|Completed proton pack|
On the inside of the tortilla bowl, mark with a Sharpie where with the circles will be drilled. Drill them out on the inside of the bowl as well. When you drill them out, depending on the surface you're working on, you may need to use a piece of scrap wood underneath for surface protection. If you do this, you can use that scrap piece of wood later on for the top part of the proton pack spacer.
I didn't think the tortilla bowl by itself was quite large enough, so I set it on top of the plastic dome lid of a fruit tray from the grocery store, to make it appear larger. This is where I realized I needed to build the entire pack up to make it look deeper.
Get a small wooden disk or round plastic container (something with a flat base because a label will go on there later), and use the Liquid Nails to attach it to the Cyclotron, towards the bottom (at about 5 o'clock). This is going to be the N filter. I used a small peanut butter to-go cup for this.
On the Cyclotron, once it's painted, attach the washers over the outside of the holes. Use electrical tape to attach a piece of red plastic folder to the inside of the tortilla bowl.