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Thinking of sharpening my own band saw blades

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Forum topic by ohtimberwolf posted 01-31-2014 12:44 AM 1176 views 1 time favorited 11 replies Add to Favorites Watch
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ohtimberwolf

608 posts in 1682 days


01-31-2014 12:44 AM

Topic tags/keywords: sharpen band saw blade

and I came across this video on u tube and was quite impressed. Just wondered what you experts think of this and maybe how you do yours. I know many prefer to just buy new and that is what I was thinking, and that is ok, but after seeing this I am re-thinking my opinion…

http://www.youtube.com/watch?v=UygEQ-079Ws

-- Just a barn cat, now gone to cat heaven.


11 replies so far

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Loren

8095 posts in 2978 days


#1 posted 01-31-2014 01:48 AM

You can do it. I’ve done it by flipping them upside down on the saw
and grinding the gullets with a dremel tool.

If you really want to stretch your blade budget, buy coil stock
and solder up your own. I do it.

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distrbd

2115 posts in 1776 days


#2 posted 01-31-2014 02:13 AM

I have done it with a Dremel and a cutting /grinding disc but not the gullets just the the tips of the teeth like the youtube video except I removed the blade and sharpened it on the bench ,it’s easier.

http://www.youtube.com/watch?v=-AnDvUqe1Ac

-- Ken from Ontario, Canada

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ohtimberwolf

608 posts in 1682 days


#3 posted 01-31-2014 12:59 PM

Loren, Yeah, but you are a master and my feet are just getting wet. Maybe wetter… but I think you have to silver solder those and I don’t have that sort of equipment or knowledge. Thanks for the tip, that sounds like a heck of a good idea. Might even be able to run the saw with the blade and hold a file or fine stone at a safe angle in place on the table and let the saw do the work. Could even make a more even grind that way.

Ken, that would be easier, every response helps.

Larry

-- Just a barn cat, now gone to cat heaven.

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wingate_52

221 posts in 1900 days


#4 posted 01-31-2014 02:00 PM

I used to sharpen and reset the teeth on my school bandsaw blade. We got a few hours more use out of them.

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bigblockyeti

3303 posts in 1051 days


#5 posted 01-31-2014 03:02 PM

I’ve thought about this with my resaw blades as they’re expensive and at only 1.3TPI not too many teeth to sharpen and plenty of room between tips to reduce the chance of accidentally hitting one you just sharpened on the side of the wheel. I would think that free handing it wouldn’t give you more than a couple sharpening’s before the depth of the blade started to get a little off. I would think it would work a little better if you sharpened into the set of half the teeth, then flipped the blade and sharpened into the set of the other half.

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DrDirt

4035 posts in 3072 days


#6 posted 01-31-2014 03:06 PM

I buy my bandsaw blades for 9 dollars from BC Saw.
Our guild bought in bulk, so we got a volume discount.

I couldn’t bring myself to sit and sharpen a 105 inch blade, when I could load a new one for less than 10 bucks.

BC Saw also does resharpening.
Michael Fortune gets blades resharpened, but notes that the sharpened blade has less tooth set – so it cuts a narrower kerf, but doesn’t turn as well.
His 2X resharpened blades are ideal for cutting tennons.

I have not tried getting my own blades resharpened – but the Michaels resharpened ones (I got to try) make smooth straight cuts that need very little cleaning up with a plane.

http://www.bcsaw.com/wp-content/uploads/2010/08/BandsawCatalogue.pdf

-- I don't trust trees. They're kinda shady

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bondogaposis

3818 posts in 1681 days


#7 posted 01-31-2014 04:04 PM

I’m going to try this, I’ve got a dull wood slicer in the trash can right now. At $30 a pop I’ve got nothing to lose.

-- Bondo Gaposis

View hydro's profile

hydro

208 posts in 1082 days


#8 posted 02-01-2014 12:14 AM

Sharpening bandsaw blades is easy, but a little time consuming. I use a bench grinder with a modified 1/4” thick surface grinding wheel, shaped to the profile of the tooth gullet. Just grind a little off of each tooth until the point comes back. Don’t worry too much about getting the profile perfect as you probably will not be able to tell the difference between the cut of your sharpened blade vs. a new blade. You can do this one or two times per blade depending on how careful you are at keeping the gullets even. The blade will likely fatigue and break before you wear it down sharpening. I used to try re-setting the teeth but that proved to be a waste of time.

If you are interested in making up or repairing blades by silver soldering check my blog here: http://lumberjocks.com/hydro/blog/38722

-- Minnesota Woodworkers Guild, Past President, Lifetime member.

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ohtimberwolf

608 posts in 1682 days


#9 posted 02-01-2014 12:53 AM

Nice post Hydro and very informative. Might try it when I get some time. Right now in the middle of a bathroom redo.

-- Just a barn cat, now gone to cat heaven.

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hydro

208 posts in 1082 days


#10 posted 02-01-2014 02:32 PM

Oh Boy Timberwolf, I am in the bathroom remodel process as well. They are small but sure take a lot of time, effort and money!

-- Minnesota Woodworkers Guild, Past President, Lifetime member.

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ohtimberwolf

608 posts in 1682 days


#11 posted 02-01-2014 08:48 PM

Dittos! I don’t mind most of it except I hate the bathtub/shower install work. Never did like plumbing or setting bath stuff. Need to get it done so I can start sanding the hardwood floors. Yeah…

-- Just a barn cat, now gone to cat heaven.

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