Introduction: Ribbon Cutting Scissors
For all your ceremonial needs these giant scissors will be there!
Made with old scissor blades and a 3D printer these are a quick and cheap project.
Step 1: Disassemble/Destroy Scissors
Find some scissors which are cheap or you don't need anymore. Unscrew or pry apart the plastic parts to reveal and expose the metal blade.
Step 2: Modeling the Scissors
This step is fairly straightforward, decide how big you want your scissors and start there. I used Fusion 360 but this could be pretty easily done in TinkerCAD or other programs.
I'll walk you through the basic steps!
Step 3: Get Your Basic Shape & Size
It's useful to import reference photos to aid you in getting the basic shape.
I wanted my scissors to be about 11" long, so I started there.
Then just create a sketch (Fusion 360) or start dropping down shapes (TinkerCAD).
Step 4: Add the Slot for the Blade
Measure the size of the scissor blades that you have salvaged. Add a slot about halfway down where you want the blades to fit; this slot doesn't have to be the perfect size/shape as you can account for any error when glueing it into place later.
Step 5: Finishing Touches
Duplicate the one half of the scissors and rotate it 180 degrees. Then align the two halves together intersecting in the spot which they will pivot. Add something to pivot on, this can either be done like I have done with a locking mechanism or you could design threads to attach a screw later.
Next add some bevels to make the scissors look and feel nicer. You can also add a chamfer to imitate the look of a blade all the way down.
Attached are the completed .stl files in case you would like to print these.
Step 6: Print Your Design
I printed in white PLA because I plan on painting them later, alternatively, you could print them in your desired color.
I printed my design using Cura as my slicer on very basic settings and got great results!
My Settings: .2mm layer height, 50mm/s, 200 C, 30% infill
Step 7: Glue in Blades
This Part takes some fine tuning, you will need to dry fit the blades into their slots to ensure that they will rub against each other. After it looks like it'll work go ahead and glue. I would recommend that you don't use super glue or an epoxy because if you need to re-adjust the blade later it will be very difficult. Once the glue dries they should be functional scissors!
Step 8: Paint Your Scissors
This step is optional I guess, but to me it's worth it to go the extra distance and give them a nice paint job. Pick what colors you want (red, silver, gold, etc.) and determine your painting method (spray or hand painting).
Tape off your blades if you plan on doing a double colored pair of scissors.
Start sanding, priming, and painting your scissors.
I finish most of my projects with a water based spray polyurethane to give it one last protective coat to ensure that the paint doesn't chip/rub off.
Step 9: Test Them Out!
Now that your Scissors are done you are prepared for your next ribbon cutting ceremony!
Participated in the
Super-Size Speed Challenge