5 thoughts on “Rainbow rollers (Universal III)

  1. Carmela Heintzelman - June 2, 2018

    Ok, so I tried getting this crescent back in–I think I’ve got it in correctly but want to make sure. So I put the crescent back in where the groove is, then I put the screw in and it should cover the part of the crescent that sticks into that groove, correct? That screw shouldn’t be tight, correct? When I tighten it, the roller doesn’t really oscillate. So I tighten it just enough so that it’s in, then the purpose of the set screw is to keep that crescent holder screw in place? Everything oscillates perfectly down and back. Thank you!

  2. Paul Moxon, Moderator - May 27, 2018

    The set screw abuts the crescent holder screw so that it wont back out and damge the form rollers and the rider. After removing the crescent, reinstall the holder and set screw so that ink with not clog the interior threads of the hole.

  3. Carmela Heintzelman - May 26, 2018

    Ok, so I got the crescent out! Question though: why did I have to loosen that set screw? What is it for? Now that I have the crescent out, before I go ahead and print do I put the flat head screw that holds the crescent back on the face of the roller? Do I tighten that set screw again?

  4. Paul Moxon, Moderator - December 16, 2017

    Remove the worm crescent for rainbow rolls all day long.
    – Lift the roller trip lever
    – Spin oscillator tube so it covers the worm gear
    – Use a 1/8″ hex key to loosen the set screw on the side of the tube
    – Use a medium flathead screwdriver to remove the crescent holder on the face of the tube
    – Push the tube way from the worm gear to expose and remove the worm crescent
    – Center the tube on the frame

    If needed, take this opportunity to clean the worm gear, crescent and crescent holder and internal threads for the holder on the tube.

  5. Caveworks Press - December 15, 2017

    Universal III is my press too.
    I have not taken anything out like you are asking about, but I have been able to do rainbow rolls without too much muddling. After my ink is set up with all the colors spread right, I just limit the amount of time the form roller/occillating roller assembly is down and engaged, and also turn off the press whenever I have to do something that requires much time. I lay the ink down on trip, lift up the assembly and do my print. Depending on your edition length this will work for a while. The more ink you add and have to spread out, the more it will blend.

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