Assembling Lofted Parts... Best Practices??

[LVAeronautics]

Okay folks, got a question for you all. I have some lofted pieces that are meant to be joined together; in this case, an upper and lower wing surface. I made an upper and lower surface (2 B-Splines lofted together; made without issue), but when I tried assembling them in the A2Plus WB, I was getting all sorts of error messages. I tried constraining along the long leading edge axis, I tried a point to point, no luck.

Some screenshots of what I have; drawing file attached:

Met but not assembled.jpg (36.21 KiB) Viewed 835 times

Pulled Apart because not constrained.jpg (40.8 KiB) Viewed 835 times

I am liking to think I am missing a simple step; any ideas, folks?

Thank you in advance!!

My current setup is listed below:

Code: Select all

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.1.29410 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: f5d13554ecc7a456fb6e970568ae5c74ba727563
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: English/United States (en_US)
Installed mods: 
  * A2plus 0.4.60f
  * AirPlaneDesign 0.4.0
  * Assembly4 0.12.4
  * CurvedShapes 1.0.4
  * Curves 0.6.4
  * ExplodedAssembly
  * fasteners 0.4.25
  * FeedsAndSpeeds 0.5.0
  * LCInterlocking
  * Plot 2022.4.17
  * Pyramids-and-Polyhedrons
  * sheetmetal 0.2.59
  * Ship 2022.4.11

[chrisb]

Moved from Help forum.

[jpg87]

... I tried a point to point, no luck.

Hello, I tested with Assembly3 WB.
The first 2 PointsCoincident constraints worked, the 3rd didn't.

PointsCoincident.png (77.81 KiB) Viewed 712 times

So I replaced it with PointsDistance and I got to 10 microns, but no less!

PoinsDistance.png (82.51 KiB) Viewed 712 times

Code: Select all

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.21.31155 (Git)
Build type: Release
Branch: master
Hash: 6f1b29769b33676edca2bd883b80bed25a0758c8
Python 3.10.8, Qt 5.15.4, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.3
Locale: French/France (fr_FR)
Installed mods: 
  * A2plusSavTraduc
  * Assembly3 0.11.4
  * BIM 2021.12.0
  * BOLTSFC
  * Curves 0.5.5
  * DynamicData 2.46.0
  * fasteners 0.4.2
  * fcgear 1.0.0
  * freecad.gears 1.0.0
  * IconThemes
  * PieMenu
  * QuickMeasure 2022.10.28
  * symbols_library