Mirror Arm Question

[zozo]

I checked the dictionary, and searched the gallery, but found neither pics nor explanation, so I'm asking y'all to educate me.

I keep hearing reference to "fat base mirror arms" and have no idea what it means. If someone could post a pic of both a "normal" and a "fat base" mirror arm, I'd sure appreciate it.

Thanks in advance.

Oh ya, there was one pic in the gallery, but it doesn't really illustrate the difference, or at least I don't think it does.

[///Mink]

Look right above the hinge.

Fat base:



Normal base:

[zozo]

Does the "fatness" extend through the hinge, or is just the flange that's fat?

[Ian]

I'm pretty sure that the arm itself is the same diameter, just the base is different.

And seriously, does anyone know how to get an OG arm out of a hinge without damaging the arm threads or the hinge?
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