Good Fab information.
 

Fabrication torrents thread https://www.homemadeturbo.com/forum/...?topic=77101.0

Tube coping info https://www.homemadeturbo.com/forum/...?topic=82566.0

Formula for pie cuts thread https://www.homemadeturbo.com/forum/...?topic=79775.0

How to back purge thread https://www.homemadeturbo.com/forum/...?topic=76877.0