Yep, thats part of how you do it on metal, now answering his resin question might be more useful to the
OP
Firstly super glue takes alot longer to set then plastic glues. I also love plastic glue, because how you said you tried it works in about 1 second. Push and let go. But with super glue that isnt how you do it. Super glue I always pin (unless the mini in question is to small to do this to. Then you have to basically let the super glue set for a minute or two, until it starts to hold a bit. Infact alot of people will use something to hold the parts together for a few until it sets.
But yea always soap and water a resin mini to get the mold release off just in case. Also scraping the area your planning on gluing to rough it up is a good ideas as well. Gives it more to hold to. Other then that good luck