Duds
Fri 26 December 2014, 03:21
I made this bracelet for my wife for Christmas. I have called it Omega. I designed it in Fusion360 and used the Fusion360 CAM function to create the GCode. This is the fifth cut. It took a few go's to get the process right. I learned two techniques that made the manufacturing process work.
1. no matter how carefully I measured I had problems with the double sided registration. Omega is 40mm wide and I had to machine it from both sides. I ended up drilling a registration hole right through the material at the origin. I also moved the origin from the outside of the work with all work axes positive to having the origin in the centre of the work. This meant that minor error in registration when working the flip side were halved over having the origin in the bottom right corner outside the work.
2. I tried to machine the piece right through on the side B operation. When the tool broke through the work would break lose and shatter or smash into the tool and shatter. I got the job to work by leaving an onion skin in the middle between each side machine operation. Then I just used an old jewellery screw driver to crack through the onion skin around the outside. And, leaving the onion skin in the middle made the job really robust for sanding. the outside before finishing off the inside.
Surprise and Delight: How flexible and soft it is. Blackbutt is really hard but the design lets the material move and the finished bracelet is almost alive its almost squishy.
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15240
1. no matter how carefully I measured I had problems with the double sided registration. Omega is 40mm wide and I had to machine it from both sides. I ended up drilling a registration hole right through the material at the origin. I also moved the origin from the outside of the work with all work axes positive to having the origin in the centre of the work. This meant that minor error in registration when working the flip side were halved over having the origin in the bottom right corner outside the work.
2. I tried to machine the piece right through on the side B operation. When the tool broke through the work would break lose and shatter or smash into the tool and shatter. I got the job to work by leaving an onion skin in the middle between each side machine operation. Then I just used an old jewellery screw driver to crack through the onion skin around the outside. And, leaving the onion skin in the middle made the job really robust for sanding. the outside before finishing off the inside.
Surprise and Delight: How flexible and soft it is. Blackbutt is really hard but the design lets the material move and the finished bracelet is almost alive its almost squishy.
15236
15237
15238
15239
15240