Materials:
32 Gallon Trash Can
1.5" PVC Pipe ~4 ft
PVC 90 degree elbow
Male and Female 1.5" PVC Reducer
Large Washer -- I cut a piece off of a Flexible PVC connector
Exercise Band
Rope
Towel
ShopVac Blower & Hose
Drill a 1.5" Hole in the side of the trash can.
Use the Male and Female PVC adapters, and large washer to make a place for the PVC to go through the side of the trashcan.
Cut a small 3" piece of PVC to connect the adapter to the 90 degree elbow.
Attach a 2-3 ft piece of PVC to the elbow.
Fill the trash can ~1/3 full of water and add 1 bottle of dish soap. Dawn seems to work well.
Place the towel over the top of the trash can, then use the rope to hold the towel in place.
Insert the blower hose into the pvc pipe, and use the exercise band to hold it in place.
Set the ShopVac to Blow and enjoy the foam.
