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Author Topic: Woodmizer BMS250 Tips and Tricks  (Read 602 times)

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Offline Unclefish

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Woodmizer BMS250 Tips and Tricks
« on: June 28, 2020, 05:57:56 PM »
Would be nice if some of our experienced users can share there knowledge with some of less experienced users that still like to saw and do some manual labor.
Post up all questions here. You might think its stupid but you might not be the only one in the boat. 

Offline Unclefish

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #1 on: June 28, 2020, 06:01:04 PM »
I will be first heres my extra parts pile.
Anyone know where they go.



 

Offline SawyerTed

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #2 on: June 28, 2020, 06:55:13 PM »
FWIW, I have the same parts pile.

I added a plastic shield/blade wiper on the blade exit.  It keeps the machine from spitting little drops of oil out the side. 

It is a plastic coffee can lid with a slot cut in it. Held in place with a magnet. 

 
Woodmizer LT35HD25, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher, Ram 3500 6.7 Cummins

Offline Unclefish

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #3 on: June 29, 2020, 07:17:41 AM »
If you light face grind the first time around will it eventually more face grind since where the blade pusher hits will be less so it should . So is it important to try get it perfect so it only goes 1 time around on touch up grind. Also how do you check that blade tip is perfectly flat. Use a magnifying glass cause my eyes aren't that good.
Thanks Unclefish 

Offline terrifictimbersllc

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #4 on: June 29, 2020, 07:35:28 AM »
Use red layout dye on every blade to make sure the whole profile is ground.

Also pay attention to the sound of a grind. If it sounds different something is different.
DJ Hoover, Terrific Timbers LLC,  Mystic CT Woodmizer Million Board Foot Club member. 2019 LT70 Super Wide 55 Yanmar,  LogRite fetching arch, WM BMS250 sharpener/BMT250 setter.  2001 F350 7.3L PSD 6 spd manual ZF 4x4 Crew Cab Long Bed

Offline SawyerTed

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #5 on: June 29, 2020, 07:55:32 AM »
The amount of face grind wonít change without adjusting the length of the pusher.  Face grind is determined by the length of the pusher relative to the opposite side of the the wheel. Now two light trips around will give a more complete grind if everything is adjusted right. 

Iíve not been sharpening long and havenít been too worried about flatness of the top of the tooth.  The wheel shape takes care of the top of the tooth. 

I do use a magnifier to look at the teeth and gullet.  
Woodmizer LT35HD25, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher, Ram 3500 6.7 Cummins

Offline Unclefish

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #6 on: June 30, 2020, 04:00:13 PM »
First sharpening 10į .045 looking with magnifying glasses grind looks a little rough. Top of tips I can feel a like a sharp bur  that ok. Here are some pics



 

 

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #7 on: June 30, 2020, 04:04:40 PM »
 

 

Offline YellowHammer

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #8 on: June 30, 2020, 05:19:25 PM »
Itís important to look at the very corners of the teeth.  That where the chiseling action and fiber separation takes place when sawing, just as with a wood chisel.  The edge must be sharp, but the corners should be very sharp and fully formed.

Here are two pictures of the same band, after successive passes.  Big difference.  



 

This is not a fully sharpened tooth.  Slightly rounded corners, and not fully formed.


However, the photo below shows a fully sharpened tooth, with very sharp chisel corners, and ready to saw.



 

This was done with a drag sharpener, and my CBN wheel (BMS250) makes the teeth look even better.  
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Offline Unclefish

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #9 on: July 01, 2020, 04:08:06 PM »
I let this 1 go around 3 times seems to me like it does cleaner nicer job.



 

Offline Southside

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #10 on: July 01, 2020, 06:14:17 PM »
Magnet fell off once and I let one go for about two hours. She was sharp, gullet was a bit shallow, but sure was sharp.. 
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Offline Stephen1

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #11 on: July 01, 2020, 06:18:31 PM »
Magnet fell off once and I let one go for about two hours. She was sharp, gullet was a bit shallow, but sure was sharp..
No micro cracks in that blade..lol
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Offline terrifictimbersllc

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #12 on: July 01, 2020, 06:42:24 PM »
That will just give face grind, when the blade isnít raised after each go round. 
DJ Hoover, Terrific Timbers LLC,  Mystic CT Woodmizer Million Board Foot Club member. 2019 LT70 Super Wide 55 Yanmar,  LogRite fetching arch, WM BMS250 sharpener/BMT250 setter.  2001 F350 7.3L PSD 6 spd manual ZF 4x4 Crew Cab Long Bed

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #13 on: July 01, 2020, 09:16:04 PM »
I had the same magnet issue, too, more than once, and the sharpener ran half a day. Oops. The teeth were stubs.  I swore it would never happen again, and sure enough, I did it again, about a week later. 

 
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Offline donbj

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #14 on: July 01, 2020, 10:35:22 PM »
Magnet fell off once and I let one go for about two hours. She was sharp, gullet was a bit shallow, but sure was sharp..
Started out a 1 1/2" blade, ended up 3/4" blade :D
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Offline Southside

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #15 on: July 01, 2020, 10:58:52 PM »
Pretty much.  Have to say it's a unique feeling when you shut off the sawmill, remove your hearing protection, and hear "shinnk, shinnk, shinnk" and wonder - "what on earth is that noi.... OH DANG".  I sure don't run gracefully, but I suspect I cleared more than a few hurdles worth of lumber stacks on my way over to the sharpener.   :o  Still have the band and a part of me wants to throw it on one day just to see what it  does.   ;D
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
Woodmaster 725 and 4000 planner and moulder
Enough cows to ensure there is no spare time.
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Offline terrifictimbersllc

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #16 on: July 02, 2020, 06:22:45 AM »
While I love the BMS250, I wish they had a tooth counter, like the setter,  instead of the magnet method, simply so I didnt have to count to 17 before putting the magnet on and doing something else for a few minutes.

Tips.....
Make sure the blade is positioned in the plastic guides correctly.  Especially going between the wheel and the post on the last one.  If blade outside the last support, rather than between post and wheel, the post holds the magnet which never makes it to the sensor.

Check the mounting and adjustment of the sensor so it is within 1/16" of the magnet and at the right height so it is centered on the magnet.

Watch out for blades that might have a kink or deformity in them, that can lead to a portion being too far away from the sensor. If you have a blade that stops prematurely, this is one that might be deformed, the sensor is a metal detector and a blade that gets too close will stop it.  Not as bad as the magnet missing the sensor though. 

When you put the magnet on, have the painted side away from blade.

Best not to put a blade and leave for more than about 5 minutes.

Dont forget to count to 17 and put the magnet on :)  
DJ Hoover, Terrific Timbers LLC,  Mystic CT Woodmizer Million Board Foot Club member. 2019 LT70 Super Wide 55 Yanmar,  LogRite fetching arch, WM BMS250 sharpener/BMT250 setter.  2001 F350 7.3L PSD 6 spd manual ZF 4x4 Crew Cab Long Bed

Offline Unclefish

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Re: Woodmizer BMS250 Tips and Tricks
« Reply #17 on: July 02, 2020, 11:32:24 AM »
FWIW, I have the same parts pile.

I added a plastic shield/blade wiper on the blade exit.  It keeps the machine from spitting little drops of oil out the side.

It is a plastic coffee can lid with a slot cut in it. Held in place with a magnet.  
(Image hidden from quote, click to view.)

thanks for that tip I see what ya mean spits out


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