clean, smooth cutting of steel with a reciprocating saw. Blade is stiff and remains reliably straight, impressive considering the thin kerf.
I tend to bang the end of short Sawzall blades into things while I am cutting, bending or breaking the blade long before I dull it. I really expected to burn through these fast because thin kerf blade, would be more fragile, but these are tough blades, longer lasting than others I have used.
With 24 TPI, they leave a nice cut. Here is how I tested them.
I am building a couple of spokeshaves from an article in Woodsmith, and needed to split a length of 5/8 steel rod lengthwise to create
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blade mounts. I started to do it with a hacksaw, but grew tired. So I chucked one of these up in my Sawzall, dosed it with bit of Tap-Magic (cutting oil) and made rapid work of an arm straining project. Once the rod was cut lengthwise, I ended up with two half moon shaped lengths. These 24TPI blades left a reasonably smooth cut that I was able to quickly clean up with a file.
Next, I had some kids use one of these blades and the Sawall to cut up a bunch of lengths of EMT (Electrical conduit pipe) into carefully measured lengths to create tuned (do re me fa so la ti do) idiophones for small glockenspiels. (Idiophones are the tuned lengths of wood or metal you see in xylophones, marimbas, and vibraphones...the part you hit with a mallet to make sounds).
These blades cut the tubing fairly rapidly, but the high tooth pitch made it easy for the kids to keep the blade under control and accurately follow the cutting line.
Seeds Program Review