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  1. Replies
    1,222
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    386,401

    Jim Croce; "Roller Derby Queen" June, '73 One...

    Jim Croce; "Roller Derby Queen" June, '73

    One of our great American story telling song writers. In just over 3 months from this performance, he would die in a plane crash in Louisiana. What a...
  2. Replies
    3
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    233

    I don't know about everybody else, but my top 3...

    I don't know about everybody else, but my top 3 uses for knife edge lenses are;

    Shave with one.

    Drill a hole in the center, attach a handle and use it for a pizza cutter.

    Fling them Kung Fu...
  3. Replies
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    38 Special; "Hold on Loosely".. Always...

    38 Special; "Hold on Loosely"..

    Always consistently solid...


    https://www.youtube.com/watch?v=vJtf7R_oVaw
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    731

    (From an average Wably purchaser....) " I don't...

    (From an average Wably purchaser....) " I don't know or care about all that scientific stuff I don't understand. All I care about is looking cool in my selfie as I dangle off the edge of the Grand...
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    731

    I see no mention of the word "mirror" in the...

    I see no mention of the word "mirror" in the above article or their website. I also could only find non-Rx (plano) options for this lens.
  6. Even though you are decentering the OC, you need...

    Even though you are decentering the OC, you need to eliminate decentration to trick the calculator. It makes no difference what bridge size you enter (or PD for that matter), as long as the frame PD...
  7. Replies
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    386,401

    Robin Trower; "Too Rolling Stoned" '72 ...

    Robin Trower; "Too Rolling Stoned" '72


    https://www.youtube.com/watch?v=ZTyAXk_LyCY
  8. :rolleyes:

    :rolleyes:
  9. Power makes no difference unless you’re figuring...

    Power makes no difference unless you’re figuring how much you can *cheat* on decentration (altering the OC placement due to low prismatic value at 180). Frame PD - patients PD + Lens ED. With the...
  10. Replies
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    1,837

    Doc, Doc,...You “ Didn’t follow my plan of...

    Doc, Doc,...You “ Didn’t follow my plan of treatment “...I’m glad you’re back for a second visit..... Remember : 90% capture rate. (Yea!) Independence! Getting to say, “Told ya so!” To pagan...
  11. (I somehow lost 3 hours...) The method I...

    (I somehow lost 3 hours...) The method I described above eliminates decentration in the equation. You are simply having the calculator figure the thickness of a certain power with a certain radius....
  12. To expand on what finefocus was saying, you have...

    To expand on what finefocus was saying, you have to “trick” the calculator. Example;

    Power -4.00 -2.00 x 180 OD

    You are going to place the OC 4 above datum. What is the approximate thickness at...
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    New for me too, though, I've probably had one or...

    New for me too, though, I've probably had one or two over the years and didn't know their particular case had a name other than "diplopia".
  14. Replies
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    Mick, you been at this since we ground lenses...

    Mick, you been at this since we ground lenses down on Fossil Creek with smooth rocks. Get a piece of paper and feather trace the eyewire part and improvise the rest. Transfer to a pattern blank, cut...
  15. Is that the same Merriam Webster that sits on a...

    Is that the same Merriam Webster that sits on a bench next to the Ohio River in Rosiclare Illinois and complains about caterpillars on her tomato bushes? I know her! I’ll let her know!
  16. Mob, correct me on any errors; 1. RD seg...

    Mob, correct me on any errors;

    1. RD seg pre-cast are only available in CR, no polar option.

    2. 3 Rivers does backside RD segs in most any material/option. ( expect to pay)

    3. If worried...
  17. Thread: Tumblers

    by optical24/7
    Replies
    14
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    766

    A 3D printer may work for small production. If...

    A 3D printer may work for small production. If you’re talking about 2 or 3 a day, I don’t know if a tumbler would be as economically feasible as hand polishing which would be an extremely small...
  18. Thread: Tumblers

    by optical24/7
    Replies
    14
    Views
    766

    Well, I'm not sure if my farm tumbler would work...

    Well, I'm not sure if my farm tumbler would work on frames. Send me a few and I'll throw 'em in and see what happens...


    https://www.youtube.com/watch?v=DMydVdwmuws
  19. Replies
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    Eddie Money

    Eddie passed away today at 70. Though I was never a huge fan, I ALWAYS turned the radio up for the lead guitar solo on this song, " Two Tickets to Paradise" ( And no, he never sang it, " I got, two...
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    Chemistrie bridges don't have pad arms or nose...

    Chemistrie bridges don't have pad arms or nose pads. If the lenses were round(ish) and the lenses could ride on the patients bridge, you may get away with using their bridge pieces. I think a perfect...
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    Man doc, I wish I owned the pharmacy you use,...

    Man doc, I wish I owned the pharmacy you use, they must be getting rich refilling your BP meds!

    1. 90% retention rate? Celebrate! Roll a fatty! Break open a bottle of Ripple! Heck, go all in and...
  22. Replies
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    386,401

    3 Dog Night; Eli's Coming '75

    Wow! I feel like I just went to a gospel church....


    https://www.youtube.com/watch?v=0CuNBengxaQ


    EDIT; Bummer "This video is disabled to play on other websites". (Eat me youtube)

    go here...
  23. Thread: Hev - a/r

    by optical24/7
    Replies
    4
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    813

    Welcome to Optiboard! And... Don't drink the...

    Welcome to Optiboard! And...

    Don't drink the corporate kool-aid.

    https://onlinelibrary.wiley.com/doi/full/10.1111/opo.12406

    From the above white paper....

    ConclusionsWe find a lack of...
  24. Do you have an edger? Spring a buck and put some...

    Do you have an edger? Spring a buck and put some grey 3 cr’s in ‘em.
  25. Replies
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    14459 Anything like this?

    14459

    Anything like this?
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