Problem with union of 2 simple shapes
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 From:  Michael Gibson
10620.6 In reply to 10620.4 
Hi Dave, so for combining these pieces that can be done by cutting each of them with a 45 degree angled line using boolean difference, then delete the common face between them and use Edit > Join to glue the pieces together.

That's what I did to make the closed solid in the attached file.

It will be difficult to try to directly boolean them with each other because of the "barely skimming over nearly coincident surface areas" type of surface intersections that would be required for that.

If you select 2 of the pieces (be careful there's also a duplicate copy of one of them) and create intersection curves using Construct > Curve > Isect, you can see that the intersection curves are quite complex and chaotic:



- Michael

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 From:  Sutts (SUTTS99)
10620.7 In reply to 10620.6 
Thank you Michael! That technique worked a treat. In future I'll try to keep my joining surfaces as unambiguous as possible.

Cheers,

Dave
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 From:  Death
10620.8 In reply to 10620.7 
I dl'ed your file and it works if you do what I said earlier. Also: You had 3 objects, I deleted one, positioned the other 2 and presto: a union.

Attached is your file without the 3rd object and the 2 others aligned properly. Select them both and do a union, it works, took only like 3 seconds...
Attachments:

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