Fillet Center Denotation in drawings.

Hi,

Please find attached image. Right now what I am doing is creating lines by attaching them to the edge and then giving a collinear relation to it with respect to the edge.This is to represent the core extremities for casting.This task takes a lot of time as I have to draw the line , add the relation and change the line properties to thin and Phantom style (or anything that represents a construction line) .

Is there a faster way to insert such line extension?

Is there a better way that I could represent this?

Please Guide.

Many Thanks,

Zia

SolidworksDrawings And Detailing