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Re: Table for Vertical Cuts with HFT Bandsaw

 

PS. Sorry I forgot about your blade tension question.?
Proper blade tension IS very tight.? For a 10-14 Bimetal blade the blade manufacturers say 25,000 to 30,000psi stress.? In lb's of tension that's about 300lb in each run of the blade, so 600lb between the wheels.It definitely twangs but of course a much lower 'note' on the back run of the blade than between the guides. It's about half that for a carbon-steel blade.
I've tried quite sophisticated weight gauges and deflection measurement and there are too many errors involved.
Although there are better ways, the simplest is to tighten the knob as hard as a normal-strength person can do it.? Not a gorilla or a wimp, and without any aids, like a rag - jv

On Thu, Aug 13, 2020 at 11:35 AM john walker <jwalkergh@...> wrote:
Well, this is awkward.

I took some pictures attached.

In vertical mode, I cut thru a 3/8" x 1.25" piece of aluminum with no problem.
I then cut a thin 1/16" piece, also with no problem.

I know the saw is just waiting for me to send this off but what can I say?
It appears to work.

Just as an FYI, when I "pluck" the blade it definitely sounds like a tight guitar string.
I could put a weight gage on it and measure deflection vs distance but I don't know what I would be looking for. Seems like the "twang" test is what people use.

Anyway, if anyone sees anything out of whack, let me know.

Thanks

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