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Paste a list of solid names in Excel column "B".
Prepend Append the solid names with ".\3Ds\".
Append the solid names with the file extension, such as ".00t".
Write a logical formula to create the tree structure in column "A".
Insert a line at the top and enter "BEGIN" into cell "A1".
Save as a CSV file.
Rename to a "block3D" file.
Create a folder named "3Ds" in the same location.
Copy the 3D solid files into the 3Ds folder.
Select the block3D file and the 3Ds folder and zip them together.