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My first steps as a DIY oriented, freelancer Anatomy Assistant Professor

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valchanov

The protection of the intellectual property of the 3D models can be a serious issue for every 3D modeler. It sucks when your model is posted for selling at a webside without your consent with a juicy price and you're gaining NOTHING from it. Some 3D artists are adding watermarks to their models, which can be easily removed by an amateur with a free surface modelling program (Meshmixer, Meshlab etc.). But there is an easy solution for this injustice - an invisible watermark. On Watermark3D you can add such watermark, incorporated into the mesh of your 3D model itself, which is hard for removing and can be checked on the same website during an intellectual property dispute. For the removing of the watermark you have to remesh the whole model, which will decrease the overall quality of the model substantially. I hope that I'll spare you the pain, which I experienced recently. Enjoy :)

valchanov

Atlas and Axis, 3D PDF

Hello

My recent anatomy projects forced me to start importing my 3d models into 3d pdf documents. So I'll share with you some of my findings.

The positive things about 3d pdf's are:

1. You can import a big sized 3d model and compress it into a small 3d pdf. 40 Mb stl model is converted into 750 Kb pdf.

2. You can run the 3d pdf on every computer with the recent versions of Adobe Acrobat Reader. Which means literally EVERY computer.

3. You can rotate, pan, zoom in and zoom out 3d models in the 3d pdf. You can add some simple animations like spinning, sequence animations and explosion of multi component models.

4. You can add colors to the models and to create a 3d scene.

5. You can upload it on a website and it can be viewed in the browser (if Adobe Acrobat Reader is installed).

The negative things are:

1. Adobe Reader is a buggy 3d viewer. If you import a big model (bigger than 50 Mb) and your computer is business class (core I3 or I5, 4 Gb ram, integrated video card), you'll experience some nasty lag and the animation will look terrible. On the same computer regular 3d viewer will do the trick much better.

2. You can experience some difficulties with multi component models. During the rotation, some of the components will disappear, others will change their color. Also the model navigation toolbar is somewhat hard to control.

3. The transparent and wireframe polygon are not as good as in the regular 3d viewers.

The conclusion:

If you want to demonstrate your models to a large audience, to sent it via email and to observe them on every computer, 3d pdf is your format. For a presentation it's better to use a regular 3d viewer, even the portable ones will do the trick. But if the performance is not the goal, 3d pdf's  are a good alternative.

Here is a model of atlas and axis as 3d pfg: https://www.dropbox.com/s/2gm7occq5ur50um/vertebra.pdf?dl=0

Best regards,

Peter

 

vertebra.png

valchanov

Hello
This is my first 3D print. I used a 3D model of a kidney, which I made myself from a renal angiography. I printed it with one of my engineer geek friends using a Prusa i3 self-made 3d printer, 0,2 mm nozzle, 0,2mm layer thickness and PLA as material. This was my entering demonstration, which gave me an assignment as a freelancer anatomy assistant professor.

 

My ambitions are to use 2D and 3D models, along with the traditional cadaver techniques in my work as an anatomy teacher and to teach my students how to do it with their own hands. I have 12 years of experience as an internal physician in ER, 4 years as a psychiatrist, 3 years as an acupuncturist and a lifetime as an IT GEEK, I don't have any teaching experience, my english language skills are a bit rusty and I don't know what will come from this, but I'm eager to find out. Wish me luck:)