Sancho is a Spanish name and it means Saint. In slang it means the other man, a guy a girl is cheating with. Sancho means sancho in English as well as Spanish. Pearl Yamada.
The general rule of thumb for a horizontal smoker is that the firebox should be 1/3 the size (volume) of the cooking chamber. These are just guidelines based on years building smokers but your mileage may vary! Cooker Chamber Type & Size.
Have the nest box ready and replacement site chosen. The size of the box depends on the bird: House Sparrow boxes should be at least 6 inches square with a 2 inch hole for each nest. Staling boxes can be bigger, up to 12 inches maximum, with a 2.5 inch entrance hole.