I have been trying to select motors for my build and can easily find motor around 50oz in for around 10gbp however I am wondering if that is enough torque. Otherwise I have found these (edit: I put the wrong link before)
NEMA 17 2 Phase Mill Robot Lathe CNC Stepper Motor 48mm 1.5A 107oz.in https://www.amazon.co.uk/dp/B00KKKP9CE/ref=cm_sw_r_cp_apa_HuBQxbABNQC3J
but I am not sure if they are a bit overkill and they might be too deep (also quite a bit more expensive).
As always thanks for any thoughts, I really appreciate the effort you put into supporting your awesome design!
Also, for anyone in the UK I ended up finding the conduit at screwfix and it seems like it will do the job:http://www.screwfix.com/p/deta-class-4-conduit-tube-galvanised-25mm-x-3m/7442j