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26/12/2015 9:42 am
Is there a way to figure out the r value insulation rating for something? I have the formula from https://en.wikipedia.org/wiki/R-value_(insulation) but I have no clue how to use it.
I am trying to figure out what the value would be on a project that I am working on. It is more or less a crocheted sleeping bag. http://thewhoot.com.au/whoot-news/crafty-corner/crochet-mermaid-blanket I want to make sure that I do not make it too warm for a child.
