The Thruster Assembly
Step 5

MATERIALS: 3 Drilled Film cans Wax (Anchor bowl ring, *one ring pots about6 motors) Elctrical tape Sealed motors Rubbing alcohol Paper towels TOOLS: 2 Metal cups Lead Sinkers Electric hotplate Potting holder Pliers

Figure 11D. Motor placed into wax

PROCEDURE:

1. Fill electric hotplate with SMALL amount of water (1/2"), turn on to lowest heat setting.
2. Place lead sinkers along with wax into the2 metal cups, place cups into hotplate. The wax will melt slowly. (Fig 11A)
3. Put electrical tape over the holes on the 3 film cans. (Fig 11B)
4. Once the wax has melted, fill the film can about 1/4" (not more!). USE PLIERS TO GRAB HOT METAL CUP! (Fig 11C)
5. Place sealed motor in the wax, push the motor shaft through the hole in the bottom of the film can. This must be done relatively quickly, as the wax cools and hardens rapidly when the cold motor touches it (Fig 11D).
6. Wipe off motor shaft with rubbing alcohol and a paper towel.
   
   

   A. Melted wax in metal cups with sinkers		B. Film cans with tape over holes
   C. Film can partially filled with wax		D. Motor placed into wax