I'm building a simple corner cabinet for storing linens and other items, and I want to make sure the frames I attach to the floor and walls are perfectly square. I only have basic tools, including a T-square, and I'm looking for the best methods to achieve that accurate squareness. Any advice on techniques or tips would be super helpful!
2 Answers
Using a T-square is a good starting point, but I'd suggest researching traditional cabinet-making methods. Instead of building frames as floating pieces, consider assembling the cabinet as a more solid unit. Paul Sellers has great resources on cutting square pieces with hand tools. Also, get your stock prepped well — ensuring your wood is square and even makes a huge difference. Doing a mock glue-up before final assembly can also help you check for squareness while you clamp everything down.
To ensure your frames are square, measure the diagonals from corner to corner. If both measurements are the same, you’re good to go! It's a straightforward method that works well with basic tools. Good luck with your cabinet!
Thank you for the tip!

True! Having everything perfectly prepped is key to successful hand tool work.