[Jewelry making - Article 00878] - [Orchid] Vibrating flexhaft handpiece

[Holly Hawkins]

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    I have what I think is an older (?) Foredom model in my home studio,
    a "Series CC" 18,000 RPM, #2230. However, it has less than 10 hours
    of use from new, out of box condition. When I try to operate it at
    low speeds (for stone setting primarily), I get intense vibrating and
    the handpiece is out of control. However, if I rev it up to high
    rpms, and then take it back down, it is OK and steady. Is this normal
    for this model? If not, any ideas what might be wrong and how it fix
    it? 

    Also, I've been using the #52 handpiece at work, and therefore, many
    more hours than I originally intended for this handpiece. Lately,
    it's been feeling somewhat "gritty", not as smooth as it was 5 months
    ago, before I started using it daily. Does anyone else use this
    handpiece daily and/or have/had this experience? I fear it is not a
    workhorse, but it's so light, and it fits my small hands well. Any
    advice is appreciated. 

Best, Holly.
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