To create DIY left and right 3D glasses, you will need a pair of clear plastic lenses, a pair of glasses frames, and a laser printer. Here's a concise guide:

1. Obtain a pair of glasses frames that fit comfortably over your eyes.

2. Cut two clear plastic lenses to fit the frames using a pair of scissors or a craft knife.

3. Print a left and right image on a sheet of paper using a laser printer. Ensure the images are in 3D format.

4. Place the printed images behind the clear lenses, aligning the left image with the left lens and the right image with the right lens.

5. Secure the lenses to the frames using a small amount of clear tape or glue.

This method is effective because it uses the principle of stereoscopic vision, where each eye sees a slightly different image, creating the illusion of depth. According to a study by the Journal of Vision, the human brain processes these two images to perceive depth and create a 3D effect. The use of a laser printer ensures high-quality images that are clear and sharp, enhancing the 3D experience.