Join Date: Jan 2011
Location: Montgomery Village, Maryland
I would stay away from 2x4s as much as possible. Instead, get 2x6s, 2x8s, 2x10s and rip them to the dimension you are working with. Dimensional (construction) lumber isn't known for being high quality to begin with and 2x4s are even worse in terms of knots, twisting, checkng, cupping and inferior quality.
You do know that spruce, pine and fir are fairly soft and though easy to work with, will not take a beating very well. If it is available and it fits your budget, southern yellow pine or hard maple are often used.
Another benefit of using dimensional lumber is that when you screw up and make mistakes, the investment you have in the wood isn't that great.
Keep in mind that regardless of what the mc is, dimensional lumber twists and turns more than a politician. Pick out the straightest lumber you can find, cut it to rough length and let it set in your shop for several weeks. Donít mill it until it is as dry as it can get in your shop. Otherwise the straight and square stock you prepared this weeknd will be a twisted mess next weekend.
If I have seen further it is by standing on the shoulders of giants.