[Jewelry making - Article 00193] - Re: [Orchid] Hammer Textured Rolling Mill?

[Dar Shelton]

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    Episode Seven : 'I Need a Bigger Frakking Hammer' 

    The BFH in this case will be a more powerful gearmotor , because even
    with a larger sprocket that gives me a 4:1 advantage over my original
    configuration, the small 1/4 hp motor bogs down rolling steel off of
    steel. The power problem does not appear to be greatly affected by
    the sprocket ratios; the motor itself seems to be the real issue,
    because however it's setup, it starts to bog down at more or less the
    same general area, as far as how heavy a load it will roll. There is
    some advantage with bigger sprockets on the mill end, but not enough
    to make a huge difference in mill performance. 

    The good news is that now I believe it was the chain skipping (after
    the load had pulled the motor and the mill closer together) on one of
    the sprockets that was making the loud bangs during the last few
    tests. I think my mill can handle the extra force from a bigger 
motor.
    I do need to check with mill mfgrs about any differences in
    construction of mills designed for manual use, and those with hefty
    gearmotors driving them. If there's some huge difference and they say
    it's really dangerous to put a bigger motor on my mill (though I
    don't see any motorized mills from Pepe in my catalogs, maybe they
    have one, and I can get direct advice, but more likely I will have to
    extrapolate from what Durston tells me) I guess I'll keep it like it
    is, because it's ready for the job I started this whole thing for. 

    Now I have some pix posted on Photobucket
    http://s129.photobucket.com/albums/p219/sheltech/ 

    The titles should be self-explanatory. 'First generation' means
    either the original peined plate and/or metal rolled from it, and
    '2nd generation' means a steel plate rolled off of the original plate
    and/or sample run off of that 2nd plate. 

Dar Shelton
sheltech.net
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