Creating 3D Objects

#Tools

Fusion 360 https://www.autodesk.com.au/products/fusion-360/

Free for non-commercial and learning use. (Installed on Mac Laptop)

Shortcuts:

  • S=Model Toolbox
  • Q=Push/Pull
  • C=Circle
  • D=Dimension
  • L=Line
  • X=Construction
  • P=Project
  • Ctrl+Z=Undo
  • J=Joint

Free Courses to learn interface:

https://help.autodesk.com/view/fusion360/ENU/courses/AP-BODIES-COMPONENTS-GS

Videos:

Creating Objects:

Dimond Boat in Fusion 360

TODO - Record the below in a Video.

Rectangle Box in Fusion 360

  • Make sure to be in Design mode
  • Units is mm
  • s New Component
  • Give it a Name - myBox
  • Make sure it’s Active
  • Turn on Origin (Click Triangle on New Component then click eye on Origin)
    • Or use keyboard down arrow to select the component. Then Right to open the folder. Then Down to select the Origin. Then “v” to enable View of the Origin.
  • s sketch (Create Sketch) (or right click on plane and select create sketch)
  • select the plane (base for me)
  • s center (then select Center Rectangle)
  • Select the centre point with mouse (need to learn hot key)
  • move the mouse away from the centre until the size boxes are displayed.
  • Use the TAB key to switch between each size box and enter the size in mm then return.
  • s fin (Finish Sketch)
  • s Extrude
  • Select face, or in this case the rectangle. Enter the value then return key.
  • Done, we have a large box!

Rectangle Box Expert:

  • s New Component
  • Use the keyboard down arrow to select the component. Then Right to open the folder. Then Down to select the Origin. Then “v” to enable View of the Origin.
  • s sketch then select the plane (base for me)
  • s center (then select Center Rectangle) then Select the centre point
  • mouse away from the centre until the size boxes are displayed. then TAB then Return
  • s fin (Finish Sketch)
  • s extrude
  • Select face, or in this case the rectangle. Enter the value then return key.

Filament rolls: Snapmaker Red PETG filament 1kg https://www.amazon.com/1-75mm-PETG-Printer-Filament-Spool/dp/B08QMWMMM1?th=1 The recommended printing temperature is 190 ℃–210 ℃. Start with a low print speed of around 15mm per second

PLA vs PETG:

Polylactic Acid (PLA) is a type of polyester plastic.

  • It is naturally derived from cornstarch and is biodegradable.
  • PLA can be used to print without a heated bed.
  • It does not soak up moisture

Polyethylene terephthalate glycol-modified (PETG), has physical properties like ABS, which makes it a perfect 3D printing filament.

  • PETG is reasonably durable and can withstand some damage because it is also flexible
  • Is heat resistant with a glass transition temperature of about 80 degrees Celsius.
  • Highly hygroscopic and absorbs moisture when left in damp conditions.
  • Stringing is an issue. This situation happens when small residues (parts of plastic) are left on the print item.
  • PETG leaves print surfaces with a luminous appearance hence not very attractive like PLA.
  • Materials printed using PETG appear to have scars if the light is reflected on their surfaces.
  • Physical strength is higher in PETG materials
  • PETG objects are more tolerant of high-temperature ranges and remain undamaged
  • PETG parts are suitable for outdoor use because they are durable and can withstand high-temperature ranges than PLA parts.
  • Has the same chemical composition as polyethylene terephthalate (PET).
  • PETG printing filament is used in making food packaging because it is more compatible with food and assures safety.
  • PETG requires a heating plate to prevent it from warping

Printing PETG:

  • start with a low print speed of around 15mm per second
  • The standard print temperature should range between 220 degrees Celsius and 250 degrees Celsius
  • print bed temperature being somewhere between 50 degrees Celsius and 75 degrees Celsius.

Last modified July 23, 2024: Page Update (f267ed7)