RB67 Lens: Removing a Filter Ring Dent
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Removing a dent from a Mamiya RB67 lens. The first photo shows the dent at around the 4.5 marking and the last photo shows the lens ready to accept a filter. I remove filter ring dents by putting the lens in the correct size cutout in the fixture (ten different size filter rings can be accommodated) and then carefully hammering on a wooden tool with the same curvature of the filter ring. This will restore the filter ring to normal as long as someone has not done the bad deed of taking a pliers to the threads!
