Re: band saw tension
Response To:
band saw tension ()

TM Stock
A 3/4" blade will likely be at least 0.032" thick, and the usual recommendation is 15,000 minimum and closer to 25,000 PSI for adequate resaw tensioning, That's 400 lbs of tension on a 1/2" wide band (3/4" - 1/4" depth gullets), which is why lightly built 14" cast iron saws will be running with their tension springs bottomed out and a lot of frame distortion. You'll get better results with a 1/2" wide blade, an aftermarket tension spring, and careful set-up each time before resaw.

If you want to do resaw work on a routine basis, consider going to a welded sheet metal framed saw large enough to tension a 1" wide blade and with wheels of large enough diameter that fatigue of the band is a secondary consideration in blade life. If footprint seems like a big issue, keep in mind that a 17" class bandsaw takes up just over 7 square feet (32" x 32" foot print), while the classic Rockwell 14" saw takes up just under 5 sf (26" x 27") in motor-under configuration...very little real difference for a 17" at 6" deeper and 5" wider. Even the 19" saws don't add much to the footprint, with 8 sf (36" x 32").

Disclaimer: I love huge old cast iron saws and the material is awesome if you can move a 1500 lb saw into and out of your shop. Nothing damps vibes like cast iron, but a 14" saw has so little of it that the vibe reduction is not noticeable versus a 14" welded frame saw.

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