10. Modeling and casting¶
TODO List¶
- Group assignment:
- Review the safety data sheets for each of your molding and casting materials
- Make and compare test casts with each of them
- Individual assignment:
- Design a 3D mould around the stock and tooling that you’ll be using, mill it (rough cut + (at least) three-axis finish cut), and use it to cast parts.
Bird house¶
Design¶
I use Fusion360 to make a bird house:
Add the outside holder to it :
The problem of the model:
- All the surfaces goes straight down to the bottom.
Use the new function called Draft(SOLID>MODIFY>DRAFT) to rotate the wall with a 5 degree angle.
- The under part of the roof might not cut well.
To fix this problem, I use the fillet to change the under roof angles into round.
Mods¶
Use mods to simulate the cut process. The process will be too parts: rough cut and final cut.
Rough cut¶
Final Cut¶
https://fabacademy.org/2022/labs/kannai/Instruction/tips/wax_milling_mods/
3D printer test¶
3D printer issue¶
The Z-index is not set properly, so the first 10-20 layers will not come out. So every time when I try to stop or pause the printer, the 200 degree nozzle will hit the bed and leave a hole on it.
The fix is to adjust this screw a little up and rotate Z-axis until the nozzle hit the bed properly, not too much.
Brick¶
The bricks we will use is size: 36mm92mm142mm.
Endmill¶
Roughcut 3mm endmill Finishing cut 1mm endmill 1mm ball end