Hi Joe,
Thanks for your inquiry! A male inlay operation hasn't been finalized yet, there are some issues with parameters we're still trying to figure out, being that the operation effectively combines the profile milling and medial-axis carving operations together into one, resulting in more parameters than any other operation requires. This is looking like it's going to require changes to the project file format (while still allowing older project files to be loaded and converted) along with the operation parameter UI undergoing some changes to accommodate everything - while still being compatible with existing tutorials and videos. We're trying to figure out how to do all of this in a way that doesn't change things too much but other things have our focus and attention at the moment.
The way you're doing it is the way to do it for the moment. We'll be sure to send out an email when new operations are added, so you shouldn't miss a thing.
Cheers! :]
- Charlie