To be blunt, I've never found a sure fire way to glue/repair ABS. In particular, the kind of thing you find in car interiors when you get a crack etc. or the fixing 'lugs' break off. I've tried various things, some have worked to an extent but I've never found one I'm confident will 'always' work.
I've tried: 'welding' with an old soldering iron, acetone, various adhesives, epoxy, super glue, Gorilla Glue, no more nails.
JB Weld seems to be the better of the epoxies I've tried. No More Nails worked rather well fixing some 'lugs' where I could form some 'webs' and get a good bonding area.
'Welding' (with and without a filler, some scrap plastic) is very hit and miss. It is hopeless if you can't hide it and getting a good, deep, weld isn't easy.
I've seen references to using ABS slurry- ABS dissolved in acetone in varying concentrations (thin and running to a paste) but I've not tried it yet.
The type of things I'm most likely to want to repair are: electronic item cases- the 'posts' where thread inserts go etc, cases for same, may be car interior parts etc., general domestic items.
So, what do others use- assuming they've found something that works!