I make small free libraries and small boxes. I use them attached to the sides so they stay straight while the glue dries. I used to make these tools out of wood, but they weren't always perfect at 90 degrees like this. Being a durable plastic I think they will stay square longer than my wooden ones. They come in different sizes and I might need even bigger ones. I chose the Powertec brand because of the well known quality of other Powertec products I have.
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