I'm working on a daughter board PCB which will plug into a larger board. I'm interested in trying out edge connector plating for the connection type. However, I'm not sure on what surface finish is appropriate for edge connect plating.
Doing a bit of research, I've found that a hard gold finish (gold fingers) is a popular method due to its robustness. However, I'm thinking this is not a cost effective solution.
I know that a lot of board houses use HASL surface finish as default, would it be appropriate to use HASL as edge connect plating? How concerned should I be of ware?