foam piston?

Because potatoes only last one shot!
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SilentCyan
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would it be possible to construct a piston entirely out of closed cell foam? has anyone tried this out before and if so did it work out okay?
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Biopyro
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Location: UK

Closed cell foam would be crushed because the air bubbles inside would have a lower pressure than the chamber.
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. -Benjamin Franklin
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ALIHISGREAT
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has used foam on the inside of one of his pistons (i think) then casted epoxy around it (well as it invloves epoxy he probably has :D )
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