This video tutorial focuses on the uses of Block Instances in Rhino for 3d modelling. Blocks can be a very powerful tool for any repeating element in your 3d models and this tutorial goes through the steps of creating and editing Blocks within a Rhino model. Timestamps to the key sections of the video can be seen below:
0:05 - 'Block Instance' definition
0:47 - Creating a Block (creation of a simple staircase using Blocks)
2:03 - Arraying the Block Instance steps
2:38 - Editing a Block using 'BlockEdit'
4:45 - BlockEdit on a large scale to edit multiple objects simultaneously
6:00 - Breaking an object out of being a Block back down to its base geometry using 'Explode'