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 Post subject: Murphy's Laws of Faceting
PostPosted: Wed Apr 10, 2013 8:52 pm 
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A mis-indexed facet cuts faster.

Mistakes are most likely on the last tier when they can make you start over at the first tier.

There are many more laws - but these are today's.


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Thu Apr 18, 2013 9:43 pm 
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Diamond polish jars always land in the drip bucket.... and you thought they did not have an affinity for each other.

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Thu Apr 18, 2013 11:07 pm 
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That stressed piece of tourmaline you're cutting will never show its evil intentions when you're cutting the pavilion (that is, when the problem is more easily corrected). It will always wait until you're finishing the crown, or better yet, after you've removed it from the dop.

Inclusions that are "barely" surface breaking grow at a rapid pace after cutting begins. The degree of intrusion into the stone is directly proportional to the cost/value of the rough.

Those are my contributions for the day 8)

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Thu Apr 18, 2013 11:27 pm 
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Perfectly cut pavilion & crown, overcut the table. :(


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Fri Apr 19, 2013 3:37 am 
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likley hood of a the dopping cement failing is directly proportional to how well the stone is turning out.

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Fri Apr 19, 2013 8:01 am 
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I don't have an entry today, yet, but you all are very funny!

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Fri Apr 19, 2013 10:37 am 
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I usually use the term when discussing small gold parts, but it is valid for faceted stones as well.

The Litterbox Gravity Singularity


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Gravity can operate sideways if you have a cat litterbox in the shop. Small objects always land there.
Always.
Don't even bother looking on the floor.

This is the rare case of gravity operating inversely proportional to Mass. The smaller and more valuable the object, the stronger the Force.


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sat Apr 20, 2013 1:49 pm 
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Faceters definition of clean rough is gemstone rough that is not full of inclusions, veils and cracks spiderwebbing through the stone.
Rough dealer's definition of clean rough is "I washed the dirt off of it."

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sat Apr 20, 2013 3:03 pm 
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Gearloose wrote:
The Litterbox Gravity Singularity


I was going to mention something along those lines but I don't have a litterbox near my machine. In my case some aspects of Quantum Theory come into play, specifically: How an object can be simultaneously both visible and invisible.

I have an old carpet remnant beneath my machine to soften the impact of dropped stones. Nearly 100% of the time when I drop a stone it simply vanishes. It goes away as if it slipped off into parallel universe. It can't be found no matter how long I crawl around in the Jeweler's Position (nose to ground, rear end elevated) with flashlight in hand.

Yet when I check the next morning, there it sits sassing me, clearly visible, right where I looked before . This happens with such regularity I've come to the Heisenbergian conclusion that if it ain't visible in the evening, it'll show up in the morning.

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sat Apr 20, 2013 5:23 pm 
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Quote:
Faceters definition of clean rough is gemstone rough that is not full of inclusions, veils and cracks spiderwebbing through the stone.
Rough dealer's definition of clean rough is "I washed the dirt off of it."

Another sales favorite is "Mine Run". (We didn't look at it or highgrade it, Promise..)
Image

It REALLY means, "We saw it at the mine and RAN AWAY."


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sat Apr 20, 2013 5:29 pm 
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Well, I don't have a litterbox or a carpet.
When I drop a stone, index gear, etc. and other small objects, they seem to end up under or behind the last thing you would want to move to look under. Like my desk the machine is on, or the shelf with a ton of rough on it.

Think I may have to unload that shelf and move it to find my 80 index gear I dropped last night. ](*,) ](*,)




.

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sat Apr 20, 2013 5:43 pm 
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Gearloose wrote:
Another sales favorite is "Mine Run". (We didn't look at it or highgrade it, Promise..)
Image

It REALLY means, "We saw it at the mine and RAN AWAY."


Yeah, I file "mine run" the same place I file "semi-facet". :D

How do you semi-facet a stone? Heh

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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sun Apr 21, 2013 4:36 am 
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O.K, a little off the subject, but here in my area, "virgin ground, never been dug".
On the surface, maybe, but 40ft down, who knows?
Or, when referring to a gem which has been found on the surface,"I stubbed my toe on it! True!
yeah, right.
Barry.


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Sun Apr 21, 2013 9:31 am 
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The incidence of misindexing is directly proportional to how fast that facets cuts how rough the lap being used.

don't mess with Mrs. Murphy


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 Post subject: Re: Murphy's Laws of Faceting
PostPosted: Mon Apr 22, 2013 2:54 pm 
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The probability of a dop dropping onto the end increase with the smaller amount of concrete flooring exposed and the more prone the stone is to breaking with an impact. Always assume that if you drop a dop with opal, tourmaline, or perfect cleavage, it will hit the 1 mm of exposed concrete surrounded by carpet. Because it lands on the top end (gem up), it will both break the stone and launch the broken pieces a distance the square of the height it was dropped. Then see Litterbox Singualarity Theory....

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