There is a block definition on layer X, delete it before deleting layer

[brian (Brian Gillespie)]

Because this thread is getting a little long in the tooth, and I want feedback on this proposal now that I have my head around it, I’ve started a new thread:

Proposal: Importing STEP assemblies as nested layers, not nested blocks

Moving the conversation from https://discourse.mcneel.com/t/there-is-a-block-definition-on-layer-x-delete-it-before-deleting-layer/87982/107… A solution that we’ve been working toward in that thread for bringing in nested assemblies from STEP files, and representing them in Rhino such that: Individual parts can be edited in Rhino simply. Unnecessary parts and subassemblies can be easily deleted The model can be exported back to STEP without losing any of the assembly structure The strategy …