Hi, in one of your aircraft videos, you had a situation where the line kept jumping in 5 degree increments.
I haven't tried it in that specific case, but it works on other lines - just hold down the CTRL key as you move it.
I used to draw 2D things using the grid function in Word - a bit tedious I know - but it worked fine for what I wanted. To overcome the same sort of issue I used to have to hold down the ALT key - that's why I tried Shift, ALT and CTRL in Fusion 360, and the CTRL worked.
Maybe it will work for you with the angled line.
PS: Can someone please tell me how to change my profile image - that purple thing is just weird !!!
I'm just learning Fusion, but a lifetime ago I was a structural draftsman (pre-CAD if you can imagine it).
I used your method of 'fit point spline' to create my airfoils, but for some reason they "rounded" the trailing edges, so I just made a spline for top and bottom surface - that worked ok. Then I could not get the 'sweep' to work (the TE upper-surface had jagged surfaces spiking out of it!!) so I copied and scaled the root profile to make the mid profile (same airfoil). After that I simply lofted between the root and mid, and the mid and tip. Great result. Using the spline, as you point out, creates a beautifully smooth surface - awesome.
I am now trying to work out how to "twist" the airfoils to create the progressive washout required for this model.
My thought is to rotate the airfoils by the required degrees, then using the "allow lines to be drawn in 3D" option, either edit or replace the planform sketch to pick up the trailing edge points that have moved. This may or may not require re-lofting.
For future reference, if you understand why the trailing edges rounded off instead of staying relatively straight to the TE point, please let me know. I've attached a couple of screen shots to illustrate.
Any comments on my plans to rotate the airfoils will also be welcome.
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