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spectre_man

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  • spectre_man commented on Willys36's instructable Custom Car Bubble Top1 year ago
    Custom Car Bubble Top

    I'm totally inexperienced with this but curious--and a few poeple who've commented here might be able to clarify, in addition to the original poster. If you have a positive and negative mold, why can't the plastic just be pressed into shape? And how does the blowing work--does it just seal around the edge and then "inflate" the canopy to the shape of a (negative) mold? It seems like the application of compressed air would cool the canopy, making any shape-forming difficult if the molds and pressure hadn't completed the job by themselves.

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