http://www.forrestrace.com/suction-cups-2/
Can suction cups grip to a concrete wall?
I’m researching about suction cups and my school blocked all the sites except this.
How about the back of a wooden door??
Maybe.
If the concrete wall had a very smooth finish on it then it might stick. If the wall had a smooth finish and was also coated with a sealer or semi gloss paint then it would stick much better. If the wall had a rought finish then I doubt it would stick at all.
A plain wood door with no finish on it, then no.
A painted wood door with a smoot finish, then yes.
Wood’s Powr-Grip Hand-Held Vacuum Cups
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