Brad nailers and finish nailers look similar and do similar things. The difference comes down to nail size, which determines what projects each one handles well.
Brad Nailers
Brad nailers shoot 18-gauge nails – thin, with tiny heads. They’re for delicate work where you don’t want visible nail holes. Crown molding, small trim, cabinet backs, craft projects.
The advantage is minimal surface damage. You often don’t even need wood filler – the holes are that small. The disadvantage is limited holding power. Brad nails won’t hold heavy trim in place long-term.
I use my brad nailer constantly for anything that’s light or that I’ll be gluing anyway. It holds pieces in position while the glue dries.
Finish Nailers
Finish nailers shoot 15 or 16-gauge nails – thicker with more substantial heads. They’re for structural trim work. Baseboards, door and window casings, chair rails, anything that needs real holding power.
The holes are bigger and need filling. But the nail actually holds the material in place permanently. That’s the trade-off – more finishing work, more strength.
For baseboard installation, a finish nailer is the right tool. Brads would be too weak.
Choosing
If you’re buying one nailer for general trim work, get the finish nailer. It handles more situations even if you have to fill some holes.
If you do a lot of detail work, crafts, or cabinet building, the brad nailer is worth owning. For serious woodworking, you’ll want both eventually.
Pneumatic vs Cordless
Pneumatic nailers need an air compressor. They’re more powerful and consistent. Cordless models run on batteries – more convenient but batteries die and you’re working without a cord dragging around.
For occasional use, cordless is fine. Professionals often prefer pneumatic for reliability and consistent power all day long.
Safety Note
Both tools can hurt you. Wear eye protection. Keep fingers away from the tip. Never assume the safety is foolproof. I’ve seen people nail through their fingers being careless. Don’t be that person.