Quote:
Originally Posted by Jim Zondag
If you are looking for a clear plastic film, one of the best materials to use is PET Polyester. This is the stuff that they make pop bottles out of. It has very good tensile strength and puncture resistence, it is crystal clear, and best of all, it is dirt cheap (Several times cheaper than Polycabonate), plus you can buy it in big rolls instead of sheets so you have less waste. Available at Mcmaster-carr or any plastic supplier. We have used it as thin as 0.010" on several robots.
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This is something I can vouch for also. I reciently did some thermoformed parts for work out of PET and at $40 for a 4x8 sheet of 1/8in the cost difference from polycarbonate is worth it. The main difference as I understand it is that PET can be effected by UV light so it is not for outside applications, but for robotics I can't see this being an issue.