I have a board currently 50x30 mm. And I need to have 4 mounting holes on it.
Bad news is that I don't have enough space to place them in regular way. Now I made the following thing: I placed four 3.2 mm holes with centers within the board edges but big part of the holes appears outside the board:
(white circles are washers edges)
If the manufacturer will be able to do this thing I'm sure that those holes can be used for mounting.
Main reason for this question here is that I'm pretty in rush and if in the Monday morning I will find out that it's not possible I will lost one day for rerouting (and probably to expand the board which is not very good actually). As I don't want to lose a day I came here to have an advise: is it common that this kind of holes can be made? Or maybe there is anything else I'm not aware of?
So if your advise will be to avoid this kind of holes I will have Sunday to make needed changes. What is you opinion?