Why doesn't this split work?

mubin_icyer

Hi,
I created a wing and split it in half. Now I want to split only small part of it, but split doesn't work and it gives error: Tool entity cannot split selected part/face

https://cad.onshape.com/documents/8b24f97526fb35d8816153f3/v/f21cc84ee946fe8026eae88c/e/78818a1ca37d020e5097b1ba?renderMode=0&uiState=64ad70f0d68a1263fd24f994

Thanks.

S1mon

If you add a small move face to the splitting surface (0.1 in either direction) it works. At first I thought that maybe the adjacent surface was wavering in a way that Onshape/Parasolid was having a hard time figuring out the intersection, but it doesn't look too weird. In any case if you really need the split to be exactly at the joint between the two surfaces, you may have to try a different approach. If you're splitting these parts to build them and glue them together or otherwise assemble them, you'll need some amount of clearance for tolerances anyway, so you may want to make a thin cut, or split the part on either side of the nominal split, and remove the tolerance band.

Another trick is to add a small fillet to the joint, and your splitting surface will work without a move face. 

mubin_icyer

Thank you very much! It worked when I moved the face 0.1mm