BUG: Chamfer, Fillet and Hollow tools break, when aligning two objects ege-to-edge in a different workplane

[PingPongLee]

So that was a mouthful.

There a video showing the issue below, but I'll describe it in steps here too

1. Add two boxes and make them rectangles. Rotate one of them 90 degrees
2. Use the Align tool to align them, so that one corner of each meet (like making an 'L')
3. Group the two rectangles.
4. Rotate the object like 10 degrees
5. Place a workplace on one of the sides of the object
6. In the new workplace, ungroup the object, use the align tool again, and align them in the opposite corner, and regroup again
7. Move back to the default workplane
8. Try to use either the Chamfer, Fillet or Hollow tool on the object now
9. Using the Fillet tool with "All sharp edges" an error is shown: "The selected edges cannot be filleted toghether at this size. Reduce the size or select fewer connected edges"

Its easier to show in a video so I'll link to one here YouTube

From my experience with TinkerCAD, i believe this could be caused by the alignment in the non-default workplane combined with the rotated object, causes the two rectangles to actually not to be 100% aligned. It is off by such a small scale that mit might not be visible.

[henmedia]

@PingPongLee thank you for the clear steps and the video, I could repeat it, and your idea was right: the two boxes are not exactly in line after the second alignment. The Align tool rounds the new position to four decimals. For a box that is not turned this changes nothing, but for a turned box it moves the box by about 0.00004 mm, so the two rectangles no longer meet exactly, and the CAD kernel cannot fillet, chamfer or hollow the little step between them. Without the alignment step in between, the same two boxes fillet without any problem. I have changed the tool so that it no longer rounds a turned box off its place; with your steps the fillet of all edges goes through now. It comes with the next release. Until then, do the second alignment on the base plate before you turn the object, there the numbers come out round.

If you'd like to support the project, a small donation is very welcome. 🙂

[PingPongLee]

Wow that was fast, but very great to hear that it was fixable! Thanks for the very quick response!

I also want to thank you for this tool. Its very impressive, and its as easy to use as tinkercad, but with all the features we have been missing all these years!

[henmedia]

@PingPongLee Align and Mirror no longer move a turned box off its place, so your fillet goes through. It is in 1.113.0.