To square a canvas frame, you need to ensure that its diagonal measurements are equal. This method helps confirm that all corners are at true 90-degree angles, resulting in a perfectly rectangular frame.
Checking for Squareness
A fundamental way to check if a canvas frame is square is by using the diagonal measurement technique. This simple process involves measuring the distance between opposite corners of the frame.
The Diagonal Measurement Method
The principle is straightforward: a truly square or rectangular frame will have diagonals of the exact same length. If the measurements differ, even slightly, the frame is not square and will likely require adjustment.
Here's how to apply this method:
- Measure the first diagonal: Take a measuring tape and stretch it from one corner of the frame to the opposite corner. Note this measurement carefully.
- Measure the second diagonal: Now, measure the distance from the other corner to its opposite corner.
- Compare the measurements: The reference highlights this critical step: "You want it to measure. The same distance. You want to have the same measurement meaning. This corner to this corner needs to measure the same as this corner and this corner. See what I mean." If the two diagonal measurements are identical, your frame is square. If they are different, the frame is out of square.
By following this simple diagonal measurement check, you can accurately determine if your canvas frame is properly squared before stretching canvas or further work.
