Subtraction - Week 11: 4 axis milling
TITLE: Spoon II
DATE: April 13, 2017
INSTRUCTORS: Ben Light
Toolkits: Fusion 360 / Vectorworks / 4 axis mill
This week I keep doing a spoon with a sweep handle. Maybe I should start 100 days of making spoons.
I used both Vectorworks and Fusion 360.
I solved a list of questions about 3D modeling.
1. How to import 3D model from Vectorworks to Fusion 360?
According to the document, the following file types can be imported into Fusion 360:
- Autodesk Alias (*.wire)
- AutoCAD DWG Files (*.dwg)
- Autodesk Fusion 360 Archive Files (*.f3d)
- Autodesk Fusion 360 Toolpath Archive Files (*.cam360)
- Autodesk Inventor Files (*.ipt, *.iam)
- CATIA V5 Files (*.CATProduct, *.CATPart)
- DXF Files (*.dxf)
- FBX (*.fbx)
- IGES (*ige, *iges, *igs)
- NX (*prt)
- OBJ (*.obj)
- Parasolid Binary Files (*.x_b)
- Parasolid Text Files (*.x_t)
- Pro/ENGINEER and Creo Parametric Files (*.asm, *.prt)
- Pro/ENGINEER Granite Files (*.g)
- Pro/ENGINEER Neutral Files(*.neu)
- Rhino Files (*.3dm)
- SAT/SMT Files (*.sab, *.sat, *.smb, *.smt)
- SolidWorks Files (*.prt, *.asm, *.sldprt, *.sldasm)
- STEP Files (*.ste, *.step, *.stp)
- STL Files (*.stl)
- SketchUp Files (*.skp)
Since Fusion 360 went to cloud services, we have to upload files to cloud first in order to import them which is annoying. So a simple way to import is to use STEP Files (*.step, *.stp). Then open a new design from a file in Fusion 360.
There comes another problem: the file straightly import from Vectorworks to Fusion 360 doesn't have the design history bar. If we keep working the file, it would be inconvenient to control the other parts we add on the model.
So we need to create a new file in Fusion 360 and insert the file from Vectorworks to it.
You may probably ask why I need to import files from Vectorworks instead of making the model in Fusion 360. Well, the sweep function in Fusion 360 couldn't give me the beautiful twisted spiral shape when I first tried it. Then Sebastian told me the right feature in Fusion 360 calls coil...
MATERIALS AND TOOLS
To mill the spoon, this time I tried a cylinder. I found a 2‘' diameter pine wood dowel in Home depot. They also have 1’' diameter oak dowel, which is the same price. Since I only got an hour machining time slots, I went for the soft pine dowel, which turned out to be a wise choice.
I used a 1/4'‘ ball head milling bit.
The CAM use diameter as the measurement of dowel, I didn't realize it first and input the radius. I corrected it when I tried change the setting to reduce the cutting time. Always check one more time. The rest part went on pretty well.
The surface is a little rough, and I guess because I chose soft wood in the CAM. I sanded it a little bit and got rid of the tabs.
Bonus, I went to ITProm last night, Leon told me another guy, Charlie Evans, who is also obsessed with spoons. #spooncommunity