It is a common question most contractors struggle with: When is it time to make that investment in a new piece of equipment? Sometimes, the answer is obvious: A piece of equipment breaks and repairing it would cost more than buying a newer model. But for many contractors, the decision needs to be carefully weighed.Dervin Witmer knows the dilemma well. He started Dig-It Excavating in Cassopolis, Michigan, in 2005 with a new pickup truck and a trailer. Today, his excavating services include installing and replacing septic systems, trenching services, foundations and general site prep.“I rented a mini-excavator in the beginning,
