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#1301

HomerJSimpson
Member
Joined: 19 December 2019
Posts: 29
Member
17 January 2020 05:11 pm

Wally69 wrote:

Thought I had better finish off a few projects before the year ended.

This x-cube (scientific dichroic cube) has just come off the wax and it exploded into life with an early display of New Years fireworks

https://www.prospectingaustralia.com.au … 89a1fe.jpg
https://www.prospectingaustralia.com.au … d61d97.jpg

This is CRAZY MAD!!!! looks awesome!!!

1 user likes this post: Wally69

#1302

Firepanther
Member
Joined: 02 October 2018
Posts: 130
Member
18 January 2020 06:43 am

LoneWolf wrote:

A nice set of ear rings there Panther... Mrs Wolf loves them and now wants some.... Guess I will just have to find her some... big_smile

LW....

Good luck. Have a few more I'm going to send to be done when I get time and hopefully can head out with the old man after the fires are done and look for more

1 user likes this post: LoneWolf

#1303

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
08 February 2020 06:13 pm

Had a nice bit of Citrine in the box, so with a bit of time after Christmas between gardening and work did a cut I've wanted to do for a while. Not in a hurry to do it again.

1581145748_cleopatra_s-eye-6.45ct.jpg

Ended at 6.45ct, original stone was 24.6ct. 15 x 9.5mm

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#1304

Martyz
Member
Joined: 02 January 2019
Posts: 101
Member
08 February 2020 06:30 pm

Wow Dihusky. It was just coincidence that I happened to look on PA just after you posted this. You really had me going. smile
Amazing work.

#1305

Manpa
Member
From: Sheidow Park, SA
Joined: 06 January 2018
Posts: 3,017
Member
08 February 2020 06:53 pm

Magnificent. clap


One of these days Ma!

#1306

Wally69
Member
From: Sydney
Joined: 13 December 2013
Posts: 3,343
Member
08 February 2020 08:48 pm

inlove nice one inlove

More cuts than from a wedge-tail through the windscreen of a EH holden.
cry cry cry cry cry cry

Last edited by Wally69 (08 February 2020 08:51 pm)

2 users like this post: goody2shoes, Billy

#1307

LoneWolf
Member
From: Gold Coast, QLD
Joined: 12 April 2016
Posts: 3,743
Member
08 February 2020 09:26 pm

Very Nice Dihusky... perfect

LW...


Growing Old is Inevitable.... Growing Up is Optional.... Prospectors United Will Never Be Defeated

#1308

Bullwinkle
Member
Joined: 05 March 2017
Posts: 103
Member
09 February 2020 10:32 am

Magnificent work Dihusky! What is the design called?

#1309

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
09 February 2020 10:45 am

Bullwinkle wrote:

Magnificent work Dihusky! What is the design called?

Thanks, the design is 'Cleopatra's Eye', this is the original design created by Bob Keller in the 90s.

1 user likes this post: Skip

#1310

Hilux-Harry
Member
Joined: 03 February 2020
Posts: 7
Member
09 February 2020 11:50 am

Wow! that looks great mate, a lot of facets on that cut. How many hours did that take you?

#1311

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
09 February 2020 12:11 pm

Not sure as I cut it over around 3 weeks, heaps of interruptions and I can normally only get a couple of undisturbed hours when I get home from work. All up probably around 20hrs I would estimate. Had to re-cut the crown a couple of times as one facet had to be cut on 50k, would fall apart if I used 8k so this took a while sad

Then I had alignment problems with girdle breaks to second tier of crown facets which surround the eye, so ended up floating the second tier to make the eye accurate and cut the breaks to line up. Then everything worked well smile

It was an interesting design to execute.

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#1312

Bullwinkle
Member
Joined: 05 March 2017
Posts: 103
Member
09 February 2020 02:23 pm

Dihusky wrote:
Bullwinkle wrote:

Magnificent work Dihusky! What is the design called?

Thanks, the design is 'Cleopatra's Eye', this is the original design created by Bob Keller in the 90s.

Awesome Thanks!

#1313

Hilux-Harry
Member
Joined: 03 February 2020
Posts: 7
Member
09 February 2020 09:18 pm

Thanks for the insite to the design Dihusky. I’m defiantly not up to your standard yet. How would that look in a green or blue? Defanantly I would like to try in the future.
I was wondering if you could help me out with something? I’ve started cutting some oval shapes 8 x 6 and a 12 x 9 in quarts and citrine but have ended up with the “bow tie” effect at the ends. Also trying to get the girdle the right size on the ends is difficult without over cutting the main end facets. What should I be looking at to make it a bit more uniform.They look ok but not great.

Harry.

#1314

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
09 February 2020 09:56 pm

Hi Harry, anyone can cut this provided their pre-polish and polish laps are flat, machine is accurate and they know how to 'push' facets if they are slightly out, but it is definitely not a beginners design.

Ovals are notorious for producing bow-ties, particularly when they have a keel as opposed to a culet. This is where oval designs that maintain a constant angle for the main pavilion facets work better, then have barion facets to control the shape. This does produce a deeper stone than a keel, but goes a long way to overcome the problem.

The Cleopatra's Eye cut is a good example, the stone has 24 main pavilion facets at the same angle, then the shape is controlled by 12 pairs of barions. The finished stone does not exhibit any bow tie effect. It's a Marquise shape so different from an oval but still retains the same potential problems.

The longer the oval ratio the worse the problem. I rarely cut ovals for this reason.

Look for oval designs where the pavilion mains sit within the optimum angles, clear quartz: 41-43 degrees, coloured can go to 45 degrees, and this will go a fair way to reducing the effect.

Girdle problems I can't really help without seeing what you are doing. Do you cut a witness facet before transferring? This allows you to set the alignment and create a 'master cheat' when you start on the crown. Once you've set a master cheat, it stays for all the crown work. It goes a long way to overcoming girdle break stepping, but might need a final little tweak once you do your first round of pre-polish.

If your lap is hollowed or your machine is not aligned, front to back across the full width of the lap, you are going to be battling to get your facets right. What machine are you using?

Hugh.

Last edited by Dihusky (09 February 2020 09:58 pm)

#1315

steve f
Member
Joined: 15 August 2018
Posts: 15
Member
10 February 2020 07:46 pm

dihusky
what machine did you use to cut that

#1316

Deepseeker
Member
Joined: 13 August 2018
Posts: 949
Member
10 February 2020 08:14 pm

That is totally awesome! Well done perfect


Try hard not to offend. Try even harder not to be offended.

#1317

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
10 February 2020 09:55 pm

steve f wrote:

dihusky
what machine did you use to cut that

Hall 2000 with the extended protractor.

#1318

Hilux-Harry
Member
Joined: 03 February 2020
Posts: 7
Member
12 February 2020 10:44 pm

1581507772_feb4ea12-b82a-429b-a693-fe10ffed2e6f.jpg
1581507772_043b1ed4-1b52-446b-a4ed-a228c7def1e0.jpg
Don’t know if the pics will show up as I can’t see them.
Darry

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#1319

StoneTheCrows
Member
From: Central Coast, NSW
Joined: 21 February 2018
Posts: 625
Member
12 February 2020 10:50 pm

Pics are good Harry.
Nice job

#1320

Hilux-Harry
Member
Joined: 03 February 2020
Posts: 7
Member
13 February 2020 10:24 am

1581549727_e42befb4-abc8-4788-bffa-c2d8fe14ec3d.jpg
Hi guys,
Sorry no before pic. I think it’s a Smokey not sure? Came up ok I thought.

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#1321

RM Outback
Member
Joined: 10 March 2016
Posts: 4,911
Member
13 February 2020 02:19 pm

Nice work mate clap clap beer

2 users like this post: LoneWolf, sand surfer

#1322

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
13 February 2020 05:07 pm

Nice work H-H, pretty stones. gemstone gemstone thumbsup

#1323

Bullwinkle
Member
Joined: 05 March 2017
Posts: 103
Member
13 February 2020 06:18 pm

Fantastic job mate!

#1324

Hilux-Harry
Member
Joined: 03 February 2020
Posts: 7
Member
14 February 2020 11:11 am

1581639031_62b5ba3e-afc5-4273-bd91-be52b8279162.jpg
1581639032_a06e7405-a74c-4016-9bf5-b0b438d4fda3.jpeg
1581639032_dd81efed-0877-4e11-97e3-b1b793bef249.jpg
1581639032_02ff1efe-5d9f-4a2b-a43e-5d6b8b463eae.jpg
1581639033_381a12fe-b6fc-433b-9196-ae68dc55b936.jpg
Sorry no before pics but the finished stones.
Harry. thumbsup

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#1325

Dihusky
Member
From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 924
Member
14 February 2020 11:01 pm

You're getting good at this HH clap

If I may offer a little advice, try thinning down your girdle, comp cuts call for 2% of overall height a good commercial girdle is around 5% which gives a strong girdle for jewelers. The step cut stone is too thick for a jeweler to set.


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