gemcad.blogspot.com

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Tuesday, August 4, 2015. Transposing Angles: A Quick and Dirty Method. If we have a faceting diagram intended for one gemstone material, how do we transpose the angles for a different material? That is a pretty broad topic, so let's begin with diamonds. Why diamond? Because angles for diamonds have been studied documented extensively. Let's start with a round brilliant in diamond. The angles below were taken from Michael Cowing's Central Ideal. Ideal Brilliant for Diamond. 57 64 girdles = 121 facets.

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Tuesday, August 4, 2015. Transposing Angles: A Quick and Dirty Method. If we have a faceting diagram intended for one gemstone material, how do we transpose the angles for a different material? That is a pretty broad topic, so let's begin with diamonds. Why diamond? Because angles for diamonds have been studied documented extensively. Let's start with a round brilliant in diamond. The angles below were taken from Michael Cowing's Central Ideal. Ideal Brilliant for Diamond. 57 64 girdles = 121 facets.

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GemCad | gemcad.blogspot.com Reviews

https://gemcad.blogspot.com

Tuesday, August 4, 2015. Transposing Angles: A Quick and Dirty Method. If we have a faceting diagram intended for one gemstone material, how do we transpose the angles for a different material? That is a pretty broad topic, so let's begin with diamonds. Why diamond? Because angles for diamonds have been studied documented extensively. Let's start with a round brilliant in diamond. The angles below were taken from Michael Cowing's Central Ideal. Ideal Brilliant for Diamond. 57 64 girdles = 121 facets.

INTERNAL PAGES

gemcad.blogspot.com

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GemCad: Adapting the Cushport On the Fly for L/W=1.25

http://gemcad.blogspot.com/2014/08/adapting-cushport-on-fly-for-lw1.html

Monday, August 25, 2014. Adapting the Cushport On the Fly for L/W=1.25. This post builds on the previous one, so please read that post first. The length-to-width given in the header of the diagram is L/W=1.356, but let's say we want to cut it for L/W=10 mm by 8 mm=1.25 instead. How to get started? 20-28-68-76. Alternate until length is 10.5 or 11 mm again allowing you to "sneak up" on the final 10 mm width when you pre-polish. How to proof-cut the outline in GemCad? 90° New Facet Info. Reformat it, addin...

2

GemCad: August 2015

http://gemcad.blogspot.com/2015_08_01_archive.html

Tuesday, August 4, 2015. Transposing Angles: A Quick and Dirty Method. If we have a faceting diagram intended for one gemstone material, how do we transpose the angles for a different material? That is a pretty broad topic, so let's begin with diamonds. Why diamond? Because angles for diamonds have been studied documented extensively. Let's start with a round brilliant in diamond. The angles below were taken from Michael Cowing's Central Ideal. Ideal Brilliant for Diamond. 57 64 girdles = 121 facets.

3

GemCad: From Triangle to Heart and Beyond

http://gemcad.blogspot.com/2014/08/from-triangle-to-heart-and-beyond.html

Wednesday, August 27, 2014. From Triangle to Heart and Beyond. Hearts, pears, shields and the like can be some of the most challenging designs to cut—lots of steps. Nearly 21 years ago, I did a design called the. Design 10.037 found on www.facetdiagrams.org. To design this, I started with 3-fold, mirror-image symmetry on the pavilion. Recently a designer named Roland Arajs started with my Tri-Heart and played some more with the symmetry, creating his. I started out with Trilliant C. Here is a screenshot:.

4

GemCad: More Hearts from Triangles

http://gemcad.blogspot.com/2014/09/more-hearts-from-triangles.html

Tuesday, September 2, 2014. More Hearts from Triangles. After rediscovering the triangle-to-heart transformation I described in my last post, I decided to look for other candidates, and I found one that I like a lot. I created a design I called Cube Illusion Triangle. Because the facet pattern top view looks like a stack of cubes. It is on www.facetdiagrams.org as design 13.110. There is a link to download the GemCad file at the bottom of that page. As design 10.061. Subscribe to: Post Comments (Atom).

5

GemCad: October 2014

http://gemcad.blogspot.com/2014_10_01_archive.html

Thursday, October 2, 2014. From Retro Reflector to Simple Triangle. In the last post, we looked at the optics of a retroreflector corner-cube prism. In this post, I'll morph a retroreflector into a simple triangular gemstone. Recall that a retroreflector's function is to reflect all of the light rays back towards their source parallel to the direction the ray entered. It does so even when tilted. Let's make the following changes:. Lower the pavilion angle from 54.74° to 49. Make a single-cut crown. For a...

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Computer-Aided Design Software for Faceted Gemstones. User’s Guides in PDF Format. Click links to view, right click to save. Requires PDF viewer such as the free Adobe Reader. Trade;. Left click to view or print, right click to save. GemCad User’ Guide. GemRay User’ Guide. GemCad para Windows Manual de Usuario. GemCad Tutorial Videos on YouTube. Click on the links to open the YouTube. Player in a new window. Beginner: Designing a 9-Main Round Brilliant for a 72 Index Gear. Designing an OMNI pavilion.

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Tuesday, August 4, 2015. Transposing Angles: A Quick and Dirty Method. If we have a faceting diagram intended for one gemstone material, how do we transpose the angles for a different material? That is a pretty broad topic, so let's begin with diamonds. Why diamond? Because angles for diamonds have been studied documented extensively. Let's start with a round brilliant in diamond. The angles below were taken from Michael Cowing's Central Ideal. Ideal Brilliant for Diamond. 57 64 girdles = 121 facets.

gemcad.com

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Computer-Aided Design Software for Faceted Gemstones. Is dedicated to computer-aided design software for faceted gemstones. Faceted gems are used in jewelry. Faceting is the craft of cutting flat, polished facets or faces on clear minerals, natural and synthetic, using a flat grinding disk called a lap. Faceting is a lapidary art. To facet, you need a faceting machine to hold the stone at a precise angle to the cutting lap. Faceting is a fun hobby. That you can take to your faceting machine and cut.

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此页面上的内容需要较新版本的 Adobe Flash Player。 COMPANY:ZHEJIANG GEMCAI METAL PRODUCTS CO.,LTD. 自2009年10月投资5000万元全力倾造高强度紧固件，现可生产螺栓M27-M100 等级 8.8级，10.9级，12.9级。 Founded in 2000,ZHEJIANG GEMCAI METAL PRODUCTS Co.,Ltd.has been focusing on the production of high quality bolts,threas rod,nuts and hardware fixings.In October 2009,we invested 50 million RMB in building a brand new factory with the best equipment.