User talk:Sjournot

Question about your image
That's some very good machining for your aluminum truncated icosahedron (File:Truncated_icosahedron_by_Sean_Journot.jpg). Could you share more about it pls? How are the individual pieces shaped and how do they fit together? Was it mostly cut out of sheet (e.g., waterjet cutting) or was it made differently? Was it artwork or does it have a function beyond appearance (rather intricate holes/mounting points)? -- 173.150.213.44 (talk) 02:16, 14 May 2015 (UTC)

No it has no function, it was my final project when I was in a precision matching program. I added the extra holes and counter bores in case I every thought up a purpose for it, and they made it easier to machine. It was made on a Haas horizontal mill and a Haas 5 axis mill with a total of 4 setups. It was almost 30 hours of machine time to cut since I had to slowly pencil the radii with a ball end mill. Each face is a seperate part, there are only two part designs. It took awhile to assemble I think it had nearly 200 bolts. I ended up making two of them; one is currently with mastercam and they show it at trade shows, the second is on display in the machine shop at Renton tech. The pieces are shaped like projections from the centeroid of the object onto the faces, so each side is angled, nothing is a square 90 degrees.