In this video I show an easy way to make your own silicone waterproofing and use it to make fabric tarps. Check out my sponsor, MEL Science, and use the code "nighthawk" for 60% off: https://melscience.com/sBDy/

I thought to try making my own waterproofing with naptha after watching this excellent video about making deep pour silicone mold material: https://youtu.be/E_IOqxds130

In case there's any concern about the environmental effects of evaporated naptha, from the sources I could find it has a very short half life in the atmosphere and is not of significant concern: https://webwiser.nlm.nih.gov/substance?substanceId=356&identifier=Naphtha&identifierType=name&menuItemId=76&catId=115

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