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I think that I am making some progress with getting Cura set up to produce a single perimeter aerofoil print, but I have one remaining problem.
I have attached a photo of the first layer which I stopped from printing before the ribs were printed. The aerofoil suction surface is printed first, nose to tail. When the pressure surface print is started, again nose to tail, the material does not flo
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U400666
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Slic3r
I suppose I could extrude the aerofoil with no thickness but can I create an stl file with this? I can give it a go.
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U400666
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Slic3r
I am creating the skin in 3d CAD by importing an aerofoil, extruding it and creating a thickness of 0.4 mm. Not sure how to do this with zero thickness I am pretty new to CAD.
The skin came out well in Slic3r at 0.4 mm but my first attempts in Cura had missing patches where the nozzle did not seem to extrude well.
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U400666
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Slic3r
Hi Obewan,
I have attached a couple of stl files which I have been using, these are just test pieces to try to get the method sorted out.
When I slice these in Cura and look in layer view it looks to me like a single perimeter skin, but it prints with 2 perimeters. I may be misreading the Cura images as I am new to this program.
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U400666
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Slic3r
Hi obewan,
The Cura profile almost does what I need, the print quality is very good but the skin is being printed double thickness at 0.8 mm whereas my model has 0.4 mm.
Bit surprised as you have the wall line count set to 1 and the nozzle on my Prusa is 0.4 mm.
Any help would be very welcome.
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U400666
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Slic3r
Thanks for the settings file obewan, I will give this a try.
I had an initial go with cura and found that I got better results with the ribs bonding but some of the skin had gaps in it when printed. With Silc3r I would fix this with thin wall detection, not sure what the cura version is but hopefully your settings file will capture this.
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U400666
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Slic3r
Thanks.
Did you slice this example or was it a prepared g-code?
If you sliced it would it be possible to get your cura settings?
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U400666
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Slic3r
Looks similar to what I got using their prepared g-codes.
I am trying to design from scratch and slic3r is not helping.
I am just playing with Cura now and it looks encouraging. I will try a test print tonight.
Thanks for your help.
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U400666
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Slic3r
Thanks obewan.
Does this approach give a smooth outside surface?
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U400666
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Slic3r
To date I have beem controlling the gap in my CAD program. The gap that comes out in Slic3r seems to be more of an on / off thing. I wonder if there is a setting to allow a bit more extrusion at the top and bottom of the ribs to fill the gap.
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U400666
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Slic3r
Check out the 3dlabprints examples on their website. The ribs are visible when you hold the wing up to light, but the exterior surfaces are smooth, I have printed examples. They are single perimeter and they are strong.
I have been playing with the gap see examples I posted. 3dlabprints use simplify 3d and I wonder if this is more tunable in terms of the overlap. With slic3r I either have a ga
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U400666
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Slic3r
The native infill does not provide an acceptable strength / weight ratio. The wing has to be very light but with adequate resistance to bending and torsional loads.
If you check out 3dlabprints you can see that they have gone to a lot if effort to achieve this and that is what I am trying to emulate.
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U400666
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Slic3r
I am trying to create a wing section using a single perimeter skin and a lattice of ribs inside. The problem I have is getting the ribs to fuse to the inside of the skin, without being visible on the outside.
I have attached to screenshots showing a section of the wing. If I leave a gap of 0.1 mm between the ribs and the inner surface of the skin the ribs do not fuse well to the skin. If this g
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U400666
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Slic3r