I've never understood it when people say it takes a day or two to fix their base. I'm usually done by 8am. The longest it ever took was until noon or so and that was a fancy base that had stuff for looks and not purely functional. R concrete and steel just don't break that often. All you do is run around with the nailgun clicking, and very few block replacements for me, but I'm killing a lot. Most of the damage is self inflicted from my grenades I drop that damage a lot of blocks a tiny amount.