[Plugin][$] Curviloft 2.0a - 31 Mar 24 (Loft & Skinning)

fredo6

Hello, i really like this script, but i have 1 little thing i cant seem to get it right.
Its a airfoil of a wing and 2 path, with the sweep function i only can select 1 path.
How can i make this work that the airfoil stays between the 2 path??

Best ragards,

Trion

You cannot do it in one pass, because there are 2 surfaces to generate.

So Use Skinning and select the 4 contours on the top side, and again the 4 contours on the bottom side.

Fredo

trion

Got it, thank you so much !!

trion

Hello Fredo6

I made a small donation to your account, because of the great scripts and support.

Thank you so much.

Trion

Alomphega

Hello Fredo,

I have almost the same thing to do : a wing - but this time curved like a kitesurf wing.

I have yet done this with a triangular half wing and CurviLoft worked fine for this with 3 edges, but since I have added some right tips to do a trapezoidal half wing, I'm not able to re-do the miracle.

The problem : I would like to make a skin on the upper face following the tailing and the leading edges as rails, with the upper half of a foil as upper skin shape, then end flat to the tip.

In attachment you will find the half of the wing I talk about :
The purple is the upper half foil shape, the dark red is the tailing edge, the dark green is the leading edge and the green is the tip.

This happen after I select Tailing and leading edges as 1 & 2, then clic, then select upper foil shape and tip as 3 & 4, then "skinning" : nothing happens.
The same trying almost all other selecting orders.

Could you take a look and tell me were I'm wrong please ?

Best Regards,
Guy

Test CurviLoft 'skin'

pbacot

I mocked-up something similar to your picture and can't get it to fail. Seeing as I can make a number of things fail, perhaps you should post your SU file, to see what it is exactly. But the way I am doing it is: I just select all of it and pick the skinning tool.

Alomphega

Thank you very much for your try to help pbacot,
here in attachment you will find a SKP file with the half kite wing a talk about to test it.

HalfKiteWing (SkinningTest).skp

cotty

Something like this? I used TIGs Extrude Edges by Rails (EEbyR)...

HalfKiteWing (SkinningTest)_2.skp

jeff hammond

@alomphega said:

Could you take a look and tell me were I'm wrong please ?

Best Regards,
Guy

you have a tiny line in there at an angle too steep to be picked up by curviloft's autoselection.. (it's in between the red and purple selected lines of your screenshot)

either a) zoom in real close and select that tiny line manually or b) fix the curve so it's continous..

(option b being the best.)

[EDIT] actually, you have more errors going on than just the one i mentioned.. i'm out the door..
someone else can pinpoint them for you

Alomphega

Just amazing and awesome ! Many thanks cotty !

Jeff, I tought this, but very difficult to fix and CurviLoft auto-fix function does not seems to work on my so dirty design. I have to re-draw the stuff but I'm not able to do more fine within SU.

Anyway, I have now some material to test and work on.

Best Regards to all, and best wishes !
Guy

jgb

Trion

I concur with Fredo.

What you need to do is take a copy of the chord at the root and scale it to (at least) 1 other rib location near the tip, but just before the tip curve starts.

Then CL skin individually the inner top and outer (tip) top airfoil, then do the bottom in 2 goes as well. Only explode the surfaces after all curves are satisfactory.

Should take all of 5 minutes.

If you have a problem, come back here with your SKP file and I will do a detailed explanation.

trion

Hello,

Well, it didnt work for me, so here is that file im trying.
Hope you can find out why its not working.

Trion

wing.skp

cotty

I've welded some lines and Curviloft asked me if it should repair some issues ...

wing_2.skp

trion

Thank you for checking and fixing the wing.
would like to know what you did and where i need to look for the next time.

trion

Cotty:

Never mind my last question, i found out what i`m did wrong the whole time...
I installed curvizard and select all contours 1 by 1 and using the make curve weld option.
and your right.. the script was telling me also to fix some problems.
After that there was no problem selection those lines(curves) and make the wing.

this will keep me going for a while.

Thanx all.

jgb

Cotty & Trion

The reason I would split the wing into 2+ parts is to preserve the chord section along the inner span section.

Doing it in 1 go (per side) gives a nice looking result, but the chord tends to be flattening towards the outer section and wing tip.

That is NOT a fault of Curviloft; it's just the way it works going from a "shape" to a point. Intermediate proportional "shapes" result in a better overall curve.

This may not be relevant to a model for "show" but could be critical if accuracy is important. Such a case would be if drawing internal wing structure was part of the model, rather than just an outward appearing skin or mold line.

mikeypals23

I cant seem to get Curviloft to appear in SketchUp. As far as I can tell, I installed that and LibFredo6 correctly. Any help would be appreciated! Thank you for your time.

Screen shot 2013-03-03 at 11.26.14 PM.png