How to build a thermoelectric lamp

Step 3 Cut the candle door

Next you need to cut the hole for the candle in the side of the can this should be around 30 - 35mm by about 50mm long. I started by drilling a small hole and worked from there using the tin snips. After this you can drill the ventilation holes all the way around the top of the can. I used a 3mm drill bit for this.
Make sure you sand all the edges so you can't cut yourself on the metal!