Doc Brown Sunglasses Brought to the Future

These sunglasses are a nod to Back to the Future 2 where Doc Brown comes back from the future to get Marty. The glasses from the movie look pretty cool but weren't functional. This take is a sleeker design and fully functional. You don't need many materials to make these cool sunglasses.

PET sheet at least 420mm wide (16") .25mm thick

8% Window tint film

3D printed bow

Strong double-sided tape

All STLs can be found here: https://jasonwinfield.nz/my-stls/

• Create an SVG from the provided STL (TEMPLATEFLAT.stl) this can be done with Meshmixer (check the video for details).
• Print and cut this template out on paper. Tape the template to your PET sheet, and cut the sheet with some sharp scissors.

• Place the film under the cutout PET sheet for size and trim your film.
• Spray the PET sheet with detergent and water.
• Peel the backing off the tint and spray this with soapy water also.
• Place the tint on the PET sheet and squeeze out the air bubble with your palm and plastic scrapper like an old credit card.

The glasses are held together by a PLA bow. Print the attached STL with 100% infill. If you do not have access to a 3D printer you could possibly make the bow out of something else like a wire coat hanger. The print takes about 45 min so you should be able to get it printed very cheaply.

• Apply tape to the outside edge of the bow.
• Trim off the excess.

Carefully roll the bow across the top edge of the PET sheet

You are all done. The glasses are fully functional.