Some fun facts about wood (yep, I just said that)!
After you purchase a new saw, such as the Dewalt Mitre Saw, don't just assume the blade it comes with is the best for your project. Yes it is new, however depending on your goals, you may need to switch blades before starting.
When selecting a mitre saw blade, the larger the tooth count, the smoother/finer the cut. For trim work, we prefer using an 80T blade.
Sanders also work in similar numbering systems. Use an 80grit to knock down the rough parts of a 2 x 4 and then come back through with a 150grit to achieve the smooth finish. If not your paint will tell on you. In this case, 2x's a charm.
For wood that you plan on staining instead of painting, you will want to use an even finer grit sand paper like a 220grit. When you sand, the orbital sander will leave swirls that will really pop out with stain, so the extra fine sander will help eliminate any evidence of these.
Don't let the nomenclature of lumber fool you. As we previously learned, all wood is 1/2" shy of whatever the name is...for example a 2 x 4 actually measures 1.5" x 3.5"
Make sure to prime ALL your exterior wood. Primer is not just to make your paint adhere better, but also plays a crucial role in waterproofing your investment. The last thing you'll want is to have wood rot on your beautiful new trim. Yep, that means priming even the backs of pieces you won't see. Trust me, you'll be thankful in the long run.