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Author Topic: HM126 band blade set and maybe switch to circle mill  (Read 1061 times)

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Offline mitchstockdale

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HM126 band blade set and maybe switch to circle mill
« on: July 24, 2019, 12:52:42 PM »
I have been struggling horribly with wavy cuts on my HM126... I have spent tons of time diligently going through the set up trying to weed out the problem to no avail.   It has the 9.5hp kohler engine and runs 144" blades.  I have varied the blade tension, checked the bandwheel bearings, levelled the bed, ensured the guide blokcs are properly set.  Still got a case of the wavies.  

I just got off the phone with the fella who sharpens my blades and he told me he usually sets them for 28 to 30thou and by time he grinds them they end up being around 25 to 28 thou.  I then told him I am running a 9.5hp engine and he said "oh..maybe they should be set less... maybe around 22 thou" (my fault i never communicated my set up to him)  .  Not sure if this could be an issue but wanted to ask for some opinions on the matter since I have seen quite a few post on blade set but couldn't seem to find anything that fit my specific parameters. 

Also been thinking of trading up amidst this frustration and found a Mobile Dimension Saw portable mill for sale locally and have been thinking this might be a better choice for me to get out of the manual bandmill game and do more sawing than tinkering.

thoughts and comments?

thanks Mitch
Do today what others wont, so you can do tomorrow what others cant.

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Offline nativewolf

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #1 on: July 24, 2019, 12:55:58 PM »
Wish I could find a nice one down here.  I'd love to have a mighty mite or mobile dimension to saw fencing.  If you are doing dimensional lumber it seems like a great way to quickly put out some wood, provided you have some equipment.
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Offline Crusarius

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #2 on: July 24, 2019, 01:27:25 PM »
What material are you cutting? I can cut hardwoods smooth as silk but I am always fighting to get good cuts on softwood. The blade wanders terribly. I have 22hp and 158" blade.

Offline RAYAR

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #3 on: July 24, 2019, 01:29:33 PM »
Hi Mitch, another NB'er here.

Are you possibly getting pitch build up on your blade, especially on one side? If pitch build up accumulates higher than the set of the teeth, then that will cause deflection and waviness and also require more power to pull your blade through the cut. Running a thinner kerf will take a little less power but it will also take less build up on the blade to deflect it, especially with build up more on one side.

Ray
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Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #4 on: July 24, 2019, 01:45:30 PM »
What material are you cutting? I can cut hardwoods smooth as silk but I am always fighting to get good cuts on softwood. The blade wanders terribly. I have 22hp and 158" blade.
Crusarius,

I am cutting fairly big white an red spruce, fairly clear logs, some logs have knots...i do notice i am guaranteed to get a wave right after a knot. I have been peeling bark off down to the wood on the "blade in" side of the log.

Hi Mitch, another NB'er here.

Are you possibly getting pitch build up on your blade, especially on one side? If pitch build up accumulates higher than the set of the teeth, then that will cause deflection and waviness and also require more power to pull your blade through the cut. Running a thinner kerf will take a little less power but it will also take less build up on the blade to deflect it, especially with build up more on one side.

Ray
Hey Ray,  not much for pitch build up i keep my eye on things and always run a good amount of water..i think the blade options for my mill are fairly limited



Do today what others wont, so you can do tomorrow what others cant.

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Offline Crusarius

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #5 on: July 24, 2019, 02:03:05 PM »
Same boat I am in. I put a sharp blade on the mill and it made a world of difference. I definitely had pitch buildup on my last blade. So the new one cut so much nicer. I need to get a lube tank.

Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #6 on: July 24, 2019, 02:08:13 PM »
Same boat I am in. I put a sharp blade on the mill and it made a world of difference. I definitely had pitch buildup on my last blade. So the new one cut so much nicer. I need to get a lube tank.
last time i cut i needed some stagging planks and cut about 7  2x12 out of one log the blade was starting to get dull before i started but i wanted to push it to see what would happen and the waves arent horrible but still in my mind there shouldnt be any deviation it should be straight 
Do today what others wont, so you can do tomorrow what others cant.

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Offline btulloh

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #7 on: July 24, 2019, 02:20:32 PM »
The 9.5 hp closes off a few options but we have quite a few in spite of that.

What make and degree bands are you running?

I started with a box of 10 degr lennox I ordered with the mill. Switched to 7 degr kasco and got much better results on almost everything. I wont even use the 10s anymore unless its an extreme emergency. People have great results with Timberwolf but I havent tried them.

As long as I do everything right I get really straight cuts. My biggest mistake is pushing a blade too long. I dont get the bd ft Id like before the blade needs changing but thats just the way it is. If I keep a sharp blade on and keep the pitch off the blade and wheels I make straight cuts.
HM126

Offline Crusarius

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #8 on: July 24, 2019, 02:37:57 PM »
If I had my own sharpener I would definitely change my earlier than I do.

Offline Southside

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #9 on: July 24, 2019, 02:43:12 PM »
Even before I got to your statement I figured you had to be sawing spruce given your description and location.  You really can't push a dull band and expect good results, especially when sawing spruce.  It might help to go to a 7 or maybe even a 4 band.  Even with our high HP mills a dull band will cause issues.  I have not tried it yet but Kasco has a 4/40 band, it is a wildcat as it starts as a 7/40 and is ground down to a 4/40 and works very well in our yellow pine, the 4 makes it even easier to pull, so although it may be non-traditional to think of using a 4 for a softwood it might help with your Spruce issue.  
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Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #10 on: July 24, 2019, 03:05:37 PM »
The 9.5 hp closes off a few options but we have quite a few in spite of that.

What make and degree bands are you running?

I started with a box of 10 degr lennox I ordered with the mill. Switched to 7 degr kasco and got much better results on almost everything. I wont even use the 10s anymore unless its an extreme emergency. People have great results with Timberwolf but I havent tried them.

As long as I do everything right I get really straight cuts. My biggest mistake is pushing a blade too long. I dont get the bd ft Id like before the blade needs changing but thats just the way it is. If I keep a sharp blade on and keep the pitch off the blade and wheels I make straight cuts.
Yeah i am running the lennox 144" 10deg  that i ordered with my mill.  I will see if i can find some of those Kasco 7 deg blades here in Canada.
Do today what others wont, so you can do tomorrow what others cant.

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Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #11 on: July 24, 2019, 03:14:05 PM »
Even before I got to your statement I figured you had to be sawing spruce given your description and location.  You really can't push a dull band and expect good results, especially when sawing spruce.  It might help to go to a 7 or maybe even a 4 band.  Even with our high HP mills a dull band will cause issues.  I have not tried it yet but Kasco has a 4/40 band, it is a wildcat as it starts as a 7/40 and is ground down to a 4/40 and works very well in our yellow pine, the 4 makes it even easier to pull, so although it may be non-traditional to think of using a 4 for a softwood it might help with your Spruce issue.  
Thanks for the input, if i gleaned anything from your post it sounds almost as if what i am dealing with is just the nature of the beast with cutting spruce and my current set up.
Do today what others wont, so you can do tomorrow what others cant.

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Offline btulloh

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #12 on: July 24, 2019, 03:26:53 PM »
So true about the nature of the species being sawed. Thats just one of the many things I learned along the way and still learning. Some of it I learned the hard way and some I learned from the people here.

I learned I dont like hickory. More than once. I dont even care to make firewood with it. Plenty of people here make beautiful stuff out of hickory though. They are welcome to all my hickory logs.
HM126

Offline RAYAR

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #13 on: July 24, 2019, 03:41:14 PM »
I also started out with Lennox 10 degree blades. I'm currently awaiting on delivery of Kasco Woodmaxx 7 degree blades. Mine are a custom length and are being made up in Mexico, then delivered to the head office/depot in St. Louis, then forwarded to the Montreal office/depot and sent on to me from there.

I'm also soon to be upgrading my engine from a 13HP manual to a 15HP electric start. I currently have the new engine.
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Offline ladylake

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #14 on: July 24, 2019, 03:41:51 PM »

 Forget the 7 go right to 4, I get the best results in ugly knotty spruce using a 4  3/4 pitch with a shallow gullet (more blade body)  with a heavy set.  I wont even try to saw spruce with a 10 blade.   Steve
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Offline RAYAR

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #15 on: July 24, 2019, 03:47:35 PM »
A blade that has dulled more on one edge than the other due to possibly contacting more abrasive on that edge will tend to veer away from that duller edge. The harder you push a dull blade, the more it will deflect.
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Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #16 on: July 24, 2019, 03:55:45 PM »
I also started out with Lennox 10 degree blades. I'm currently awaiting on delivery of Kasco Woodmaxx 7 degree blades. Mine are a custom length and are being made up in Mexico, then delivered to the head office/depot in St. Louis, then forwarded to the Montreal office/depot and sent on to me from there.

I'm also soon to be upgrading my engine from a 13HP manual to a 15HP electric start. I currently have the new engine.
How did you order those Kasco's and what was the price tag like...being Canadian Im sure you can share in my frustration of how difficult and expensive it is to get something from the US
Do today what others wont, so you can do tomorrow what others cant.

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Offline mitchstockdale

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #17 on: July 24, 2019, 03:59:13 PM »

 Forget the 7 go right to 4, I get the best results in ugly knotty spruce using a 4  3/4 pitch with a shallow gullet (more blade body)  with a heavy set.  I wont even try to saw spruce with a 10 blade.   Steve
Who makes a 4 deg?..Just a quick look through the Kasco Site and blades that meet the spec for my mill are only available in 10deg
Do today what others wont, so you can do tomorrow what others cant.

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Offline btulloh

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #18 on: July 24, 2019, 04:03:07 PM »
Kasco makes them for your mill. Theyre not listed on the website but they are a standard item.

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Re: HM126 band blade set and maybe switch to circle mill
« Reply #19 on: July 24, 2019, 04:07:37 PM »
Kasco Canada : 1-800-361-3329 
HM126


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