Wednesday, October 26, 2016

Fromlabs / More Rhino / CALIPERS




NEW RHINO TOOLS! 

Variable offset fillet/chamfer Surface from curve network
Record history
Block instances
Extend curve/extend surface
Fillet surface


DESIGN REVIEW
Duplication (measure and model)
Grouping, polygon count, closing model
Reducing poly count/Increasing poly count
File preparation,
Nesting Files in Print area
Show naked edges
Introduction to departmental 3D printing
Outsourcing/Shapeways/Kraftwerks/imatrialise
Form 2



Make a ring. 

Your CASE by CASE project should be no bigger than 

2.75" x 2.75" x 2.75"
























































Stereolithography (SLA)


145 × 145 × 175 mm
5.7 × 5.7 × 6.9 in


Resolution

25, 50, 100 microns
0.001, 0.002, 0.004 inches





Minimum Supported Wall Thickness

Recommended: 0.4 mm

A supported wall is one that is connected to other walls on two or more sides. A supported wall smaller than 0.4 mm may warp during the peel process.


Minimum Unsupported Wall Thickness

Recommended: 0.6 mm



An unsupported wall is one that is connected to other walls on fewer than two sides. An unsupported wall that is smaller than 0.6 mm may warp or detach from the model during printing.


Maximum Unsupported Overhang Length

Recommended: 1.0 mm

An overhang refers to a part of the model that sticks out horizontally parallel to the build platform. Printing such features without supports is discouraged, as the layers cannot maintain their structure. Horizontal overhangs will be slightly deformed beyond 1 mm and become increasingly deformed as the length of the overhang increases. You can turn on “internal supports” in PreForm to ensure your overhangs are supported.


Minimum Unsupported Overhang Angle

Recommended: 19° from level

(35 mm long × 10 mm wide × 3 mm thick)
The overhang angle refers to the angle from horizontal that the overhang sticks out. Printing at an angle less than 19° could cause the overhang to break off the model during the peel process. Rotate your part so flat surfaces can be held up by supports if they are not already self-supporting. See the “Print Flat Surfaces at an Angle” section of our Model Orientation article.

Maximum Horizontal Support Span/Bridge

Recommended: 21 mm

(5 mm width × 3 mm thick)
A span is the distance between two intermediate supports of a structure. While printing horizontal spans is discouraged, certain geometries print well. For a 5 mm wide and 3 mm thick beam, spans longer than 21 mm are likely to fail. Wider beams must be kept shorter to avoid breaking during the peeling process.


Minimum Vertical-Wire Diameter

Recommended: 0.3 mm (7 mm tall) to 1.5 mm (30 mm tall)

A wire is a feature whose length is greater than two times its width. The ratio is key to printing wires; at 0.3 mm thickness you can print up to 7 mm tall before you start to see waving. 1.5 mm wires can get up to 30 mm tall without defects.


Minimum Embossed Detail

Recommended: 0.1 mm

Embossed details are shallow raised features on your model, such as text. Details smaller than 0.1 mm in thickness and in height may not be visible on your print.


Minimum Engraved Detail

Recommended: 0.4 mm

Engraved details are imprinted or recessed features on your model. Details recessed less than 0.4 mm in thickness and in height may not be visible because they will be fused with the rest of the model during the print process.

Minimum Clearance

Recommended: 0.5 mm

Clearance is the amount of distance needed between two moving parts of a model (e.g., the distance between gears or joints). A clearance of less than 0.5 mm may cause parts to fuse.


Minimum Hole Diameter

Recommended: 0.5 mm

Holes with a diameter less than 0.5 mm in the x, y, and z axes may close off during printing.


Minimum Drain Hole Diameter

Recommended: 3.5 mm diameter

Drain holes are recommended for resin to escape in models that are a fully enclosed cavity (like a hollow sphere or hollow cylinder printed directly on the build platform). Without drain holes of at least 3.5 mm in diameter, the part may trap resin and lead to an explosion of the print.

Wednesday, October 12, 2016

Rendering



Review tools
Make 2d

New Tools
Rebuild/control points
offset surface
Rendering (Rhino Render)
Materials
lights
Printing (saving as PDF)
Dimensions
flow along surface
drape


For the midterm:
you should have a minimum of six sheets. You should have three layout drawings and three renders. These files should be printed on 8.5 x 11 high quality paper. You may have to find a place on campus to print at a higher quality. You may want to use photoshop, to help montage or edit your renders prior to printing. Before the midterm review email (or dropbox) me your Rhino file and your original photograph. 




CASE by CASE (three week project)

Assignment brief:      
As humans we naturally put things in to categories, compartmentalize our surroundings and even organize objects within objects.  A container is usually defined as an object that can be used to hold or transport something. Design and fabricate a wearable container. Choose an object that, in your opinion needs a case/container. Use Rhino, laser cutting or 3D printing to create a housing/external case that changes the original objects meaning.     

Learning outcomes:           
Students will use Rhino to model and render a wearable that contains an object. Students will 
have better understanding of measuring and modeling by accurately duplicating a real-world object.

Skills list:                                                      
Advanced Rhino modeling techniques and 3D printing

Concept:                                
Learn how to accurately model an object and create a holder or case for that object.

Research:                                
Do your research.  Find packaging.  Look at suitcases/pelican cases.  Look at blister packs. How much volume 
of material is needed? Look at high-end liquor packaging.  What happens when the contents are consumed?

Questions:
How would you define a container?
Does making a container for an object make it precious?
How can a container be more than a container?  
What would dictate the outside shape of a container?
What are you containing?
What percentage of an object needs to be covered in order to define something as “contained”?
When a container acts as a protective covering why aren’t objects designed to require a container?
Does your object have to come out? OR is it a break glass in case of an emergency type of object.


Wednesday, October 5, 2016

Tool Review/ New Tools/ workday




Spoons and objects (RINGS)  


Review:

Extract isocurves 
Extract silhouettes 
Contour:
Text object: 


New Tools:

Make2D:
Scale: 2D, 3D 
Hide: Show
Lock: Unlock
Loft: 
Revolve:
Rail revolve:
Sweep1:
Sweep2:
Chamfer surfaces: 
Fillet surfaces: 
Control points:  Selecting control points 
Nudge: 
Unroll developable surface 
Make 2D:
Object properties: Material > basic, texture, gloss, transparency, environment