1) Accurate polling is a very difficult and expensive proposition. The primary issue is ensuring that the sample is representative, as many have said...
Personally, I release most, but not all the tension. Two reasons. The wood could be bent permanently if under constant tension. Also, how do you know...
I have a Home Center Ridgid Table Saw with a 3HP 1PH motor I wired for 230V. It spins up quick and will muscle through about anything I throw at it....
Jim, the 10.8v C12 has been a delightful drill/driver for many years. Lighter than anything else I had. Its lower power was only evident when I used...