Overhaul the ventilation System in a Willow Feeder - PEP BB greywillow.sand.overhaulvent

This is a badge bit (BB) that is part of the PEP curriculum.  Completing this BB is part of getting the sand badge in Greywater and Willow Feeders.

For this Badge Bit you will overhaul the ventilation system of a willow feeder.

To complete this BB, the minimum requirements are:
  - must use nontoxic materials where possible

To show you've completed this Badge Bit, you must show proof of the following (as pictures or a video < 2 mins):
 - show ventilation system before the overhaul
 - show the tools and materials for overhauling the ventilation system
 - show progress of the overhaul of the ventilation system
 - show the finished overhaul of the ventilation system