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  1. Replies
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    Certification in Alaska

    I worked in Alaska for about 2 years in the early 90's. At that time there were about 75 opticians (licensed, apprenticed or otherwise) in the state, and that may be a stretch.

    At the time, I was...
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    ARC protection

    As stated before, use edger dots...blue 'surface saver' type tape cut specifically for edging and the like...available from any lab consumable supplier.

    Duane
  3. Telemarketers

    For fun...I tell them I'm Black, I think (not really) cuz my mom was Black and father was Samoan, but didn't know him. But they each had a White parent, so I'm confused on how to answer. Currently...
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    ED measurement

    H-m-m-m...too thick for PLUS lenses. Let see if I understand my math.

    50 mm true box A measurement (measured where lenses come closest together as a starting point, finishing at the extension of a...
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    ED measurements

    ED is acquired by adding the eye size (True BOX width, NOT from/close to the 180 line) + 2x's the patients monocular PD. This will give you the minimum lens blank size to use. Some of us add a little...
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    Practical Jokes

    1. When assembling 1-hour stores we would ask the greenest of the green to go to Sears/Monkey Wards, $20 in hand with a P.O. filled out with catalog number, to retrieve an 'anodized, rubber handled,...
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    Need Supplier/Mfg for Nalone

    I am looking for the N.A./U.S. distributor or manufacturer of a product called Nalone. It is used as a lens stripping agent. If you have info, please post or e-mail to me direct.

    Thanks...
    ...
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    welding splatter

    1st given: weld splatter sticks to glass lenses
    2nd given: weld splatter doesn't stick to CR-39

    I go with what I learned, with not much scientific back up and it is this: The splatter is at the...
  9. Thread: Prism

    by Duane Metcalfe
    Replies
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    15,193

    Yoked Prism

    I can't add much here except I first experienced it while in Alaska in early 90's. The Army/Air Force OD's would prescribe, but couldn't offer a reasonable 'phone' explanation...just do it. Never had...
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    1.0 thickness and breakage

    Lots to consider...edger chuck pressure (manual chuck, air or electro/mechanical); edger head pressure; elongated ed's with too thin a lens creating flex; material surfaced to thickness not...
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    Important: Tips on Dispensing

    H-m-m-m...dumb stuff I've seen first hand and NOT to be repeated:
    1. Vegatable oil used as heat transfer oil in tint unit. Company 'on hold' with everybody (normal?), couldn't get the right stuff....
  12. Edger wheel balance

    The other posts were correct in that wheels are balanced from the mfg. Further, your machine should be level p/mfg's recommendation. Be sure to clean out the bevel chamber and to clean any shmigma...
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    Base Curves-Meniscus

    OK, lotsa years lost on my end, but somehow me thinks the term meniscus lens is being used incorrectly or used to illustrate a point. Can we all have the book definition of a meniscus lens, please.
    ...
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    I'm out on a limb here...bear with me. I assume...

    I'm out on a limb here...bear with me. I assume you are speaking of resin high index of some sort. The bulging of centers is probably due to the compression of the frame around the lenses...either...
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    Bobb, I wish to add a comment to Steve's reply...

    Bobb,
    I wish to add a comment to Steve's reply about hard coats. Most coatings applied to lenses are of the IR +/- 1.50, although there are some lens mfg's matching HC IR to lens IR. Factory applied...
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