I've been looking for a drafting standard to show how to properly dimension a sheet metal jog's leg length for the purpose of calculating bend deductions and haven't found one. I have always dimensioned to outside control points and aligned the dimension to the jog leg as shown below. This seems to produce the right number for calculating the flat dimension knowing the bend deductions, but I'd like to verify that I'm using the proper method. Anyone know a good reference?
Are you planning to make a tool for the jog?
If not, you might want to contact fabricator and see what tooling they've got.
Usually important part is the offset. Radius and other dimensions depends on the tool.