igloo preparation
1. removed wheels and handles
2. started bending copper tubing to fit igloo
3. continued in zig-zag pattern
4. replicated steps 2 & 3 for return
5. soldered together with 3rd short u-turn
6. drilled holes to allow exit of tubing, pump power cord, and temperature probe
7. cut and assembled rectangular shape of cpvc pipe for coolant circulation

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