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Thread: Tinting ?

  1. #1
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    Tinting ?

    when tinting a dark gradient lens on a gradient machine, is there a way to avoid the semi circular effect at the bottom of the lenses? As it is I'm bleaching out the bottoms (sometimes unsuccessfully) Very annoying

  2. #2
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    I think that a shorter stroke on the lift arm, and ensuring the lens holder swings very freely on it's axis is a possible cure for your issue.

    You can try finishing the color by hand dipping for ultimate control.
    Eyes wide open

  3. #3
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    I'll give it a whirl, Thanks!

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    Found out the semi circles i was getting are cause by bubbles that form between the lens and the lens holder. Wonder if adding salt to my tints would help? Any thought?

  5. #5
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    Some lens holders are notorious for bubble creation. Try a different one.

    Stirring, or agitation creates bubbles, too.........avoid doing this during the cycle, or immediately prior.

    Stealth paddling only! You might want to try a product called Hot Topper(if it is still made).
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  6. #6
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    Quote Originally Posted by Kevin Howtopat View Post
    Found out the semi circles i was getting are cause by bubbles that form between the lens and the lens holder. Wonder if adding salt to my tints would help? Any thought?
    I would worry about salt attacking the steel tank(s). Not a problem with glass containers, tho.
    Eyes wide open

  7. #7
    OptiWizard
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    We use a small amount of dish soap in the rinse water to break the surface tension. Also consider setting gradient 3/4 with the last dip slightly submersing the entire lens to remove any bubbles formed on lens holder.

  8. #8
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    precisionlab Brilliant idea thanks

  9. #9
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    Uncut you're right didn't think of that

  10. #10
    Manuf. Lens Surface Treatments OptiBoard Gold Supporter
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    Quote Originally Posted by Kevin Howtopat View Post

    when tinting a dark gradient lens on a gradient machine, is there a way to avoid the semi circular effect at the bottom of the lenses? As it is I'm bleaching out the bottoms (sometimes unsuccessfully) Very annoying

    Try to tint the lens on your gradient arm, instead of removing the dye. Slower process that way but better results.
    Chris Ryser
    ________________________________________
    DLO. NA.IC.I.T.PO

    http://optochemicals.com............................. http://arcoatings.com

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    EyeMed Insurance

    Is there anyone contemplating doing away with EyeMed?

  12. #12
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    Quote Originally Posted by IWEARMAN View Post
    Is there anyone contemplating doing away with EyeMed?
    Yes! Will be official in May!

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