Transformed shape not intersecting support

[stevenfalco]

I'm attempting to design a test-tube holder (design attached). Mostly, it is fine, but I get an error "One transformed shape does not intersect support".

This occurs in the "all posts" multitransform. There are two repetitions - one vertical and one horizontal. In the attached file I have the vertical repetition (LinearPattern003) first, and then the horizontal repetition (LinearPattern002) second.

Curiously, if I reverse the order and make LinearPattern002 first and LinearPattern003 second, I then get "Three transformed shapes do not intersect support".

I cannot see why this is happening, because the shape it is complaining about is in the middle of the repetition, and it should have support.

Is this a bug, or have I done something wrong?

[Bance]

It's a co-planar issue, the post and dimples are tangent to each other. make one smaller/larger and the op will succeed.

[stevenfalco]

Thanks, I'll give that a try!

I also noticed that if I offset the "post_sk" sketch by +12mm on the Z axis (so that it is on the upper surface of the "base_plate") then the transform also succeeds.

[Bance]

These issues are caused by computing limitations/floating point maths ETC.

[stevenfalco]

That makes sense. I used your suggestion and reduced the post diameter by 0.001 mm. That works perfectly.

Thanks again for the help!

Steve

[papyblaise]

it's bad handling on your part
Multitransform the balls horizontally and vertically then the same thing with post
and Refine = true to make the traces disappear
the error message means that by doing the multifransform in the wrong direction, the copies fall into the void