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I think different paraffin waxes should be one of the materials we test for properties. We could fill a piston with different mixtures of paraffin and see which ones expand the most at the temperatures we want. We could also do tests similar to the ones in the study I posted, with different springs to see which ones return the piston to its original position within an acceptable time and temperature range. -Sarah | I think different paraffin waxes should be one of the materials we test for properties. We could fill a piston with different mixtures of paraffin and see which ones expand the most at the temperatures we want. We could also do tests similar to the ones in the study I posted, with different springs to see which ones return the piston to its original position within an acceptable time and temperature range. -Sarah | ||