yo guys i need your advice based on experience. there is a 100cm bag for a friend of mine arriving tomorrow morning at my place and i'm going to install it on his attic. now the thing is, he has both concrete and wooden beams on the attic. i'm not sure where to drill the hole for the grappel, concrete or wood?
which material will produce more vibrations and which is going to be more durable against the vibrations?
i was thinking that the hole in concrete might get messed up or something while a hole in the wood
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