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Side Views of Cabs Please [Dome Question]

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Author Topic: Side Views of Cabs Please [Dome Question]  (Read 2115 times)
tntmom
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« Reply #45 on: October 12, 2013, 03:52:02 pm »

LOL Kenny!!!!

Carol,

Ok, here's another short video.  I had one little "oopsie" moment during filming but....  that's ok.  You get to see how I catch a cab too!  lol

http://www.youtube.com/watch?v=mECyxv4clt0&feature=youtu.be
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~Krystee

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« Reply #46 on: October 12, 2013, 04:18:08 pm »

Excellent thread keep the replies and videos coming. To my knowledge, Krystee, tips are the only videos on you tube on an Ameritool worth watching. There may be more but I haven't found them. The cups are also very informative. Would like to know the answer to Krystees question 're Graves cups and of they well work on an Ameritool?
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Carol M
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« Reply #47 on: October 12, 2013, 05:38:11 pm »

Three Cheers for Krystee!!!!
The New Ameritool Video Queen!!!


Yes, that TOTALLY helped, Krystee. You're a doll!!!
yes
"I do believe I've got it" !!! yippie

Also, nice catch on that cab.  (giggle)
I've started dopping with Gorilla Glue on large head nails and so my need to 'hang onto the little suckers' is solved.

Thank you, thank you, thank you for taking all that time out of your schedule to 'hear my plea'.
Huge E-hug!! tonytiger
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Ciao,
Carol M
"Pursue Your Passions....."
"Imagine the Possibilities!"
"Mistakes are simply a form of practice!"
"People who never make mistakes.....probably never do anything!"

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« Reply #48 on: October 12, 2013, 10:43:20 pm »

I think I vaguely remember something about the Graves cups but I never saw any of them that I can recall. I have a great memory so I would have remembered them(he he).  I have such a great memory that I can't even remember the last time I forgot something!!
Bob 
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« Reply #49 on: October 13, 2013, 12:15:05 am »

I think I vaguely remember something about the Graves cups but I never saw any of them that I can recall. I have a great memory so I would have remembered them(he he).  I have such a great memory that I can't even remember the last time I forgot something!!
Bob 

HAHAHA!!!!!!  roar
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« Reply #50 on: October 13, 2013, 11:18:29 am »

Would like to know the answer to Krystees question 're Graves cups and of they well work on an Ameritool?
I have a set of these.  They're called Star Cups and you can locate them in Graves' pdf catalog download.  The unit fits any 1/2" - 20 right hand, threaded spindle. It's supplied with the cup holder and three copper cups which can be charged with diamond compound.  Replacement cups made of either copper or lead are available.  The cup "dimple" measures 3/4-inch in diameter.

Rick 
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« Reply #51 on: October 13, 2013, 11:47:45 am »

Bob...  chuckle

Excellent video Krystee! I hadn't thought of using pencil or marker on the hard discs - I'm going to give that a shot. I tend to go off symmetry so that should really help me a lot. You totally rock! yes
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finegemdesigns
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« Reply #52 on: October 16, 2013, 12:42:29 pm »

I've always wondered about cabochon profiles that have a straight 90 angle.
The issue is the bezel would have to extend all the way over the top of the stone to hold it. So it seems to me that the cab needs to flair out at least a little bit towards the bottom. Here are some photos:



This is the shape I usually use. It allows a jeweler to use a very low profile bezel to set the gem. Note that usually the cab comes out with a slightly curved bevel and not flat like the diagram.

And here is a recent cabochon I just put up on eBay:


Vistaite Picture Jasper

And here is the side  view:



I have a few more cabochon side view profile diagrams here on my website:

http://www.finegemdesigns.com/cabochonprofiles.htm

I would be very interested in finding out what most jewelers on here prefer as far as shape and side profile.
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finegemdesigns
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« Reply #53 on: October 16, 2013, 12:53:14 pm »

Quote from: Carol M
Would anyone please show us some photos of the Top View [with dimensions or ruler beside].
Also the Side Elevation from the shortest side [with dimensions or ruler beside];
Also the Side Elevation from the longest side [with dimensions or ruler beside;
Also, what was the approximate thickness of the slab you started with. [guesstimates are fine].
Also any special notes or comments about how you did it, if possible would also be appreciated.

I usually like to work with slabs that are about 5mm thick. After cutting you end up with a 4mm high cab which is easy to work with and not excessively heavy. Of course you can cut higher dome cabs depending on the material and translucency.

After I dop and do the basic shape I then cut the 7 taper for the side profile. Then finish by rounding everything so the dome is symmetrical.

The side photo above shows the result. Note: I also recommend an epoxy and metal dop method vs. using wax. I'm not sure if I posted my method yet but can do so again if anyone wants to see it.
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tntmom
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« Reply #54 on: October 16, 2013, 01:03:55 pm »

Your diagram is the same way that I do my cabs although the girdle line isn't always at 50% of cab height.  I keep my bezel angle around 80% and I have been told repeatedly by jewelers that have set my stones that the evenly angled bezel cuts their setting time in 1/2.  Another thing I have been told repeatedly is that a completely flat bottom is also extremely important as it eliminates "wobble" during the setting process. 
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~Krystee

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tntmom
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« Reply #55 on: October 16, 2013, 01:10:04 pm »

Here is a good example of your diagram except my dome is slightly higher than 50%.

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~Krystee

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« Reply #56 on: October 16, 2013, 01:19:10 pm »

Good photo. It appears the cab flairs out ever so slightly at the bottom? If not I would think a bezel would have to extend at least 2/3 of the way up the side to hold the stone.

And when you say an even profile you mean that the angle of the side should be the same all the way around the perimeter correct?
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« Reply #57 on: October 16, 2013, 01:32:23 pm »

Yes, it is angled for a low setting.  And yes, exactly even all the way around the perimeter.  It makes for a perfectly smooth and even setting.  I was told that if the angle is not even all the way around the cab then the jeweler has to take extra steps to smooth the setting around the cab.  I don't think it matters if it's 7%, 10% etcetera as long as it is evenly angled and NOT a straight 90 degree edge to the dome.
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~Krystee

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tntmom
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« Reply #58 on: October 16, 2013, 01:49:18 pm »

Here is what one jeweler told me:

"Your 80 edges on this stone are extremely impressive to work with. I have some many cabs from different people and they are always different. I typically find stones with girdles that are shallow on one side or two sides and they make a lot more work to get make them look correct.
This stone is pretty large but because of this nice even girdle I was able to reduce the bezel height about half enabling the stone to show itself off more, very nice!"

I wish I could post his pictures of the settings but I believe it would be copyright infringement.
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~Krystee

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finegemdesigns
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« Reply #59 on: October 16, 2013, 01:51:48 pm »

Yes makes it easier for the jeweler. I'm surprised at how many "elite" cabbers on the internet are using 90 sides on their cabs.

And yet they are still selling lots of stones.

Maybe the 90 profile works better for wire wrappers?

Sample 90 profile:

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