I am cutting some walnut lumber. Using the advice I got here, and a new
Timberwolf 3tpi blade, things have been going reasonably well. The first 40
cuts (4' long, averaging 5" thick) were perfectly straight, but the last few
have developed a significant drift angle; the ends have become too thin to
be used and the wood is getting curved. I readjusted everything, but it
doesn't help. All I can think is that the blade is getting dull, but I
would expect a blade to last much longer than this.
Frankly though, I am a complete beginner with a band saw (14" Delta 1hp) and
really don't know. It was actually getting easier as I picked up a little
skill in feeding the wood, but I can't continue like this.
Could the blade be getting dull after 160' of 5" thick fresh walnut, or is
there another possibility I am over looking. Thanks.
Toller - I'm no bandsaw guy (gave mine to my son since I never used it), so
my thinking on this is really quite baseless, but I might ask if you are
working your way up the tree and getting into pieces that have a more
knarley grain? Is it possible that the wood itself is contributing to your
I would think you may have a few contributing factors. Blade tension
may be to low. As the blade is being used it will stretch, you may need
to adjust. Double check you guides, upper and lower. Some drift is
normal, and if using a fence, adjust the fence for the drift.
Changing grain in the material will also contribute to drift.
Have you cleaned the rubber on the wheels? This problem shows itself by
the blade not tracking true. Working green wood would leave residue on
the blade and be deposited on the wheels.
Do you have another blade? Try it. Could you have cut through a nail
that might have contributed to premature failure? I've not done much
re-sawing, but this has happened to me. This was not noticed when
cutting on the bandsaw, but did show itself on my jointer with chipped
I think your wander may be running into dullness of the blade - 160' is
a fair amount for a carbon steel edge. I touch up my bands with a dremel
and chainsaw stone - just a quick touch on the underside of each
The way I clean off the sappy compacted sawdust residue from green wood
cutting is to run the saw and carefully, using a scrap piece of dry wood
in a sharp wedge shape, scrape the sides of the blade. If it's really
bad, I'll occasionally stop the saw and rotating the top wheel backwards
by hand will use the same scraping action. Call me foolhardy, but I even
use the scraper wedge on the tires as it's running - just make sure you
have a good grip so it's not pulled out of your hand and between the
blade and tire.
Having roller guides on my saw really packs the wet saw dust on the
blade - I have a metal scraper that I keep magnet-ed to the saw and very
carefully and gingerly (though I prefer Mary Ann) scrape the blade body
but keep back of the gullets. This is more risky of dulling the teeth
real quick if you slip onto the tooth area...
No. Not the WalMart stores here, anyway (Indianapolis).
Your best bet is a grocery store, on the same aisle as laundry detergent. If
you find the borax, the washing soda is probably close by. Arm & Hammer brand.
Big yellow box -- looks like their baking soda box, only bigger. Here in Indy,
Kroger and Safeway grocery stores have it, and I believe Ace Hardware, too.
If you can't find any, email me for my PayPal address, and I'll send you a box
at cost (approx. $2.50 plus shipping).
Doug Miller (alphageek at milmac dot com)
Hah! there are *worse* mistakes you can make.
Like making gravy, deciding it needs a little thickening, reaching in the
cupboard for the _yellow_ box of Argo Corn Starch, and getting the A&H box
All things considered, it was amazing that that particular disaster had never
happened before. those boxes had lived side-b-side for *years*. However,
from that day on, I took the raven's advice. "Nevermore". :)
I pay $12 to $16 a blade and use them up to a month.. (I cut tons of pen and
I've never cleaned one as it would not be worth my time or money..
never had anything that looked like corrosion.. not sure what kind of wood would
I spend about $10 a month on blades, which I can live with..
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