[Jewelry making - Article 00409] - Re: [Orchid] 3M Micro Finishing Discs Oddities

[Michael McKinnon]

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Hi Allan,

>     I'm still confused as to what you mean by "Roloc version". If you
>     are simply referring to a 1" PSA disc, then it has nothing to do
>     with Roloc per se, and the discs would fit any mandrel made to fit
>     those discs. Since the 1" Roloc mandrel is no longer made, it seems
>     needlessly confusing to refer to them. I do want to try the 1"
>     Trizact discs though. 

    3M has several types of attachment systems and it can be quite
    confusing. The point of all of these attachment systems is to make is
    easier to attach or remove a disc. Let me explain: 

    1. PSA Backing - Disc with a sticky backing. Peel of the film on the
    back of the disc and stick it to the rubber mandrel. 

    2. Hook and Loop - Same concept as Velcro. 3M doesn't use the Velcro
    name because it has a trademark. One side is hooks and the other is
    fuzzy. The discs always come with the fuzzy material. 

    3. Dual-Lock - This is fairly new and similar to the Hook and Loop.
    However, both sides are exactly the same. The bond is much stronger
    than Hook and Loop. It is also much more versatile because Dual-Lock
    can also stick to the either side of the Hook and Look. We sell
    strips of this material, with a sticky backing, by the yard and
    people cut it up and stick it to the back of whatever they want.
    Currently, we don't offer any discs made with this material, but we
    may give it a try should there be enough call for it. Ultimately,
    this might end up being the best solution for a disc backing. 

    4. Roloc - This refers to a system developed by the Surface
    Conditioning Division at 3M. If you spell Roloc backwards, you can
    see where the name came from. This system uses color coded discs so
    you can discern the aggressiveness of any particular disc. The
    attachment system that was built for this is as follows. Take a
    normal disc and on the back center of that disc is a plastic screw.
    The holder is a rubber mandrel that accepts the screw. It is very
    easy to just screw the disc on or off. It screws on in less than one
    turn. 

    These are extremely popular in the automotive and airline maintenance
    industries. 3M sell millions upon millions per year-mostly in the
    Bristle Disc (in this case the Bristle-Disc is not the Radial Bristle
    Disc, it looks more like a hairbrush) and Scotch-Brite disc forms.
    The only problem with these for the creative arts is that the
    smallest they come is that with a shaft of 1/4" in diameter which may
    make it hard to use with lots of tools out there. As we have
    discussed earlier in this forum, you can't get these in
    Microfinishing Film anymore but you can get them in the Trizact form.
    Since this would be an new investment for us to carry these, I have
    requested that people let me know if they are interested. If we have
    enough demand, we will introduce the little Trizact Roloc Discs. 

    Hopefully, this was helpful. Let me know if I can clarify further
    (note that we just added this question and answer to our FAQ's on our
    website). 

Michael McKinnon
McKinnon Global, LLC
Fine Jewelry & Creative Supplies
1-800-452-4816
www.mckinnonglobal.com
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