11 pieces, 10 weld but one doesnt

[Patico (Alonso Cambronero)]

This is something that really bothers me. It’s easy to solve by stretching the offending piece into the large rectangle, but I want to know why this happens.

I have one large and several small rectangles that I need to weld to form a legged rectangle to use as a the floor for a box-

All the small rectangles have been positioned using alignment shorcuts, and the sizes are the same for all of them. I select all the pieces, hit WELD and most of them weld correctly into the large rectangle. However, there is one (top left) that just doesn’t and a line remains between the pieces. It seems like instead of welding, they just grouped.

If I delete the top center rectangle, top left it welds just fine. I thought this could be a limitation on how many pieces can be welded at a time, but quickly discarded that idea.

I atached file mystery.lbrn2 in case someone want to try and weld the parts.

Thanks in advance.

mystery.lbrn2 (8.3 KB)

[Dskall (D Kallenberger)]

This can all be solved by making the rectangles twice the height and then just snapping them to center and not worry if they are touching the line.

[RalphU (RU)]

It is a tolerance issue in LB. If you look at your file, the top 3 rectangles are all positioned on the same “y” axis - 165.54291

If I just select your top left rectangle and the large rectangle, they weld together.

[parsec (FerAS)]

After the first weld, ungroup and weld again.

[Patico (Alonso Cambronero)]

I know the workaround is easy. Normally, I just pull the unwelded piece into the main object and weld again.

I just wanted to know the “why” this was happening.

[Patico (Alonso Cambronero)]

What is this magic. I didn’t know you could open a LB file like it was a XML.

Time to have some fun looking into the details of more complex files.