OneCNCXR3 Tips for using one of the surfacing tools called Surface Offset. This is used as a surfacing function to create an offset surface either side of an existing surface. It can also be used with a zero offset value to retrieve an untrimmed copy of the original model. This could mean the holes that may be in the surface could automatically be closed when offset with a zero amount of offset.

OneCNCXR3 Tips on using the surfacing function of multi sided patch.

In the OneCNCXR3 surfaces function there is one called Circular Surface and this is a tip on creating one of those surfaces.