Are tennis balls pressurized
Let me just say that, YES, it is a good idea to Recharge flat balls with FELT in good shape.
Just because it is a flat ball doesn't = no felt. I don't know why everyone assumes this.
Heck, you can open a new set of balls that haven't even been used, and a couple days later they will be pretty much useless for serious playing. ONLY because of the lost pressure.
The PVC pipe sounds great but...
1. Have you tried to build one yourself?
2. Have you personally used a PVC pump that WORKS? (Every one I have seen has some sort of design flaw. I Personally have never seen one the works as good as the pressureball)
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