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What TPI do you use for bandsaw boxes?

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Forum topic by Steven H posted 09-05-2010 04:36 AM 1016 views 0 times favorited 4 replies Add to Favorites Watch
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Steven H

1117 posts in 2526 days


09-05-2010 04:36 AM

Im cutting very tight curves on a 3” pine wood.
Its is very difficult to cut with a 3/16 blade. The blade is struggling.
It is an brand new Olson All Pro bandsaw blade.

Is it because the wood I’m using?


4 replies so far

View Gregn's profile

Gregn

1642 posts in 2449 days


#1 posted 09-05-2010 06:32 AM

What do you mean the blade is struggling? Is the blade drifting or is it bogging down? Have you tried changing blade speeds on your band saw? Is the tension tight enough for the blade? I suspect you might be feeding the stock to fast and that your not allowing the blade to work on its own so its binding on you.

-- I don't make mistakes, I have great learning lessons, Greg

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tooldad

660 posts in 3181 days


#2 posted 09-05-2010 06:41 AM

The amount of teeth affect the speed and quality of the cut. If you go with a 4tpi then you will get a faster cut. That is what we use in the school shop. It makes the kids sand a little more, but is more forgiving on the impatience of a teenager. More tpi will give you a smoother, but slower cut.

View Steven H's profile

Steven H

1117 posts in 2526 days


#3 posted 09-05-2010 07:59 AM

Greg

You are correct, I am feeding it too fast.
And it is fluttering a bit.

View richgreer's profile

richgreer

4541 posts in 2540 days


#4 posted 09-05-2010 03:43 PM

Many people do not have their blades tight enough. If you are using the markings on the side of your bandsaw to set the tension it is quite likely the blade is not tight enough.

The ideal tension for most blades is 20,000 lb/sq in. On my 18 inch Jet with a 1/4 inch blade, I need to set the tension, per the markings on the side of the saw, as if I was using a 5/8 inch blade. Of course, every saw is different.

You can buy (or many borrow) a tension gauge to test your saw. Many woodworking clubs have tension gauges the members can borrow because once you know the right settings, you really don’t need the gauge for a while. You may want to retest after a year or more because the springs will get weaker with age.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

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