Tuesday, February 5, 2019

CAM and Slicer Software

CAM and Slicer Software

 Lecture


Computer Aided Machine


The computer aided machine or CAM creates tiny little paths to create a 3D object. The slicing program is the program that you run to set up the machine such as additive or subtractive. We are working in an additive which adds material to build a model vs a CNC that would subtract from a block of material. An extruder extrudes plastic from its nozzle to create layers. FDM (Fused Deposition Modeling) heats up material to its plastic state and when its hot enough fuses each layer to another. A vat of polymerization material ( to make a liquid harden or stable) monomers... when you apply enough energy to polymer it changes upon the interaction of energy (UV). This process is called SLA or Stereolithography. It creates a higher resolution and finishes when creating a model. FDM creates ridges because the layers do not quite meld together. We will be using FDM for drafting and the final files will be in SLA. FDM offers cheaper material options than most SLA processes. 


MakerBot


Not all 3D modeling programs are equivalent. The MakerBot software uses the Z when orientating an imported model whereas other CAD software may use other orientation presets. You can use the rotation selection to correct any orientation issues and you can type in the coordinates to arrange a print. We do not want a slice to go absolutely parallel to the ground plane. On an organic figure, you will get a better print and the lines will start to disappear if the model is at an angle. The scale tool allows you to get to a maximum volume of the machines workspace. The footprint is the limit that the extruder can go or where the machine can build a model. With the model selected there are options within the drop menu features. You can copy and paste, change your view, and etc... There is a File option to save to a file type or add sample prints to the workspace. 
You can use the print preview to check the model support structures. The green represents the models and the orange color represents the structural supports. It also illustrates the travel moves and layer height. You can grab the scroll tool on the left-hand side to evaluate the model's creation. The print preview gives you an estimated time for completion and the amount of material needed for the print job.

Mesh Modeling

Meshmixer

A method that describes a series of triangles.
1. Direction of the Face (normal)
2. Co-Planar- triangles have to share a plane or a single wall... if not then there can be a problem
3. Move from the abstract of a primitive shape into something that is similar in nature.
4. Meshmixer allows the user to collage 3D samples...

Meshmixer Work Space
1. Looks simple but has a series of powerful tool
2. File Menu- limited
3. All the tools used are on the left menu bar...
4. You will notice at the top right that there is a navigation tool (similar to all AutoDesk products)
5. Has the Stanford bunny (used when early 3D modeling was created)
6. You can turn on wire mesh under view
7. Also under view is the objects browser that allows the user specific ability to manipulate a specific object.
8. The objects browser has a visibility icon that looks like an eye that can be turned on an off...
9. There are two types of objects that can be 3D modeled: water tight and open type
10. If you see a pink color that is striped then the normal is flipped
11. A blue line will illustrate a boundary edge. It can be an open type model that is still printable
12. To recenter your model, go to view and recenter view
13. C key will also recenter the view on that object
14. You can zoom in with the mouse wheel...
15. Holding the mouse wheel and alt key then you pan
16. Left mouse key will allow you to orbit or shift and mouse wheel
17. Select Menu, brush and lasso
18. You can manipulate the size of the brush
19. You can use the left mouse button and hold down and paint (under selection)
20. With the sphere brush it will capture all faces within the spheres area
21. With the object selected you can: discard, erase and fill, reverse normal's, etc...
22. If you erase and fill then options will appear: flat fill, resmesh, refine, smooth, scale, it will create a new mesh group that will be assigned a color to that area...
23. Mesh mix offers different models that can be meshed back into the model...or not...
24. You can drag and drop the new mesh mix object onto the workspace...
25.  The control interface will allow you to twist planes (outer circle) move the object (center sphere) or resize with the arrow tool...
26. Will ask for the math? Coils is default, optimize ...will make a new mesh group (new color)...Accept and it creates one continuances volume...
27. Meshmixer has the ability to reduce the triangles and faces of the model
28. Selection--->reduce--->lower the amount of triangles visible of the mode.
29. Use the transform under edit and position the model ( can scale it, twist on different axis or stretch)
30. On the Transform tool you have Local:coordinates or World: coordinates
31.  You have snap to snap to coordinate or click on absolute to move freely...
32. To be continued

Tuesday, January 15, 2019

Monday, January 14, 2019

'The Work of Art in the Age of Mechanical Reproduction' by Walter Benjamin

Walter Benjamin 1935 writings in 'The Work of Art in the Age of Mechanical Reproduction' resonates truth in the 21st century. I agree with a lot of the points that he makes on our reproduction methods. The first statement that caught my attention is when he states; 'In all the arts there is a physical component which can no longer be considered or treated as it used to be, which cannot remain unaffected by our modern knowledge and power.' pg. 1 I agree with this sentiment because as industrialization, communication, population growth continue to change and impact our world so does the technology made to support it. Artist have two choices and becoming stagnant and unresponsive to these changes will only create more problems within the criticism of art.

Benjamin talks about how we would abolish capitalism if we were to embrace these modern methods. It use to be that it was a norm to reproduce a piece of art. We have always copied each other throughout time and history. It wasn't until recently that reproducing or imitating has become a serious treatment of art. He further shares how lithography techniques help deliver a more direct form of reprinting, creating and keeping up with historical events or simply sharing/passing along information.  The old print processes were all done by hand and created a very slow and dated delivery method for imagery, speech and written languages.

With the introduction of photography and film, we now had the ability to share the original works of art to 'beholders' anywhere.  The cathedral, the painting, the mosaic, the fresco, the sculpture could stay in place while the copy was shown around the world via modern technology. Benjamin says 'And in permitting the reproduction to meet the beholder or listener in his own particular situation, it reactivates the object reproduced.'pg. 3 I understand that some may feel that copying an original and moving from its station is not the same as witnessing it where the artist may have attended but I believe that it is an artist prerogative and most definitely it is a social and cultural variance in how the object or art is perceived so therefore, why does it matter where, how, or what is used to show a work. I believe it does not...

He quotes Marinetti and his manifesto on the Ethiopian colonial war: 'Poets and artists of Futurism!... remember these principles of an aesthetics of war so that your struggle for new literature and a new graphic art... may be illumined by them!' pg. 15 I believe that it is conflict and pain and love that makes an artist sing or create. We need to be Dadaist, Surrealist, Modernist, Renaissance and today's Contemporary artist in order to deliver the news of what we see and feel and share it with everyone. The most important thing is to have no limits...no fear...I recently watched the movie 'Ashes' which tells the story of Salvidor Dali the surrealist and one of my favorite painters. I end this review with his final thought about the institutionalization of art and art criticism. He simply states that he would no longer allow deadmen to dictate or tell him what art is... He was better than they were because he simply was not afraid to try something new...He left Spain and worked with Picasso and Carlos Casagemas and is now known for his works as a surrealist. He used everything that was not nailed down to make his art. It worked...

6 Designs in Fusion 360

6 Designs in Fusion 360

Ornament

Diamond Ring

Candle Holder

Mushroom Candle Holder

Organic Sphere
Goblet


Fusion 360 Lecture

Fusion 360 Lecture


Fusion 360 is a Solid Modeler. It is a powerful program that sits on your PC that utilizing cloud computing to support your design needs.  Similar to Adobe's new cloud file system that includes the ability of sharing. Fusion is also known as to as a parametric modeler. As you model it keeps a timeline and record your changes as you make them. Some functions are on your PC while others are built into the cloud system. Your work space can be modified so that it suits you in a good way. 

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We are able to use most primitive shapes such as spheres, box, cylinder, torus, pipes and coils to create a model or design.

You can also create forms that are organic using the create form option on the top menu bar.


This is a snip_it but you can directly save the model as an image under file icon/capture image. You can choose the file type such as .png or .jpg
This a sample of the captured image.



You can access your cloud files using the data panel on the top left of the menu bar. It looks like a key pad.