How do I place a circle on a face that is vertical to the midpoint of a line?

clay_ferriola

I drew an l-shaped extrusion and I want a hole in it directly above the mid point of the edge. Is there a way to select the midpoint so I can add a relation?

andrew_troup

There is a way of doing it by inferring a relation to the midpoint, but an alternative way which has more steps but is more straightforward in terms of what can go wrong, and easier to describe in words is this:

Create a sketch point in white space (so it doesn't pick up any accidental inferences)
Pick that point and your desired edge, and create a "midpoint" constraint
Now create a coincident constraint between that point and the centre of your hole

andrew_troup

There is a way of doing it by inferring a relation to the midpoint, but an alternative way which has more steps but is more straightforward in terms of what can go wrong, and easier to describe in words is this:

Create a sketch point in white space (so it doesn't pick up any accidental inferences)
Pick that point and your desired edge, and create a "midpoint" constraint
Now create a coincident constraint between that point and the centre of your hole