How to make a simple paper slide rule.
Step 1: Download and Print
You need to download the PDF image of the slide rule from www.extremenxt.com/sliderule.pdf or from link below. Print the page on paper as thick as your printer can handle.
Step 2: Everything Else You Need
You will also need:
Piece of thin clear plastic 1 by 5 inches
Step 3: Cut Out the Parts
Carefully cut along the solid lines to make the body and slide.
Step 4: The Body and Slide
Step 5: Fold the Body Parts
Fold back along dotted lines to form top and bottom scales.
Step 6: Insert the Slide
Insert the slide. You might need to slightly trim the slide or adjust the folds so that the slide is free to move back and forth.
Step 7: Draw the Cursor
Draw a fine line down the center of the clear plastic.
Step 8: Fold the Plastic
Fold the plastic up about 1 inch from the end. Fold towards the side with the line.
Step 9: Fold Plastic Around Body and Tape
Fold the plastic around the body and tape in back. It should be free enough to slide back and forth also.
Step 10: Finished
Your slide rule is ready to use. In the photo the C and D scales are set to multiply 25 times 2.