Bartovation Diffraction Grating Sheet 13,500 Lines/in [One 6" x 5ft Roll]

Works on perler beads. I used this on mini melty beads instead of using parchment paper for the melt. Key is to leave on the diffraction sheet till the perler is cool. I added a photo of what it looks like when its hitting the light vs no light.

This is a single sheet of thin plastic, with the surface on one side to diffuse light. If you temper chocolate correctly for phase 2 crystal structure (89f for milk chocolate), it will retain this diffraction matrix after it sets! Impress your friends with your crazy cocowizard powers! Make some inclusive and representative sweets for your sweet! One roll, 6" wide and 5' long. Some listings are for individual sheets, this is a tube with a roll. None of my tables are that long, though

We’ve used this over a camera lens, projector, and an lcd light cube for some stellar effects.

Love this for my suncatchers.

Seems to be the best I’ve seen. I wasted money on others and this one is the real deal. You can tell it was made with high precision equipment.