You have to be invited to become a member in resistor (and any existing member can veto, afaik)
Non members have a limited standing invitation on craft nights, and are not allowed to use power tools or any other non trivial machinery; and expressions of bigotry will get guests thrown out.
Compared to noisebridge's "accept anyone and everything until they make it impossible for us" circa 2011 (the story described here) it is the opposite, I think.