I have a smaller Johnson bandsaw that came to me in pieces that has been working well for me for the past year or so. Lately, I am finding that the cut will drift to the outside as it nears the end of cut. At first I thought the cause might be the part lifting in the vise but that is not it. So I wonder if it is blade tension, not enough control in the downfeed or just a bad blade. I do find the hydraulic downfeed set up to be touchy so I try to set that at the very minimum. What do you folks think? Thanks for any help!
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Johnson Bandsaw Cut Drift?
- Thread starter Gazz
- Start date
- Replies 14
- Views 1,436
deltap
Cast Iron
- Joined
- Sep 3, 2004
- Location
- Wisconsin, USA
Can be caused by all of the above. Check tension. Set blade guides + .001" wider than blade. Check downfeed pressure. Check blade for wear on one side.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
Digger got dull?
So what would be YOUR constructive reply to actually HELP said OP with their problem ?
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
Hey I don't complain about your posts, I just laugh at them
What is soooo funny about my post #3 ???
Is pot legal in your location ?....
Technical Ted
Cast Iron
- Joined
- Dec 31, 2017
Yes, could be dull blade and things already mentioned. But it could also be the way the blade guides are adjusted, and the condition of the guide bearings. Bandsaw manuals typically have a section showing how to adjust the guides to keep the blade cutting both straight and square. So, if a new blade doesn't help, you might want to check your manual. You can usually find one on-line if you don't have one. Doesn't even need to be the exact manual for your saw, they all work pretty much the same way as long as the design is basically the same...
Ted
Ted
memphisjed
Titanium
- Joined
- Jan 21, 2019
- Location
- Memphis
Dull blade, chip brush not chip brushing, outfeed side lower than indeed (vice) side (if part is heavy), coolant not slippery enough. If it is just at the bottom the guides might still be ok adjusted- that shows up as a parabolic curve from about 1/2 blade width down. Blade tension, more is better- shows as a width of cut curve more.
Change blade before going after the harder troubleshooting.
Change blade before going after the harder troubleshooting.
Scruffy887
Titanium
- Joined
- Dec 17, 2012
- Location
- Se Ma USA
Like ^^ he said. CHANGE THE BLADE! The dull blade will continue through the stock drifting bit by bit. But at some point it will be so angled that the drift will magnify the farther it goes through the material.
My horz was cutting acme shafts 5 at a time, started cutting them +- a stupid amount. But cut bar stock OK. Changed blade and all was well.
Ray Behner
Diamond
- Joined
- Mar 27, 2009
- Location
- Brunswick Oh USA
For sure. I've got an Ellis 1800. It cuts dry or optional air blast that I didn't purchase. Blade life is very good, 'cept when I didn't clamp that darn round stock tight. My Peerless was wet and messy....and stinky!
