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#1
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23CII left to right alignment
Got myself 2 12x12" mirrors for $3 and scratched off a 1" circle on one to
align. I easily adjusted the front-to-back negative stage alignment with the screw at the bottom of the focussing rails. However I couldn't find any screws for left-to-right negative stage adjustment. So I cut up a plastic 35mm container and used it as shims in between the baseboard and the column. I'm very close to perfectly aligned (but not perfect). Is another way to align in this direction? |
#2
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23CII left to right alignment
"Bruce" wrote in message ... However I couldn't find any screws for left-to-right negative stage adjustment. So I cut up a plastic 35mm container and used it as shims in between the baseboard and the column. I'm very close to perfectly aligned (but not perfect). Is another way to align in this direction? My 23CII has a knurled knob directly on the front next to the red filter bracket. Loosening the knob allows you to swing the neg stage L or R and there is a white line to indicate center. It swings the negative stage and not the lens? I've got the thumbscrew that allows me to tilt the lens left and right...but I'll have to go search for this knob if it exists. --Mike _________________ Ready, Fire, AIM. Bruce Brooklyn, N.Y. |
#3
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23CII left to right alignment
It swings the negative stage and not the lens? I've got the thumbscrew that allows me to tilt the lens left and right...but I'll have to go search for this knob if it exists. --Mike Maybe I misread the question. Yes it swings the lens L & R to align the lens with/to the negative stage. It pivots on an axis but does not shift L or R. _________________ Ready, Fire, AIM. Bruce Brooklyn, N.Y. |
#4
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23CII left to right alignment
Subject: 23CII left to right alignment From: om (Bruce) Date: 4/24/2004 9:51 PM Eastern Daylight Time Message-id: It swings the negative stage and not the lens? I've got the thumbscrew that allows me to tilt the lens left and right...but I'll have to go search for this knob if it exists. --Mike Maybe I misread the question. Yes it swings the lens L & R to align the lens with/to the negative stage. It pivots on an axis but does not shift L or R. _________________ Ready, Fire, AIM. Bruce Brooklyn, N.Y. PS Yes I did say negative stage in the first note, sorry, I meant lens stage. |
#5
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23CII left to right alignment
"Mike" wrote in message .. . Got myself 2 12x12" mirrors for $3 and scratched off a 1" circle on one to align. I easily adjusted the front-to-back negative stage alignment with the screw at the bottom of the focussing rails. However I couldn't find any screws for left-to-right negative stage adjustment. So I cut up a plastic 35mm container and used it as shims in between the baseboard and the column. I'm very close to perfectly aligned (but not perfect). Is another way to align in this direction? Mike, The bracket that holds the whole head to the carriage with the large steel pin (the pivot point to tilt the head to horizontal projection) is the key to getting left and right alignment of the negative stage. I hat to pull the pin and remove the head so I could modify this bracket. What I needed to do was to remove the bracket and enlarge the holes in the bracket to give me a bit of room. I just drilled them bigger, but no too big. Don't need that much play and you don't want to weaken the bracket by removing too much material. Use good steel washers and new hardware to replace the existing screws that hold this bracket to the carriage. I used cap screws (the kind you use with an allen wrench). Made it easier to get at when everything is reassembled. Now, to adjust right to left of the negative stage, loosen one (or both) so the screws and you can twist the head a couple of degrees to get your alignment. I don't have to tell you to tighten the screws, but who knows who else is reading this:~). One other thing, replace the plastic screw below the lens stage. Use a good metal screw. Jim |
#6
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23CII left to right alignment
...and that's why I gave away my 23C -- note that the rails on which the
trolley rides must be perfectly parallel for the 23C to remain in alignment. "Jim Phelps" wrote in message ... "Mike" wrote in message .. . Got myself 2 12x12" mirrors for $3 and scratched off a 1" circle on one to align. I easily adjusted the front-to-back negative stage alignment with the screw at the bottom of the focussing rails. However I couldn't find any screws for left-to-right negative stage adjustment. So I cut up a plastic 35mm container and used it as shims in between the baseboard and the column. I'm very close to perfectly aligned (but not perfect). Is another way to align in this direction? Mike, The bracket that holds the whole head to the carriage with the large steel pin (the pivot point to tilt the head to horizontal projection) is the key to getting left and right alignment of the negative stage. I hat to pull the pin and remove the head so I could modify this bracket. What I needed to do was to remove the bracket and enlarge the holes in the bracket to give me a bit of room. I just drilled them bigger, but no too big. Don't need that much play and you don't want to weaken the bracket by removing too much material. Use good steel washers and new hardware to replace the existing screws that hold this bracket to the carriage. I used cap screws (the kind you use with an allen wrench). Made it easier to get at when everything is reassembled. Now, to adjust right to left of the negative stage, loosen one (or both) so the screws and you can twist the head a couple of degrees to get your alignment. I don't have to tell you to tighten the screws, but who knows who else is reading this:~). One other thing, replace the plastic screw below the lens stage. Use a good metal screw. Jim |
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