Metal cutting on bandsaw. Mods and data

dusty · Post by **dusty** » Wed Apr 18, 2012 7:20 am

paulmcohen wrote:The link does not seem to work.

It works for me.

peterm · Post by **peterm** » Thu Apr 19, 2012 6:37 am

Here is a similar one from frets.com:
[ATTACH]17171[/ATTACH]

twoblocked · Post by **twoblocked** » Thu Apr 19, 2012 8:52 am

I am currently working on a solution for reducing the output speed, but primarily for horizontal boring. I really don't like the idea of using the SS speed reducer and pushing it back and forth on the way bars. What I am trying instead is using a small 1/3 HP motor belted to the jointer shaft. So far, so good. It will also run the bandsaw at a reduced speed. Right now I am at about 450 rpm with a 1-1/2 inch motor pulley and a 3-1/2 inch shaft pulley. With a 7 inch shaft pulley, this would be about 250 rpm.

I will probably start a new Thread when I get more details worked up. I do like the idea presented here for just the bandsaw, though.

peterm · Post by **peterm** » Thu Apr 19, 2012 3:08 pm

twoblocked, did you see my post that discussed this approach?
http://www.shopsmith.net/forums/showthread.htm?t=6453

[ATTACH]17185[/ATTACH]

twoblocked · Post by **twoblocked** » Fri Apr 20, 2012 7:06 am

No I didn't. I will read it now.

twoblocked · Post by **twoblocked** » Fri Apr 20, 2012 7:34 am

Peter:

Not to highjack this thread, but just one quick question. With the 8 inch pulley, will the coupling still have clearance on the upper aux shaft? When I measured, it seemed awfully close. I don't want to spend $25 for something that won't work for the bandsaw.

holsgo · Post by **holsgo** » Fri Apr 20, 2012 9:10 pm

If he's done it. It works.
Trust me.

peterm · Post by **peterm** » Sat Apr 21, 2012 11:20 am

Thanks for the comment holsgo, but I have not done it, ie, used my setup to slow down the band saw, I was only using the lathe mode. I just set it up to check clearances:
My belt/pulley just clears the coupling
[ATTACH]17220[/ATTACH]
[ATTACH]17221[/ATTACH]
But, the coupling is an inch too short if your version has same dimensions as mine:
[ATTACH]17222[/ATTACH]
This could be handled by using something like a 1/2" router bit chuck, a short 5/8" shaft with a 1/2" section, and move the 5/8" drive hub left. OR, mount the motor so the motor support is not between the haedstock and the band saw!:D
My dc motor clears the body of the band saw ok.

BTW, twoblocked, please remind me what the $25 was for.

holsgo · Post by **holsgo** » Sun Apr 22, 2012 6:39 am

I was referring to your inventiveness, which I have copied a thing or two off of.
BTW. Making a cross slide for a South Bend milling attachment. Cutting 3/8 and 1/2 carbon steel on the bandsaw. Works fine. Have to have patience as you feed in at a steady rate but the speed is about right. Now, heat is an issue and coolant would be mandatory for much thicker pieces.

holsgo · Post by **holsgo** » Fri Jul 01, 2016 7:59 pm

Here is an update. Looks like my original file with the FPM data vanished.
Here is a photo of the chart.

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Metal cutting on bandsaw. Mods and data

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