Delete Block

  The Delete Block option allows you to delete the blocks from the topology. The Delete permanently option is disabled by default.

If Delete permanently is disabled, the block will be moved to the VORFN part. The VORFN part is essentially dormant and mesh is not computed for it, however it does help to maintain connectivity. Blocks can be retrieved from the VORFN region using the Add Blocks to Part option.

If Delete permanently is enabled, the block will be permanently deleted. At this point connectivity will be broken and the VORFN region will be rebuilt. This can be useful in some situations, but this will also result in a re-indexing of the blocking. The resulting index structure is usually more complicated and may be more difficult to work with.

Figure 410: Example of Delete Blocks Permanently

Note that there are an equal number of nodes across the hole.
Example of Delete Blocks Permanently
Block selected to be deleted.
Example of Delete Blocks Permanently
After the block is deleted permanently, the edges on opposite sides of the hole are no longer connected by a VORFN block and it is possible to adjust the edge distributions separately.
Example of Delete Blocks Permanently