How to Scratch a Kaleidoscope Lens

Video Transcript

Ben Gonyo here with Expert Village, we're going over making a kaleidoscope. What we're going to do now is scratch the surface of the lens here with sand paper. If you look this right now, you can see all the way through so you get a design pattern and what is in the real world. What we are going to do is scratch the surface so you just get the light through and you can't tell what's on the other side and you just get a pattern. What you do for this is get a piece of sandpaper and scratch the transparency, that's a great thing about using the transparency is that if you want to do a couple different ones or if you scratch it too much on accident you just cut another transparency out. Just replace it and put it on, and your good to go. If you have glass or petri dish you might not have extra ones. So, give this a couple of scratches, and what you want to do it just try it out and see how much. You want to use a fine sand paper, like a 100, rather than a course one.

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