnoTheThracian]

Is there maybe also a difference in extrusion ratio?

(Sorry, not at home atm and can’t check slicer setting options before replying)

[DrCarbon]

I think the problem is that it prints the first layer separately from the others only with a width of 0.5. This means that settings for the inner wall, where the problem occurs here, are only taken into account from the second layer onwards.

I don’t know that. Maybe you can improve the result by optimizing the values in the arachne engine.

Greetings
DrCarbon

[RocketSled]

@DrCarbon

a width of 0.5

Turn off “Elephant Foot” compensation and the first layer will print the same as every subsequent layer.