Hi niko,

> How would you go about splitting that particular surface inside MOI?

It looks like in the full model you would have some kind of side wall along the end there, so probably an offset of that surface and then trim using that surface.

It would generally be more common to focus more on the side cap surface there instead, and let the trim happen by whatever got trimmed off by that cap rather than trying to trim it separate from that.

- Michael