I used Inventor to create the rough outline for the maze, then I dimensioned it to how big I wanted it to be and rounded out the sharp corners. I extruded it 3/4", then I added the circles on the inside making sure they have a 5/16" width all around. Next I use the line tool to create paths to follow to create a maze, and used the trim tool to connect and cut out all the paths. Then I decided to remove the handles on the maze so I created a new sketch and outlined the handles and cut them out. Finally I extruded the channels 1/4" down.
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This is the maze in Fusion 360, the stock is 8" x 11" and with a height of 3/4". The last photo is the simulation showing the toolpaths the CNC router will take when carving out the maze. The maze uses a 2D contour to carve it out instead of a 3D adaptive clearing.
The photo with the green is showing the stock and that is the simulation showing how the machine will cut out the maze.
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I plugged my flash drive into the computer and opened the G code file. Then I went to jog in the bottom right corner, I used the X, Y, and Z coordinates to move the drill bit to the center of my foam piece. Then I reset the X, Y, and Z values and hit start.
Before pressing start I also made sure to check how many times the bit went around the outer edge, so it wouldn't drill the wood underneath. |