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Drilling stainless steel often causes problems, so hopefully the following video guide may be of some use.

The main point really is the need to use a good drill bit, and then also a small bit on technique.

Click here to download in AVI video format



Finally the 35L Thermos pot with all holes drilled from the pilot holes using hole cutters and Q-Max punches

Thermos pot holes drilled

and with the fixed head thermometer and ball valve fitted

Thermos sunken thermometer fitted