The usual family stuff etc has really slowed my build down but I managed to pull my finger out and eventually get cracked on with the mash tun over the last couple of weeks. Skiptonion, who lives just down the road from me has a 70l version of the thermo pot mash tun, mine is 50l but fortunately they are the same diameter so a simple tracing excersise saved me quite a bit of effort and measuring!
Jonty,
What diameter did you have to cut for the bottom of the 50L thermopot that allowed for a beer line seal?
I'm planning to make a template first to check and then cut round that with an angle grinder, but am finding it difficult to get in and get a decent measurement with the tape measure.