A4 paper folding helper (customizible)

thingiverse

Sometimes you'll need to fold A4 in a half, which means printing four pages on one double-sided A4 sheet. This handy tool will come in super helpful at that moment. You'll require a small coin or washer to assemble it. First, place a test piece of paper into the device. If it doesn't fit quite right, use a paper knife to carefully trim the adjustment cube on one side. It's not necessary to get the angle between the sides exactly 90 degrees. You can still use this tool even if only one side is connected - either left or right. As for the top block, you can position it on either the left or right side of the device. Here are the steps: Step 1: Assemble the tool completely or partially. Step 2: Place a sheet of paper into the device. If needed, make some adjustments. Step 3: Position the top block. Slide your finger between the top block and the opposite adjustment cube to move it into place. Step 4: Hold the top block steady while sliding a coin or washer across the entire page at a 45-degree angle. Step 5: You should now see a clear folding mark. Step 6: Adjust the corners as you fold for a perfect crease. Repeat steps two through six for each additional sheet of paper.