Joseph Kashi
13-Mar-2021, 01:10
I have a 5x7 Agfa-Ansco tailbed camera (fixed front standard model) that's largely refurbished to relatively tight working condition with one exception: the side grooves in the track still have some wear or play in them allowing the rear standard to have some forward and back movement when lightly rocked by hand despite being the locking nobs being fully tightened. These are the two grooves in which the back standard base moves forward and back when the camera is focused.
I can fit a .005 inch piece of shim brass between the wood groove's bottom and the piece of rear-standard metal that rides in it. Doing so noticeably reduces the amount of possible movement and it's clear that this play is the major remaining looseness. I've already tried to expand the wood and tighten the groove a bit with Swel-lock.
My question: is there anything else that might be done to tighten this track groove by about 5/1000 ths inch without binding the focus or are we at the practical limit for what can be done to improve rigidity?
I can fit a .005 inch piece of shim brass between the wood groove's bottom and the piece of rear-standard metal that rides in it. Doing so noticeably reduces the amount of possible movement and it's clear that this play is the major remaining looseness. I've already tried to expand the wood and tighten the groove a bit with Swel-lock.
My question: is there anything else that might be done to tighten this track groove by about 5/1000 ths inch without binding the focus or are we at the practical limit for what can be done to improve rigidity?