2 litre bottle filter insert
thingiverse
To enhance a standard 2-litre soda bottle for a science fair project, we crafted various filters with adjustable hole sizes for regulating water flow. I borrowed the hole pattern from Thingiverse, as I didn't want to create new holes myself. Unfortunately, I can't find the original design now and apologize for not mentioning the remix attribution. Have a fantastic day! Yours, Bill
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