31st-Aug-23, 12:36 AM
RC aircraft guys have been using the thin sides of the 2L pop bottle to make clear aircraft canopies for years. It's easier to cut than the thick bottom. First carve/sand a shape from a wooden dowel/stick/block. Then use a heat gun to gently melt the plastic to any contour you like.
Be careful. Too much heat turns the plastic to goo very quickly.
Be careful. Too much heat turns the plastic to goo very quickly.

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