In this Project Farm video, Todd tests 15 different circular saw blades to find out which ones are the best.
He tested blades for performance ripping 2×4 lumber, before and after striking nails. Circular saw blades were also compared for performance cutting through oak and ripping an 8 foot pressure treated 4×4.
Bottom line? The Makita blade ($10) was best overall. The Spyder also performed surprisingly well for its $5 price tag, although that price is currently over $12 each, so look for it on sale. Doing a web search, I see it is available at some e-tailers for under $7.
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