Consider automating STL export

[jon-harper]

This would be handy with the layout files.

Would need to read in filenames from source.csv

• Execute STLExportDialog command
• Optionally, open layout files?
• Select or export all
• Choose output path.
• Overwrite all checkbox
• Click OK -> process

Questions:

• Is this even automate-able (exporting STLs)?
• STL refinement settings
• STEP export, too?