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I pre-soak on the roller—running same speed as I will use for processing. i start off at a slower speed for a few revs to make sure that the drum and lid are coaxial. Otherwise the lid might loosen...

Perhaps the final post for this thread -- Size M2 x .4 x 3mm flathead screw fits my LPL 35mm carrier for my 4550 enlarger. I received 50 from McMaster Carr a little under 23 hours after confirming...

Thanks George, for doing that check! That’s the size I ordered today from McMaster Carr; and they expect that I’ll have them tomorrow (not sure how they do that so quickly!).

Monday's the big day. Unless I hear differently from Omega Brandess by the end of the day, I'll order M2 x 4 x 3mm (qty. 100). So if anyone needs up to 99 of that size, Ill be happy to help them out...

Thanks Leigh and Roger. I’ve ordered from them only twice (shim stock to align my enlarger); and I agree on their excellent service, but they somehow completely slipped my mind this time. I...

Good link; thanks. Yep: gotta get 100; but that’s still under $5.

Thanks Alex. I’ll give KHB a try if no luck elsewhere. I bought a screw from them previously; and shipping was $13+. They said they had to put it into a cardboard box for customs reasons. But I agree...

Thanks Dennis. I tried three hardware stores this morningwith no luck. I’ll search hobby stores.

Thanks Jac and Leigh. I sent a message to Omega Brandess tonight, and I will find an Ace tomorrow. I’m in a small town in mountains of western NC. I was just in MN last week — dang — but will be...

Thanks Bob and Keith. I’ll try both.

Mike

I received a used 35mm negative carrier for my LPL 4550 enlarger and found that a screw is missing. It was an OK price ($50), so rather than return it, I thought I’d try to get a replacement screw. ...

Mine (4x5) are numbered sequentially regardless of make. Some years ago I measured all of them and discarded those not making spec for film plane depth, so I am missing some numbers now. If I ever...

Regarding the pen, another thread — way at the end of it — is “Requirements and standards for HABS/HAER photography.”

There’s a thread here “marking negatives” that may be helpful. Sorry I’m not able to figure out how to post the link.

Sorry. I made the same mistake thinking of focalpointlens.com

I called the phone number f or the website a couple of weeks ago and the recording said they’d closed.

I have a separation I want repaired and called Edmund. They said they only repair their own stuff. I contacted a rifle scope repair service (Parsons?) and they said they will repair separations, but...

Deleted. Wrong thread. Sorry

A couple of points that may be useful... last photos I took from a 172 were in the late 70s so maybe the design has changed, but the door windows could be opened in flight, and if the one screw...

I'm aware that there are various overlaps used for [aerial] stereo photography, so for trivia's sake I'll confirm that the RF-4B (and I believe the RF-4C as well) has two settings for overlap: 56%...

I’ve used my Speed Graphic with Graflock back and Grafmatics from light aircraft and through the floor of a heavy military helo without apparent issues. Locked down tightly is a requirement for you...

Following Michael R's point about 1/3 stops, could it be that you actually increased exposure 1/3 stop each time, but mistakenly counted whole stops when getting to your Z-I neg? If so, would that...

I spent about 20 years in the aerial imagery field (a long time ago), saw the effects of static on aerial film sveral times, and believe that it's a reasonable suspicion for the dense streaks in the...

Made me chuckle remembering an analog to John's remark I heard from a prof many years ago getting a masters in a business field -- "When gold is struck, sell shovels."