Hey woodworkers! I'm in the process of building a wooden frame measuring 4'x2'x4" to support some rock wool (3" thick) for sound treatment panels. I'm working with 1x4's and planning to add support braces both 12" from the top and bottom. I'm planning to use glue and a brad nailer to put it all together. My main question is about the corners - should I use 90 degree cuts for strength or go for 45 degree cuts for a more polished look? I'm leaning towards 90s for better nailing, especially since everything will be covered with fabric. But since my compound miter saw can handle angled cuts, is there any real reason not to use 45s?
1 Answer
I recommend sticking with 90° cuts and using some dowels glued in for extra strength. While 45° cuts can look nice, they require a perfect precision to be strong. If they’re even slightly off, they could be weaker. It's better to be safe!

That makes a lot of sense! Do you think using nails and glue alone would hold up? I'm a bit worried about my hand-drilled dowel holes not being perfectly aligned.