In this tutorial Jeff Wagner shows how to destroy a building.
One of the steps is to import and lock glue convex at geo level.

In the tutorial it was done with one or two clicks and I can't figure out how.
I unlock it and can't bring back.

Thanks

The node he locked was fetch_objects_to_glue inside of the glue_piece0_to_piece99 object.

This is because otherwise, it re-imports each of the pieces each frame, killing performance and regenerating the glue network, often times.

You'll have to remember to un-lock, then re-lock that node if you change the pieces you're simming, otherwise the glue network won't update to see those new chunks.

speaking of the masterclass,

Jeff a some point walkthroughs a collapsing building hipfile he previously built ( rbd + debris + smoke ). Does anybody know where to retrieve that example?

Also, he briefly mentions a more complex constraint network used in a falling domino of bookcases and books, but can't find this example either.

thanks for your help
Luca