Cut out with offset to a surface of a wing

[wersy]

Hello,

I want to make slots from the lower side of this wing with an offset of 1 mm to the upper surface.
To cut with offset I must select the upper surface but if I do, the entire wing is selected.

Thank you in advance.

Michael

[SaeedHamza]

Hi,

Could you explain what you mean by creating a slot? and what are the lower and upper part you're talking about? and it would be even better to show it on the picture you attached

Regards

[wersy]

Thank you Saeed,

Is it clearer now how I mean it?

Regards

[I_Forge_KC]

I would...

1. Swap over to the PATCH workspace

2. Use the OFFSET command to create an offset version of the top surface

3. Return to MODEL

4. EXTRUDE your gap geometry TO the surface you made

The offset command in the patch environment only offsets the surface(s) you select. This makes it easy to create reference geometry like a theoretical wall thickness.

There are some other ways to do this, but given that you're designing a wing and that skin thickness will likely be a continuous point of reference/interface, this is a smart way to maintain a common reference.

[Beyondforce · Accepted solution]

Hey @wersy,

I hope this will help. To get the 1mm from the surface, just position the profile 1mm from the 3D projected line 😉

Cheers / Ben
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[wersy]

Thank you, but I can't make an offset -1mm.

Furthermore, it must be a solid. The printer shall print only the outlines.
It looks like this:

This is the printed wing:

[SaeedHamza · Accepted solution]

@wersy

Yes the picture is saying it all, thanks

The main problem here is that the offset face command gives a warning that says it can't create a valid result, there for a workaround would be helpful

Here is a screencast that shows how I did it

One more thing: You'll notice that I used the Replace Face tool to get make the offset the upper face of the extrusion, I'm not sure if this is what you want to do exactly, but just in case

Regards

[wersy]

Hi Ben,

Thank you very much for the excellent and well explained video and the tips you gave me.

It is one more good example on how to get a path and use the sweep method to solve this problem.

I can live with it as the slots in fact are only 0.1mm (made it 4mm for better visible).

If I would need a wider slot, the distance to upper surface would not be all the same. This is important to melt the entire end of the slot to the surface when printing.

Cheers Michael

[wersy]

@SaeedHamza

Thank you very much for this video which goes an entirely different way to solve the problem.

The pivotal key to this approach is to split the surface to make it selectable.

Another important thing I could learn is the possibility to move one surface to another one using the Replace Face tool.

This method is universal to all slots, no matter how wide they are. I need the distance to the upper surface to be all the same. This is important to melt the entire end of the slot to the surface when printing.

The only thing I miss, is the audio as I know how good you are explaining, what makes it easier for a beginner to follow the steps. Nevertheless, the video is perfect, I only had to watch it several times 😉

Regards
Michael

[Beyondforce]

Hey @wersy,

Is that what you are trying to do?

[wersy]

Hi Ben,

Thank you again for your additional effort, but what you showed before was exactly right.

For the print method I prefer I need a solid with slots/holes which are open from outside.

This way you can print each layer continuously in one way without unnecessary travel moves. It is even possible then to print without layer change if you print in spiral vase mode, the best way to get smoothest surfaces.

The simple sketch below shows how it is meant.
The nozzle always follows the outline from inside and has a print width of 0.5 mm.
 As the slot is 0.1 mm it forms a spar of 1.1 mm thickness.