Computer numerically controlled. 99%, we’re talking about a CNC mill. Based on models and files we give it, it cuts away at metal to precisely make the part we designed. Our model is the OMIO X8 (https://wcproducts.com/products/omio-cnc-and-accessories).
For now, think of it like a 3D printer, but with a drill taped at the end.
The part that spins. This is where all the work happens. Endmills are attached to this section, and this section moves around the CNC to cut.
The thing that looks like a drill bit. Drill bits are designed to cut vertically, while endmills are for cutting horizontally. Endmills are fastened into the spindle, and what actually cuts the material.
Endmills come in different diameters, flutes, materials, etc. for different applications. Generally, we only worry about 4mm vs. 6mm bits. More on this in Endmills.
The parts that hold endmills in place. If this isn’t tight, your bit might get loose and fall out while milling. More in Endmills.
The big piece of material that’s getting cut into smaller pieces. Stocks get fastened down to the wasteboard so they don’t go flying when getting cut. More on this in Stock, but speaking of wasteboards…
Where the stock and parts are fastened down while milling. Our wasteboards are 10x10x1” boards of MDF, which is basically like fibres of wood mixed with glue. It’s important for your wasteboard to be level, so it’s parallel to the CNC’s axes. Over time, it’ll get roughed up, so every season or so you’ll need to swap it or flip it over to a clean face.
The stepper motors that control the XYZ axes. These generally won’t need much maintenance. Sometimes, a screw in the coupling can get loose and cause what looks like lost steps, so keep that in mind.