In this homework we were tasked with using the Carvey at the OEDK to cnc a shape that we chose from the noun project. I wanted to complete the intermediate level for this assignment which mean I had to engrave the shape, then cut it out from the wood.
At first I wanted to carve out a vector file of an album cover or a monkey, but the geometries were pretty complex and it would have required me to use the 1/16″ bit or to change the bit throughout the process. The 3D printing assignment also taught me how valuable it is to have a shape than can be easily remade if there are errors, especially when there is only one machine that the whole class has to use. Since I have been playing lots of Mariokart Recently, I thought making the coin from Mario/mariokart would be fun.
Mario Coin
I was able to find a noun file for the coin pretty easily but I had to modify it a little before it was ready to carve. I had to remake the outer diameter of the coin as one circle rather than a ring. Then I had to expand the diameter of the outer circle by a little since the 1/8″ bit would carve more into the coin and make the outer lip too small. After his adjustment This was the file that the Carvey would use to cut out my coins.
Coin in Easel.
For my cut, using the flat head bit was the best option since the lower faces of the coin were meant to be flat
Carvey going HAM
After being carved, I sanded the inside faces and outside edges a bit to remove any lingering sawdust and smooth out the edges before spray painting.
Sanded Coin
Spray Painted Coin
I spray Painted a few coats of yellow then clear coated the pieces afterwards. I am pretty happy with the way these turned out. The. piece of plywood I used had a hole trough its which made on e of the coins look a little worse form the sides but. there were no other pieces of plywood like the one that I had used so I kept it to maintain consistency of the wood.
Final Coins
Cost Analysis:
Labor: 2 hours x $15 an hour = $30
Machine time:
Carvey rental rate: $40/hour x 45 Minutes = $30
Materials:
Plywood$1.92/ft x 1 ft = $1.92
Total Cost: $61.92
This was my least expensive assignment due to the labor time being so low. GTHis is likely due to me not failing multiple times in this assignment like previous ones and I am now more comfortable with using most tools in the OEDK.
https://www.manufacturing.net/technology/article/13245730/cnc-machining-is-more-accessible-than-you-may-think
https://www.homedepot.com/p/Poplar-Board-Common-1-in-x-6-in-x-R-L-Actual-0-75-in-x-5-5-in-x-R-L-21065/302006547
