I buy my fiberglass by the yard.
I really like the Japanese saw.
You should buy by the metre its 39 inch's not 36 !!
Japanese hand tools are beautiful things to use and once you learn how to use and what to use .is so much quicker than English tools we take for granted . The saw is really good but the secret is getting the longer handle that suits each person . the blades just snap in and out of the handles and can be changed in 2 seconds !!, they can be sharpened with the right files !. There skill saw blades I have never been able to find any where outside Japan even there skill saws had cast brass bases and 100% accurate every time and small narrow cuts so fine you don't have to sand paper . not pressed steel bases like you buy in the shops . Same with impact drills was all we ever used all the time used to drive screws 120mm long straight through wood if you weren't careful . hardly never used nails because of the earth quake thing !! screws hold better than nails !!