TRIMMING is an MCEdit script that performs edge detection and replaces the blocks that lie on the edge with your block of choice.

Use this to quickly detail large scale structures.

The edge finding is based on the number of neighbouring blocks to each block along each cardinal axis (x,y,z).

Note: You may need to manually clean up a little with this version since some interior blocks look out of place to the human eye after filtering. I may improve this if required later by combining some of the 'FILLMESH' logic to detect holes of a certain block type. Maybe.