Very little time. When I lived at home it was every evening until way after my parents went to bed. I ran a virtual production line of restoration (non commercial!) After I left home 20-odd years ago I've done maybe 3 or 4 valved sets and maybe the same in transistor.
The last radio I restored was a DAC90 and I devoted 2 or 3 Friday afternoons at work, by way of a weekend wind-down treat.
I did make a start on a Pye VT4 at home while off work over Christmas 2016. I took the chassis out, filled the spaces where valves had been robbed, and printed-out a large copy of the circuit diagram. Two years later and it's still on the dining room floor, untouched.
Apparently retirement leaves you even more pressed for time!
