On this episode of EDES 210, we were tasked with utilizing a CNC machine on a block of wood.

The process to create the G Code was relatively straightforward. I just needed to import any designs I wanted into carbide create, and used the built in shape maker for the contour cut. I elected to make a little coaster with a fish carved out in the middle. I had to make sure the contour cut was exactly the depth of my block of wood using a caliper, and chose to make the pocket cut .2″ deep. After adding some tabs so the block wouldn’t spin away and ordering the pocket cut first, the file was ready to export.

Setting up the CNC machine was also pretty easy after Luke’s tutorial. I just needed to secure a piece of sacrificial wood on the mount provided, and lock the wood into place. Then, I taped the homing device on the bottom left corner of the block as specified during the G Code’s creation. I followed the steps to jog and probe so the machine would be fully calibrated. After that, all that was left was to start and monitor the cut.

Both of my fish cut without much of a problem, and I made sure to push down towards the tabs to make sure I didn’t chip the piece. After hitting all sides and crevices of the coaster with 140 and 400 grit sandpaper, I opted to finish with two coats of beeswax upon recommendation from a friend.

Above is the piece of cardboard I sanded and finished the coaster on, after I dusted away the dust.

COST:

Plank of 4″x1″ wood: $5

Machine rental: $50/hr

Howard Beeswax: $10

TOTAL: $65