Could anyone give me any links to images/sites/existing products that show how a lid can pop/spring open about a pivot just using the plastic parts themselves and not a metal torsion spring?
Any help would be much appreciated.
Thanks.
Could anyone give me any links to images/sites/existing products that show how a lid can pop/spring open about a pivot just using the plastic parts themselves and not a metal torsion spring?
Any help would be much appreciated.
Thanks.
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