BMS250 questions

Breezybrzez · August 20, 2021, 02:38:54 PM

Hi all, was looking for some input from the guys that have a woodmizer bms250 sharpener. I've been debating ordering and was wondering if anyone has used other company's blades in the woodmizer sharpener with cbn wheels? I've read that you can damage the wheels of profiles don't match up? Thanks For any help!

scsmith42 · August 21, 2021, 04:38:16 PM

I use a BMS250 to sharpen Kasco bands. It works great! I sourced the CBN wheel from RR member CuttingEdge.

terrifictimbersllc · August 21, 2021, 06:37:37 PM

I resharpen kasco 7/40 with the Woodmizer 7/39.5 turbo wheel. Very little change. Also have taken these to 4/40 with cutting edge wheel. But most of my sharpening is Woodmizer 7/39.5 turbo.

Breezybrzez · August 21, 2021, 06:41:17 PM

I appreciate the help!

boonesyard · August 23, 2021, 12:04:44 PM

FYI, if you're thinking about ordering a BMS250, I'd do it asap. I ordered the BMS250 and BMT250 (setter) in May with possible delivery in November. Good thing is I'll have plenty of blades to practice on by then

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terrifictimbersllc · August 23, 2021, 08:25:09 PM

The BMS 250 as a well-designed machine. I don't find myself thinking of ways to improve it, or using it while overlooking some faults, or wishing I had spent more money on a better machine. Pretty sure one day when I go to sell it I'll get most of my money back from it.

YellowHammer · August 23, 2021, 08:45:28 PM

Just take light cuts, the point contact stress will wear those initial spots more quickly on the wheel, but the CBN will still do hundreds and hundreds of bands, as long as the lubrication is on when the wheel contacts the band.

I've turned quite a few Kascos into Woodmizer profiles, I don't worry about it.

fluidpowerpro · August 23, 2021, 09:00:09 PM

Im also considering buying a sharpener. Does anyone have any experience with the one offered by Woodland Mills? When I look at theirs, it looks comparable to the BMS250, except something is different with how they set the angle. The BMS makes reference to the cam, and the Woodland Mills has an adjustment for it.

Southside · August 23, 2021, 09:14:23 PM

Unless they have something new the Woodland machine is a drag style with a dry stone that sharpens the band. The 250 uses a CBN wheel and an oil bath. Very different processes.

fluidpowerpro · August 23, 2021, 09:32:41 PM

I was comparing to the BMS, not CBN.

fluidpowerpro · August 23, 2021, 09:40:01 PM

I initially thought CBN was referring to a different model. Thats why my last reply was as it was... I just double checked and watched the video on the WM web site. I dont see an oil bath??

fluidpowerpro · August 23, 2021, 09:46:46 PM

My apologies, BMS25 vs BMS250. That extra zero makes a big difference...

Southside · August 23, 2021, 10:30:07 PM

An extra zero usually does. :D

fluidpowerpro · August 23, 2021, 11:03:59 PM

I would still be interested in your feedback on what I mentioned earlier. On the Woodland Mills unit, in their video, they talk about adjusting the angle on the sharpener. It looks to me that they are adjusting the angle of the cutting wheel. On the Wood Mizer BM25 (no zero) they make reference to the angle by using different cams. I could see how you could adjust for tooth profile with the cam, but how could the cam change the angle??

Breezybrzez · August 24, 2021, 11:04:20 AM

Fluidpowepro, right off what I've noticed watching videos on both during my shopping, I noticed the woodmizer bms25 seems a lot faster than the woodland mode.
YellowHammer, I'm glad to hear that light passes can adjust profiles of different manufacturers blades to the wm profile. I bought a box of cooks 10 degree blades and was a bit worried that I'd screw up my new cbn wheel. Today I ordered the sharpener. Woodmizer told me 90 days so hopefully that holds true! I decided going with a cooks single tooth setter as I heard they're among the most accurate and the amount of blades I'm expecting to have to run thru has me thinking it'll be productive enough for now. (hopefully not famous last words of a fool)

fluidpowerpro · August 24, 2021, 05:08:02 PM

Yes, I noticed the speed difference also. I was just commenting about how they set the angle and was hoping to learn more about the differences between the 2. Congrats on your purchase and hope they work well for you.

YellowHammer · August 24, 2021, 10:33:17 PM

The way to really wear out a wheel is to dry grind the first few teeth on the band while making the adjustments. Tweak it a little this way, tweak it a little that way, fluid off because you can't see nothing, and it will spray everywhere with the cover open. Next thing you know, you've dry ground a dozen teeth. Do that a few dozen times and before you know it, the wheel isn't as sharp as it used to be.......

Cedarman · August 25, 2021, 07:36:46 AM

What can be done with a CBN wheel once its life for sharpening blades is gone?
I try to get it adjusted in 2 or 3 teeth. Stop blade feed, turn on oil, then adjust blade speed.
First stone made well over a thousand sharpenings before I noticed blades were not getting a good edge on tooth.

boonesyard · August 25, 2021, 09:21:09 AM

Quote from: YellowHammer on August 24, 2021, 10:33:17 PM
The way to really wear out a wheel is to dry grind the first few teeth on the band while making the adjustments. Tweak it a little this way, tweak it a little that way, fluid off because you can't see nothing, and it will spray everywhere with the cover open. Next thing you know, you've dry ground a dozen teeth. Do that a few dozen times and before you know it, the wheel isn't as sharp as it used to be.......

Good info. How do you set yours so you can see what's going on with the oil.

Southside · August 25, 2021, 10:11:31 AM

I will run mine without the wheel turning for a few teeth and see where it lands, then paint a few teeth and run it with oil, usually it's dialed in then and let it go. If not make any fine adjustments with the oil running and on painted teeth.

YellowHammer · August 25, 2021, 01:18:17 PM

I sharpen groups of bands in batches of 30 or 40 and keep them all on the same cycle. So almost no band to band adjustment is necessary. Put in the first band, drop the non rotating wheel, and if it's set correctly, it will just barely scrape the tooth face, and land solidly on the gullet. Then spin up the wheel, do a slow advance, watch for a very few sparks off the face, watch the gullet grind, and in one or two teeth, its set. Then turn on the lube and finish that band. If I can't get it adjusted properly in one or two teeth, I'll turn on the lube and rewet the wheel.

Then put all the other bands in and they will not require further adjustment. Do the whole batch of bands. I generally watch the first few teeth come out to confirm they are doing fine.

That's a huge advantage of a CBN wheel grinder, there is no or almost no adjustment needed between bands all on the same sharpening cycle.

As a helpful tip, put a witness mark on both adjustment knobs, and it allows easy visual orientation of the knobs. After awhile, I can advance the witness marks and know where they are set correctly for the next cycle.