Bluey
Well-known member
The foam I used looks more like neoprene but it's proper name is a "closed cell, cross linked polyethylene foam." It's water proof. It's often used in construction as an expansion joint.
This is what you want https://www.walmart.com/ip/Foam-Nin...ase-Packaging-Shipping/302319606?from=/search
This is what you want https://www.walmart.com/ip/Foam-Nin...ase-Packaging-Shipping/302319606?from=/search
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