Need Holes Drilled for Lens Flange

[Punker]

Why not use the flange as a retaining ring from behind? Sure beats all of the effort to drill, tap and hope its all aligned. That how my CE was mounted to a Cambo board and it works just fine.

Wow that never even crossed my mind! I'll give it a shot and see if it fits like that.


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[AA+]

A gun tap is also called a spiral point tap. It is not intended to adjust itself more perpendicular to the object than an ordinary tap. The advantage of the spiral point is to push out the cut material ahead of the tap. It works best on an open hole through a thin piece of metal, just like a lens board. It tends to survive longer because the cuttings don't jam it as much as ordinary taps do.

Best wishes --- Allen

[Leigh]

A gun tap is also called a spiral point tap. It is not intended to adjust itself more perpendicular to the object than an ordinary tap. The advantage of the spiral point is to push out the cut material ahead of the tap. It works best on an open hole through a thin piece of metal, just like a lens board. It tends to survive longer because the cuttings don't jam it as much as ordinary taps do.

Correct a mundo.

- Leigh

[goamules]

This sort of question always amazes me. I can't believe the knowledge of drilling a hole and attaching two parts by a machine screw and nut is that complicated today. Tapping a metal hole for this job is way overkill.

[Leigh]

Tapping a metal hole for this job is way overkill.

Not necessarily.

I've encountered many situations where the hole was too close to an obstruction to allow proper fitting of a nut, or where there was no way to place the nut from the rear, or to hold it while tightening.

- Leigh

[Punker]

BrianShaw's simple idea seems to work like a charm. I took the flange off the original board and screwed it into the back of the new board. Haven't tested for light leaks yet but I don't expect any. I still might go to ACE and look into having the screws properly tapped etc. But this may just work. I also had a generous offer from a forum member to drill them for me as well.

Thanks, all!






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[goamules]

Not necessarily.

I've encountered many situations where the hole was too close to an obstruction to allow proper fitting of a nut, or where there was no way to place the nut from the rear, or to hold it while tightening.

- Leigh

I say again: Tapping a hole for this job is way overkill....

[BrianShaw]

Yay... good for you! Now you can shoot some pics instead of discussing machine shop techniques on the internet! I'd like to take credit but not only did I see a pro mount that lens that way, but I also verified that in the old Kodak literature that someone here kindly made available at one time in the past. The CE is my favorite lens; enjoy!

[B.S.Kumar]

One more thing you might want to do: The flange-now retaining ring is a bright chrome. Put some matte black paint on it.

Kumar

[Punker]

One more thing you might want to do: The flange-now retaining ring is a bright chrome. Put some matte black paint on it.

Kumar

Good looking out. Will do!


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