Inferences aren't shown for second 'between' entity

jim_mackraz

I have a simple shape with holes through it. I want to place a mate connector centered between two holes
(https://cad.onshape.com/documents/6b60170f13039e9cb8288219/w/fb57a8a1fb158b063ccaaaad/e/189f22094f45e34cc348cfdf see included comment).

When placing On Entity mate connectors, three mate inferences light up, for each hole.

When placing a Between Entities mate connector, three inferences light up for the first hole, but *none* light up for the second, and it doesn't matter which hole I choose first.

S1mon

I find Between entities to be very fussy and not that helpful except in basic cases. https://forum.onshape.com/discussion/19468/mate-connector-placed-between-entity-on-two-drafted-surfaces-should-lie-on-the-mid-plane

In your particular case, you could just place the mate connector on the origin, or if the holes are likely to move off that center, you could add a helper sketch and use that as a reference. Mate connectors and their options are complex and somewhat unique to Onshape - even though they are basically a coordinate system. 

https://cad.onshape.com/help/Content/mateconnector.htm

glen_dewsbury

For between entities it's not selecting the face of the but the end as though it is a flat faced hole which will never be centered.
Try this. I used the standard mate connecter in the midplane of the large hole the realigned the major axes to the cylinder face of cross hole.
Otherwise I do S1mon's helper sketch.
https://cad.onshape.com/documents/7563387db28cc2aad6b60c82/w/4842e583c06d549557590dba/e/25c77b10179a0b5f5327e396

S1mon

I find Between entities to be very fussy and not that helpful except in basic cases. https://forum.onshape.com/discussion/19468/mate-connector-placed-between-entity-on-two-drafted-surfaces-should-lie-on-the-mid-plane

In your particular case, you could just place the mate connector on the origin, or if the holes are likely to move off that center, you could add a helper sketch and use that as a reference. Mate connectors and their options are complex and somewhat unique to Onshape - even though they are basically a coordinate system. 

https://cad.onshape.com/help/Content/mateconnector.htm

glen_dewsbury

For between entities it's not selecting the face of the but the end as though it is a flat faced hole which will never be centered.
Try this. I used the standard mate connecter in the midplane of the large hole the realigned the major axes to the cylinder face of cross hole.
Otherwise I do S1mon's helper sketch.
https://cad.onshape.com/documents/7563387db28cc2aad6b60c82/w/4842e583c06d549557590dba/e/25c77b10179a0b5f5327e396

eric_pesty

I would also add that you don't actually need the two planes and sketches to create the holes if you just use a mate connector to define each hole...
Also if you re-order the hole features, you can just create your mate connector feature after the vertical hole (but before the horizontal one) without needing anything special:


https://cad.onshape.com/documents/79ae725059fe2322a03764ee/w/0eb46875e5ca885e007eea48/e/dd99d6ebd8988fadd58e58a7

jim_mackraz

Thanks, Slmon.  In this case, I can stick it at the origin and move on with the project.

But this particular "fussiness" is pretty much an easily-reproduced bug. Whatever the priority for it may be, there's a test case on the record. Otherwise, I'm finding mates and mate connectors generally intuitive and helpful.  The 'shift key locks inferences' trick helps a lot.