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Author Topic: Newbie cant keep blades sharp  (Read 1247 times)

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Offline Old Greenhorn

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Re: Newbie cant keep blades sharp
« Reply #20 on: February 09, 2019, 09:37:24 AM »
I too am a relative newbie, and also experienced the joys of this phenomenon. I have NO experience with pine (yet) and little with hemlock. Mostly I have cut hardwoods. I have always been an advocate of cheap (free) test solutions to prove a theory, so when I had issues I tried using a broad ax on the side of the log where the blade enters. Just use your eye to site down the log and clean it off along that line. This worked but was clunky, so I grabbed my draw knife and used that, works pretty good, especially in logs that have loose bark, pretty quick, except on maple. Blade life went up pretty quick. Cheap and dirty. I didn't go any further than that because as us newbies know, therre are a lot of major things to learn and fix in our heads, so I moved onto other problems.
 You don't mention, and I am surprised nobody asked, usually the first question I see, but what rake angle are you using on your blades? 4 degree I would think is what you want.
 Good Luck.
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Offline 61ford

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Re: Newbie cant keep blades sharp
« Reply #21 on: February 09, 2019, 09:43:53 AM »
I'm not exactly sure what the angle is. I think its 4. Cooks only sells one set of blades for mine I went looking last night for the specs but couldn't find any 

Offline LeeB

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Re: Newbie cant keep blades sharp
« Reply #22 on: February 09, 2019, 09:47:25 AM »
What mill are you using? How much HP you have? How fast are you sawing? Sawing too slow can dull a blade quickly too. Have you checked the tension of the drive belt? A slipping belt will mimic a dull blade. 
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Online KenMac

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Re: Newbie cant keep blades sharp
« Reply #23 on: February 09, 2019, 12:17:07 PM »
I'm not exactly sure what the angle is. I think its 4. Cooks only sells one set of blades for mine I went looking last night for the specs but couldn't find any
I don't think Cook's sells a 4 degree blade. It's not in my catalog and they say 7 degrees works well for most any situation. I reserve the right to be wrong.

Offline 61ford

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Re: Newbie cant keep blades sharp
« Reply #24 on: February 09, 2019, 12:23:02 PM »
It could be I have no idea. I did look at the blade this morning looks like the problem is the tips of the teeth are getting bent. Some are bent up some are bent down 

Offline Brad_bb

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Re: Newbie cant keep blades sharp
« Reply #25 on: February 09, 2019, 12:34:19 PM »
Are you talking about the set in the teeth?  On woodmizer blades you get one tooth bent up and one straight and one bent down etc.  That is called set.  It creates a kerf wider than the blade.  If you didn't have that, the blade would not pass through the wood.  Same goes for any hand saw.  If you don't have proper set, that is if the teeth get bent back towards the middle, it won't cut right.  It's often hard to see changes in set as they can be subtle or only in one part of the band.  This can cause diving, and/or just not cut well.  Same goes if the tips of those teeth get dull, or some of them do and aren't cutting correctly. It can dive or just not cut well.  Remember if your band doesn't want to cut, don't force it.  That can just lead to a dive etc.
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Offline 61ford

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Re: Newbie cant keep blades sharp
« Reply #26 on: February 16, 2019, 12:35:32 PM »
I'll give you an update for whatever reason it seemed to be the cooks blades. I ordered some from timberwood and they actually sell you blades based on what your cutting. They do run less tension and so far does seem to be better

Offline PA_Walnut

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Re: Newbie cant keep blades sharp
« Reply #27 on: February 17, 2019, 08:19:53 AM »
I wonder if your set was off, from the manufacturer. I have discovered this to be the case with mine at times.
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Offline moodnacreek

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Re: Newbie cant keep blades sharp
« Reply #28 on: February 17, 2019, 08:31:20 AM »
And people ask, why are you still using a circle saw?

Offline OffGrid973

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Re: Newbie cant keep blades sharp
« Reply #29 on: February 17, 2019, 10:35:18 PM »
How many 12 logs are we taking before a brand new blade becomes dull?   If cut the first pass and then put a level on the log does it show a wavy pattern or level?  This can tell you if something on the saw is off before you worry about blades being the root cause.
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Offline PA_Walnut

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Re: Newbie cant keep blades sharp
« Reply #30 on: February 18, 2019, 06:57:52 AM »
And people ask, why are you still using a circle saw?


When we hit metal, and have to replace a blade, it's about $25.
I own my own small piece of the world on an 8 acre plot on the side of a mountain with walnut, hickory, ash and spruce.
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Offline mitchrm

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Re: Newbie cant keep blades sharp
« Reply #31 on: February 21, 2019, 07:53:00 PM »
Could the wood have sand grown into them? Is it possible the trees grew along an old farm field or beach where sand could blow into the bark and after the time the tree grew around the sand? Something i found interesting before i was even interested in milling logs was two islands in lake michigan. The islands are called North and south manitou island. They are part of the sleeping bear dune national forest. On the shores of these island I believe there are virgin forest cedar trees that have never been cut. Old growth i guess you would call them. I was going to explain why but a picture speaks a thousand word.   okay maybe about 103 words.


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