Shopping List

• All-Thread #6-32 1/8” (OD). Home Depot sells this in 12-or 36-inch lengths, but you will only need a 5 5/8-inch section. The Home Depot SKU# is 030699169603 for the 1-foot length and costs $0.76. The SKU# is 030699172801 for the 3-foot length and costs $2.19. (Figure D.1.)

  Figure D.1. All-thread #6-32, 1/8” OD.

  

• Nylon Lock Nuts. Home Depot sells these in packs of four, but you will need only two. The SKU# is 030699192311 and costs $0.88. (Figure D.2.)

  Figure D.2. Nylon lock nuts.

  

• 1” Fender Washers (1/8” ID). You will need only five, but Home Depot sells these in packs of eight. The SKU# is 3069920818 and costs $0.88. (Figure D.3.)

  Figure D.3. Fender washers.

  

• Copper Tubing, (1/4” OD). You will need only about 6 inches of tubing. Home Depot generally sells this by the foot in the plumbing department, or in packs of 10 or 20 feet. (Figure D.4.)

  Figure D.4. Copper tubing.

  

• A panel mount (a.k.a. chassis mount) N-Connector. These can usually be purchased at an electronics supply house. They range in price (and quality) from $1.50 to $6.00 depending on where you buy them and the quantity you purchase. (Figures D.5a and D.5b.)

  Figure D.5. Copper tubing.

  

• 12-gauge solid copper wire. You will need 1.5 inches of wire. Home Depot sells this by the foot for $0.10 per foot. The SKU# is 650-481, Yellow 12G Solid. (Figure D.6.)

  Figure D.6. Copper wire.

  

• 1/4” x 5/16” tee nut, coarse thread (zinc). You will only need one, but Home Depot sells these in packs of 4 for $0.88. The SKU# is 030699188918. (Figure D.7.)

  Figure D.7. Tee nuts.

  

• An empty can of Pringles^®.