Hi Alano, for auto boolean that is done when you extrude a face of a solid. So to get that you need to make a face selection rather than a curve selection.

Try this example - draw a box, then select one face of the box. You select faces by doing a second click on the object after the full object has been selected. The second click will "drill in" to select either edge or face sub-objects. In this case you want to select a face. Once you have selected a face, run Construct > Extrude, and the result of the extrusion will be automatically boolean unioned or differenced away from the starting box. It basically has an effect of elongating or truncating the box.

The key thing there is that mode is enabled when you select face sub-objects as the things to be extruded.


For variable radius fillets, the demo video is here:
https://www.youtube.com/watch?v=CemIL-wleOw

The steps shown in that demo video are - first select an edge to be filleted. Then run the fillet command. At the initial prompt, set a fillet radius which can be done either by clicking 2 points and the distance between those points will be taken as the fillet distance or you can type in a radius value and hit enter.

So far that's all the normal filleting - it fillets the entire edge with that specified radius.

In order to enable variable radius filleting, you need to expand the "Fillet set" section of the fillet options, this is shown with a caption and yellow highlight in the video. Inside the "Fillet set" options, click the "New point set" button. This will allow you to define a new point set which will set the points at which the fillet will have different values from the regular initial full edge fillet. Once you click "New point set", you will pick at least one point snapped on to the edge or edges you are filleting. When you are done picking points (which again need to be located directly on one of the edges being filleted), push "Done" or right-click in the viewport to finish defining the point set (the video does the right-click as a shortcut for "Done"). Now you will be back to specifying a radius, however the radius that you enter now will be for the current active fillet set which is the point set that you just picked, it will control the radius just at those points with the radius morphing to the full edge values (or to other point set values if you have added even more point sets) as the fillet travels along the edges. You can add as many point sets as you want, and you can click the "Current set" button to switch the active set if you want to adjust the radius value for a previously defined point set or for the original edge set.

I'd recommend watching the video a few more times and hopefully the above commentary should help to make sense of it, let me know if you still need help.


- Michael