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Post by johnjsgems on Nov 19, 2010 21:26:10 GMT -5
If it was me, I would try to find a two station arbor. Then you could have a grinding wheel and expando drum. Jim Barzee that does the cab cutting videos (Marzee Tutorials) has cut a gazillion cabs with just that set up. If you wanted to direct drive either a wheel or drum you can buy a shaft adapter. A double shafted motor would be better but much harder to find. You can see shaft adapters on the Covington Engineering website. While you are there check out their water supply systems. One that looks interesting and portable is a pump up sprayer. I would have to go to Home Depot and make my own but that's me. You started out wanting a tile saw to grind outer edges and a vibe tumbler. We'll have you set up with a complete lapidary shop before this is over. By the way, if you want the picks tapered not flat that is a further complication. You may get by grinding on the side of a silicon carbide wheel but I think I remember you are not supposed to do that.
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drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
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Post by drjo on Nov 20, 2010 0:49:49 GMT -5
Your right about the SiC wheels John, the rule is "The sides are only there to support the edge" grind the sides down and you have a ring of SiC material just looking for a place to go @1750 rpm's right in front of your face.
Dr Joe
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Post by johnjsgems on Nov 20, 2010 0:56:52 GMT -5
Makes sense.
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guitarc
noticing nice landscape pebbles
Member since November 2010
Posts: 77
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Post by guitarc on Nov 20, 2010 5:58:22 GMT -5
Thanks John,
Yes, based on everything I am gathering here I will have quite a workshop! Tapering picks is not something I am that concerned about right now. The agate picks I use right now are a consistent thickness. For me as a guitarist the pick edge is much more an important factor than if or how a pick is tapered. The average guitar pick shape is a pick that is not tapered. Ironically the lexan stubby jazz picks I have used for years are tapered toward the tip. However, the taper is irrelevant for me since I do not play with the tip of the pick. My attack on the strings comes from the sides of the pick or what they call the shoulders of the pick.
The two station arbor sounds like a good idea. Where can one find a used double shafted motors? What are they used in?
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Post by johnjsgems on Nov 20, 2010 9:30:37 GMT -5
I salvaged one out of a restaurant back door fly fan. It will some day be a jewelry buffer. A double shafted motor is just that, a motor with a shaft out of each end. A two station arbor can be seen on page 26 of latest Covington catalog. You can see a double shafted motor on page 16 on their 8" Expando Drum Unit. That would be a nice unit with a grinding wheel on one side. The 8" x 3" drum would be good for sanding the flat sides. Tony (catmandew) had some old Poly arbors in his last used equipment post. I would contact Tony and see what he can come up with.
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guitarc
noticing nice landscape pebbles
Member since November 2010
Posts: 77
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Post by guitarc on Nov 20, 2010 12:37:05 GMT -5
Hey John Thanks
Ok. Good to know what these motors are commonly used for. I will continue to check craigslist and ebay. I will check out the Covington items too.
Don told me about Tony and I did contact Tony last week. He is getting together some pictures for me to take a look at.
Chris
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