Hi loveart,

> Can we have this (https://www.youtube.com/watch?v=yrKkdrnjyGg - Ironcad Boolean Feature
> Retention Technology) features like in MoI v4?

I do want to implement a history editing function in MoI in the future but I don't know when it will happen, maybe v4 or maybe in the future.

But the overall focus of MoI is more on generating things from 2D curves, not so much on moving 3D solids around as in that video, so something exactly like what you show in that video may not really be a fit for MoI.

I'm not entirely sure but that video seems like it may be a bit artifically skewed towards the IronCAD result, it's a little odd that there are things like callouts in the IronCAD part but not in the SolidWorks part, I think it's possible the SolidWorks operator there is not quite so familiar with it as the other user is with Ironcad.

- Michael