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Author Topic: New LT15 blade rising during cut?  (Read 2135 times)

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Offline Jeff

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Re: New LT15 blade rising during cut?
« Reply #20 on: August 29, 2018, 10:30:32 PM »
But it would not be rare for a new owner to dull a new blade putting it on and not even know it.
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Offline gmmills

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Re: New LT15 blade rising during cut?
« Reply #21 on: August 29, 2018, 11:41:38 PM »


Brand new blade that came with the brand new mill. I think Vortex or something. My friend mentioned its the general blade that the dealer gave him when he bought it.

  
   That info is quite relevant. If the blade is a Vortex it has a 10 deg hook angle. If he was given what WM classifies as a general purpose blade it is also a 10 deg blade. The issues he is having are more than likely not an issue with the mill itself, but directly related to the wrong blade for the species of wood being cut. A  10 deg blade is too aggressive to cut Ash in a low HP situation. Tell him to purchase some 4 deg blades. bet his cut quality issues will more than likely be resolved.

  Stephen1, The info you were given in regards to using 4 deg blades with your Onan is way off. With the dead dry ash you are cutting it will perform better than the 9 deg blades.  I am of the opinion that any mill with low hp engine should be using a 4 deg blade as a general purpose blade. Get yourself some 4 deg blades to try.  
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Offline MartyParsons

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Re: New LT15 blade rising during cut?
« Reply #22 on: August 30, 2018, 05:37:39 AM »
Hello!
The blade that comes with a new mill would be 10 degree .045 1 1/4"
Ash saws different.

Got a call few years back.   Wife doing a demo with a Super.
 It will not cut.
My response.
What kind of wood? Ash
  Are you using water on the blade?   No
Are you sawing slow?   Yes
Is there sawdust between the cuts? Does it look like pancake flour on the cant when you remove the board you just cut?   Yes.

Increase blade lube.
Increase feed rate way more than you are comfortable with!

10 min later.
Text  It worked!

Hope this helps!
Marty
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Offline esteadle

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Re: New LT15 blade rising during cut?
« Reply #23 on: August 30, 2018, 06:55:40 PM »
So.... I think your friend got a 'dull' band for free from the dealer. 

I'd like to suggest something... take a magnifying glass, and get outside in broad daylight and take a good look at the edges of the teeth of the blade. Start at the weld, and go around and look at the teeth and see if they reflect any light back at you when you look at the edge. 

A sharp tooth will have a nice clean edge and won't reflect any light back at you. So it will appear dark. A dull blade will have been rounded over at the edges and will reflect light back to your eye, almost no matter what angle you look at it. Move your head from side to side and up and down as you look at the tips and see if you can tell if they are rounded over and dull. 


I looked at WMs site to see how the Vortex blade is positioned in the marketplace. Here's what it says: 

Wood-Mizer's Vortex™ dust removal blade will clear the dust from your cut like no other blade on the market. This extremely unique profile has generated extraordinary results in high production pallet factory tests. Patent pending and trademarked for its revolutionary design and results, this blade's ability to leave only a trace amount of sawdust will leave you spinning and forever change your expectations of what is an acceptable amount of sawdust from a dust removal blade.


Did the Ash log your friend was sawing have sawdust left on the boards? It should not have. If it did... well... maybe it wasn't a Vortex blade. Or, maybe it wasn't set properly ('set' on a blade has a large influence on how much sawdust is left on the boards). 

Another question I would ask you and your friend is how dirty was the log? Was there mud on the bark? Or dirt, or stones? Those will dull a blade in a matter of minutes as the mud grinds between the edge of the teeth and the wood it's trying to cut. 

One comment about Ash. I see from your profile that you're in PA, on the opposite side of the state from me. The Ash we get in PA is white ash, which is not much harder than cherry, and does not contain much mineral content. So it should not dull the blades you have that quickly (unless the logs are dirty). You should be able to saw a couple hundred board feet of ash without having to change your blades. A 5' long 23" diameter log is maybe 50-60 board feet. you should be able to saw 10 of those before your blade dulls. So something else seems to be the issue here. 

As everyone else has also suggested, I'd try a brand new blade, right out of the box and see what happens. 

Best of luck! 

Timber Harvester 30HT26 (setworks, hydraulic) Stihl 880 (36" bar).

Offline Brad_bb

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Re: New LT15 blade rising during cut?
« Reply #24 on: August 30, 2018, 09:45:40 PM »
I assumed the band was a 4° band.  The OP has not specified what degree band it is.  My LT15 with 19hp gas Kohler engine will only cut hardwood with 4° bands.  I've tried 7° and 9° and always had wavy issues.  Some on here told me my mill doesn't have the HP for the higher degree bands.  I called woodmizer and the salesman confirmed that.  He told me I should only be running 4° on my mill with hardwood -Ash, Cherry, Walnut, Oak, Osage.
Anything someone can design, I can sure figure out how to fix!
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Offline JB Griffin

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Re: New LT15 blade rising during cut?
« Reply #25 on: September 01, 2018, 01:50:24 AM »
4deg blades is what you need, forget what salesman tell you. Most don't know what you really need, but there are exceptions. (Not pickin on any brand or company, they ALL do this)

Do you ask the car salesman what tires to put on the car you just bought?
Or the insurance salesman how much insurance you need on that car?
2000 LT40hyd remote 33hp Kubota, 160 Prentice, Frick 2 saw gang edger, Wright W-37 ABG, Suffolk dual tooth setter, Cat claw single tooth setter,'96 F-250 7.3 PSD 4x4, CS-590 Echo, MF 20c, M681 Memo.

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Re: New LT15 blade rising during cut?
« Reply #26 on: September 10, 2018, 05:16:08 PM »
Thank you everyone for the replies. I will pass on that he might be moving too fast through the cut, add more lube/water, and check to see if the blade is dull. I am out of the office for two weeks so I will get back to you all week after next.  
There are no problems; only solutions we haven't found yet.


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