Gemcad tutorial

Gemcad tutorial

To post designs to the Gemology Project, you need to first create an account. You can do this by filling in a request through the contact page.

Your request will be processed as quickly as possible, but please allow us some time to do so. Normally, you should be able to access your account within 48 hours.

You will receive an e-mail containing your user name and password from one of the administrators. Once you have received your log-in details, you can proceed to the log in page. A link to this page is provided in the top right of your screen Internet Explorer 8. After you log in, you will have access to the "Edit Page" function, which is necessary to begin posting designs.

These programs will be used to prepare your design. GemCAD is required to create the design itself. PDF file. Adobe Photoshop or the website are used to convert that.

PDF file into a. JPG file. GemRay is used to create a simulated rendering of your design, while digital cameras are used to take pictures of your test cuts.

Help:Faceting Designs

All of this will be explained in Step 3. Before proceeding to Step 3, please ensure that all required programs are installed and correctly functioning. Please note that this tutorial assumes that you are already skilled at using GemCAD, and have already created a design you wish to post.

Now that you've prepared your design, it's time to get your name onto the Gemology Project as a registered design author! The following steps will create a subsection in the Gemology Project where you can post your designs as you write them.Gem Cad. GemRay renders images of gemstones using the technique of ray tracing.

Its purpose is to predict what a faceted gemstone will look like when it is cut and to optimize its angles for the best optical performance. While GemCad is concerned primarily with the shape of the gemstone, GemRay is concerned with its appearance and performance.

GemRay lets you select the color of the material. Just like in a real gemstone, the farther a light ray travels through the material, the more the light is absorbed. You can select the refractive index. GemRay can model dispersion. If you set the dispersion to a value greater than zero, GemRay will separate the red, green, and blue rays, assign each the refractive index corresponding to the wavelength and material and then follow the paths separately.

GemRay can take full advantage of multicore processors. It calculates one animation frame per core. It took a four core AMD system under a second to calculate the images for the animation of the amethyst on at the left, and about two seconds for the image of the diamond with dispersion.

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GemRay comes with a built-in animation player. With a click of a button, you can save individual frames or all the frames in the animaton as JPG files. GemRay also calculates the optical performance under several distribution of lighting. The graph at the right shows the brightness vs. If you change the angles in GemRay, you must apply the changes in GemCad in order to view the new angles and print out the diagram.

GemRay will not run without a registration key. Unlike GemCad there is no trial or evaluation period.

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The program does come with a money-back guarantee. GemRay rendered the frames for this animation in less than one second. Click the here to see the faceting diagram for this simple triangle. The colored flashes of light are due to dispersion. GemRay follows the paths of red, green and blue light rays and calculates an image for each. These are combined to make a single color image. GemRay rendered this animation in about two seconds. With dispersion, rays of different colors of light can take different paths through the diamond.

All rights Reserved. View more website layouts and web design articles.

Faceting Designs

GemRay for Windows GemRay renders images of gemstones using the technique of ray tracing. Renders images of gemstones using ray tracing. Predicts how a stone will look. Evaluates the optical performance of a gemstone.

Optimizes the angles for best performances. Models colored stones.Gem Cad. GemCad is a computer-aided design CAD program for faceted gemstones. GemCad simulates a faceting machine and displays accurate 3-D views of the gemstone.

GemCad can follow paths of light rays through the stone to allow you to optimize a design to minimize light loss. The end product is an accurate faceting diagram that shows several views of the stone with accurate angles, indexes and dimensions.

If you have the Datavue II database of facet designs installed on your system, GemCad can access it directly. GemCad is shareware. You can try it for a period of 30 days with no obligation to purchase it. All rights Reserved. View more website layouts and web design articles. GemCad has three main purposes: Proof-cutting an existing diagram. Proof-cutting a design on the computer allows you to check the accuracy of the diagram and discover pitfalls before wasting valuable rough.

You can see the design at every stage as it evolves. Unlike your faceting machine, GemCad has an Undo button. Editing a diagram. You can take an existing diagram and modify it to optimize its optical performance for a different material. You can scale a diagram to make it fatter, skinnier, taller, or shorter to fit a certain piece of rough. Designing a stone from scratch. Advanced users can use GemCad to create new designs.

GemCad frees the user from the tedious calculations required to determine angles. Go to the Learn Page to find out more. Introducing GemRay for Windows.Imitation Gems -Useful Gemology Links! Stephen Challener Geologist Stephen gemologyonline. Time to catch up on reading, lapidary projects and binge watching TV. Stay home. Stay well. Posted: Mon Jul 23, am. I finally got off my lazy ass and bought GemCAD. Unfortunately, the first real day of classes for med school is tomorrow. What have I been doing all night instead of preparing for class?

Dicking around with GemCAD. Any links to a tutorial? Are you sure you want to go to medical school? Sounds like you would rather be a poor gem cutter.

I'm just hoping my doctor paid more attention to school than his hobby Araya, check out the tutorials on you tube, its good to be able to see not just read or hear what does what on gemcad and gemray.

Congrats on your purchase, it is great for serious cutting and being able to test a cut and proof any design digitally saves you mega bucks on really expensive rough and costly bad designs. Posted: Mon Jul 23, pm. Welcome to the GemologyOnline. A non-profit Forum for the exchange of gemological ideas.

Page 1 of 1. Previous topic Next topic. Faceting by Arya. Post subject: GemCAD! Precision Gem. Precision Gem wrote: Are you sure you want to go to medical school? He can just be a poor doctor yeah, they do exist!

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But then again, I'm biased. Have you ever noticed in a lot of the old Lapidary Journals back when they were thick and good! You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum.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 Tri-Heartdesign To design this, I started with 3-fold, mirror-image symmetry on the pavilion. This inspired me to take another look at morphing other triangular designs into a hearts. When designing and cutting a heart, there are two important advantages to starting with a triangular design.

This means lots of steps with a lot of time spent changing the settings on your machine and more chances for mistakes. With 3-fold, mirror-image symmetry, you can cut up to six facets at the same angle and mast height.

With a suitable design and careful doppingthe cutting sequence can be much simpler. The second advantage is with optical performance. When light rays hit a pavilion that is a three-sided pyramid in shape with steeper angles than usual, interesting things happen. Many light rays bounce three times off pavilion facets instead of the usual two and then return to exit the crown. The result is better scintillation and better performance when the stone is tilted. This can be particularly beneficial for materials of lower refractive index—quartz, R.

The symmetry wasn't quite complete in the design in the database, so I tweaked it. I made the corners less sharp, moved some meets around. I optimized the angles for quartz, but they also work well unchanged for CZ.

Tapered Girdle

Note the steep angles on the pavilion. This is to take advantage of the three-bounce principle. I duplicated angles wherever possible.

I also made sure the steps 1 and 2 facets on the pavilion meet at a temporary center point, so it's easy to make the outline. I posted the design on www. Here is a screenshot:. This post builds on the previous one, so please read that post first.Welcome to the Gemology Online Faceting Diagram database!

All patterns on this page were written by faceters on this site. To access the diagrams, simply click on the image of the stone. To view the image up-close, click on the small "picture-in-picture" icon in the lower-right corner. If a computer rendering and an actual stone are displayed, clicking on the rendering will take you to the diagram, while clicking on the actual stone will take you to a page of test-cuts. To help you post designs, there is the Help Page for Design Posting.

Link to competition page. Jump to: navigationsearch. Overview of designs by designer Marco Voltolini.

File:Square Cushion Counterchecker render. File:Resurrection render. File:Will's Pendeloque render. File:Plumeria render. File:Plumeria test cut 1. File:The Alex Experiment - Preserver render. File:The Alex Experiment - Mixer render.

gemcad tutorial

File:Maxwell's Memory render. File:Maxwell's Memory test cut 1.

gemcad tutorial

File:Smith's Story render. File:Star Blossom render.

gemcad tutorial

File:Star Ocean render. File:Star Splendour render. File:Ovals of Fortune - Rainbows render. File:Ovals of Fortune - Antiquity render. File:Ovals of Fortune - Masks render. File:Ovals of Fortune - Surprise render. File:Ovals of Fortune - Surprise test cut 1. File:Astromancer render. File:Crown Imperial render. File:Regal Eye of Zul render. File:Voidwalker render. Category : Pages with broken file links. Navigation menu Personal tools Log in. Namespaces Page Discussion. Views Read View source View history.

Tools All Pages Sandbox. This page was last modified on 20 Februaryat Imitation Gems -Useful Gemology Links! Stephen Challener Geologist Stephen gemologyonline. Time to catch up on reading, lapidary projects and binge watching TV. Stay home. Stay well. Posted: Tue Jan 31, am. Gday All, this is my first post, I have been cutting basic designs for about 2 years now and i am looking to doing some designs of my own as well as manipulating some existing designs for different material that i cut to get best results.

I have had Gemcad for 12 months but i am still struggling with inputting some designs Notibly Ovals. I have been through the base help index and instructions and cant get it to click.

Might just be my thought process and something simple that i am not seeing. I Should mention that this is my 1st outing using CAD software so the knowledge on how this software works is limited.

Posted: Wed Feb 01, am. Hi, I think the easiest way to learn how to use GemCad is reading the manual thoroughly. That said, here is my thought process to draw a barion oval.

I set it with Edit on the tool bar. Here I use I input these in the symmetry boxes on the upper left corner of the GemCad screen. I usually start with a cone to set the center point. This is 8-fold symmetry. From here, it is 2-fold symmetry.

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