assignments

Assignment

Group Assignment: test the design rules for your 3D printer(s)

Document your work on the group work page and reflect on your individual page what you learned about characteristics of your printer(s)

Individual Assignment: design and 3D print an object (small, few cm3, limited by printer time) that could not be made subtractively

3D scan an object (and optionally print it)

All the important links are Here

Learning outcomes

Identify the advantages and limitations of 3D printing

Apply design methods and production processes to show your understanding of 3D printing.

Demonstrate how scanning technology can be used to digitize object(s)

Subtractive and Additive manufacturing

Additive Manufacturing

Definition: Building objects layer by layer from digital models

Process: Adding material where needed using 3D printing technology.

Waste:Produces less waste as it uses only necessary material.

Advantages:Allows for greater design complexity and customization.

Subtractive Manufacturing

Definition: Removing material from a solid block to create a desired shape.

Process: Cutting away material using tools like lathes or mills.

Waste:Generates significant waste

Advantages: Limited complexity and design intricacy.

3-D Printer

This is the 3-D Printer we have at our lab.

This is a labelled diagram of it.

Group Assignment

Group Assignment: test the design rules for your 3D printer(s)

Document your work on the group work page and reflect on your individual page what you learned about characteristics of your printer(s)

For the design rules test, we use the All in one design rules checker

Here is me and my team with the design rule model

There were four tests we learned on this all in one design rule test.

1.Hole and Diameter Test:

Hole test: Text visibility affected by gaps, circles turned out well.

Diameter test: Circles printed nicely without shakiness.

Conclusion: Machine works well for diameters, gaps affect text clarity.

2.Bridging Test:

Hole test: Text visibility affected by gaps, circles turned out well.

Diameter test: Circles printed nicely without shakiness.

Conclusion: Machine works well for diameters, gaps affect text clarity.

3.Overhang Test:

Printer struggled beyond 60-degree overhangs, sagging observed.

Conclusion: Printer performed well up to certain angles, optimization needed.

4.Vertical Pillar Test:

Filament deposition became shaky as pillar height increased.

Conclusion: Issues with consistency and smoothness, calibration adjustments necessary.

For more information, please visit our Group Assignment page

Individual Assignment

Design and 3-D print an object that could not be made subtractively

Idea

I looked into many other previous assignments and I found that many people made keychains, jewelry and minidecorative items, So I chose a Gyroscope keychain

Designing process

The body is created using only two commands. Set up user parameters to drive thickness and clearance, followed by sketching the side profile. Set up user parameters to drive thickness and clearance, followed by sketching the side profile.

I will be using the revolve tool to create the 3d bodies.

Add parameters from the modify drop down menu.We'll type out ring thickness for the name, Keep in mind we can change this parameter value at any time.

We'll start by sketching a line from the origin point running vertically.

We'll need to sketch out a curved using the threepoint arc command. Place the three points of the arc without adding dimensions.

We'll start with a midpoint constraint, followed by the center point of the arc.And the midpoint of the construction line.This will constrain the arc so it's always centered

We can then apply a horizontal constraint to the end of the arc and the end of the construction line, making sure this is done to both sides. You'll find that our sketch is not yet fully defined. We can still drag the arc left and right

We can now use the offset sketch command to offset the existing curvature.However, you'll find the offset geometry does not extend to the top and bottom, As we'll select the offset icon and delete it.We can instead use a sketch dimension to apply a dimension between these two arcs using our ring thickness parameter for the value because we deleted the offset relationship, we can apply horizontal constraints to each endpoint.

Note that we'll need to turn off the chain selection option in the dialog as we only want the individual arc segment to offset, not the entire profile. Once again, we'll delete the offset relationship, so we'll simply drag the arc to.

We can now activate the revolve command.

Lastly, sketch a rectangle and extrusion to make the keychain portion.

Fillet

End design

The 3D model

Printing!

Making adjustments during a print

I adjusted the speed to 20, and started slow.

Started the print

Result!

Me with the printed design

3-D Scanning

What I scanned

This is a bhutanese sculpture, sculpted from a mold by one of the students at my academy. It is a sculpture of Moley(princess).The Dance of the Princes and Princesses, known as Pholey Moley in which Molay is the sculpture i scanned, is a beloved Bhutanese dance. It tells the story of jealousy among queens and reconciliation between King Norzang and his favorite queen, Yidrogma. In a popular version, two princes return from war to find their wives engaged in playful activities with atsaras. The princes punish their wives by cutting off their noses, but eventually regret their actions and seek a doctor to sew them back on, leading to reconciliation and a happy ending. This dance is performed during tshechu which is a celebration in Bhutan.

Week 5