I bought a lens and this is what I received :-(

paulbarden said:

I am tempted to scan the broken shutter blade and import the outline into a graphics editor to fix the broken outline, then into a CAD editor to make a 3D file.

Click to expand...

Having done just that with an aperture blade, I was less than impressed with the scan and resulting CAM file. I'm rigging up a camera on the mill and will use it to pick up key points around the blade and then feed the numbers in to my CAD/CAM program - The material will be brass shim stock which will then be soaked in either KSRT or cuprammonium carbonate solution after machining.

Ken Nadvornick said:

Since the pair of acceleration/deceleration times for the blades from a standing start upon each shutter release cycle would be dependent on their mass (overcoming inertia), I would think any replacement blade would need to be a match, so as not to be out of sync with the other blades as they all started and stopped twice each cycle?

Click to expand...

But the shutter blades are all mechanically linked together, so a slight imbalance of mass shouldn't make any difference. A fractional change in total mass may affect the opening & closing times, but will this be noticeable on (for example) 1/25 Sec ?