The Forestry Forum

General Forestry => Sawmills and Milling => Topic started by: Mt406 on July 11, 2018, 03:42:27 PM

Title: I think my mill has a drinking problem
Post by: Mt406 on July 11, 2018, 03:42:27 PM
My day is going good cutting lap siding for my own house.
Customer picks up his order and asks if cash is all right. (if you insist)
Have a quick bite and back to the mill.
Just before lunch cut 20 wide no problem.
After lunch I am just cutting along (maybe just a little Cocky I have cash in my pocket and were cutting good) And at the 7ft mark a little dive were ok life still good.
Now at 13 ft off on walk about.
19 in cut 4degree blade  Pondarosa pine green.
Have a good chuckle.
Hopefully your mill wasn't drinking at lunch :)
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(https://forestryforum.com/gallery/albums/userpics/33427/IMG_20180711_123552423.jpg?easyrotate_cache=1531337965)
 
(https://forestryforum.com/gallery/albums/userpics/33427/IMG_20180711_124355494.jpg?easyrotate_cache=1531337968)
 
(https://forestryforum.com/gallery/albums/userpics/33427/IMG_20180711_124427812_HDR.jpg?easyrotate_cache=1531337970)
 
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Title: Re: I think my mill has a drinking problem
Post by: Pjames on July 11, 2018, 03:59:35 PM
Looks like time for a blade change 🙈🙈
Title: Re: I think my mill has a drinking problem
Post by: Mt406 on July 11, 2018, 04:04:03 PM
new at start of log and another new now
Title: Re: I think my mill has a drinking problem
Post by: Pjames on July 11, 2018, 04:21:50 PM
Did second one fix it??
Title: Re: I think my mill has a drinking problem
Post by: mike_belben on July 11, 2018, 10:38:27 PM
Apparently the blade was drinking at a dive bar.  
Title: Re: I think my mill has a drinking problem
Post by: Brucer on July 11, 2018, 11:02:11 PM
Overheated blade? Not drinking enough fluids ???

I've seen cuts like that in wide spruce.
Title: Re: I think my mill has a drinking problem
Post by: Mt406 on July 12, 2018, 12:58:35 AM
New  blade helped some.
That was one log that didn't want to be lumber.
I use diesel on my blade instead of water.
Had so much pitch build up even with diesel drip every 2 seconds
Saw dust was so sticky it would build up on mill and fall off clumps
And yes the blade got hot and lost tension.  
Title: Re: I think my mill has a drinking problem
Post by: WDH on July 12, 2018, 08:19:10 AM
Some logs are just like that.  Difficult.  Like some people. 
Title: Re: I think my mill has a drinking problem
Post by: delvis on July 12, 2018, 11:49:13 AM
I used to used off-road diesel mixed with ATF.  I switched over to water and Dawn dish washing soap and it works so much better, is hundreds of times cheaper,and I'm not dripping fuel all over the ground and my finished product.  Helps greatly to have a powered blade lube system too!
Title: Re: I think my mill has a drinking problem
Post by: KODAK on July 12, 2018, 12:59:23 PM
Nice! Does the blade develop surface rust with the water sitting on the blade on guides?
Title: Re: I think my mill has a drinking problem
Post by: MobileSawMilSlo on July 12, 2018, 03:16:17 PM
Hi

My experience is that I MUST NOT cut pine with blades less than 10 degrees. 
If I would use 7 degrees I would get big waves like yours. But this is pine here in Slovenia and yours is sure different.
Title: Re: I think my mill has a drinking problem
Post by: CX3 on July 12, 2018, 07:33:06 PM
Walkabout lol
Title: Re: I think my mill has a drinking problem
Post by: LoneDuck on July 12, 2018, 08:41:54 PM
I understand your pain. I'm trying to get enough of more or less the same pine to finish the house and cring when it happens. I have such a hard time finding logs and any waste is hard.
Title: Re: I think my mill has a drinking problem
Post by: Mt406 on July 13, 2018, 01:03:43 AM
I may try going back to water and cascade I have some of that around the saw shed.
I am thinking with the pitch build up and long wide cuts I am getting heat in the blade.
The next batch of Pondo are long logs 18-20s I going to buck them to shorter length.
I was side tracked today will be back at the saw dust mine tomorrow.
I will post as things progress. 
Title: Re: I think my mill has a drinking problem
Post by: Brucer on July 15, 2018, 10:21:41 PM
Water will do a better job of cooling the blade. You will probably go through it pretty quickly ;D.
Title: Re: I think my mill has a drinking problem
Post by: Ljohnsaw on July 16, 2018, 12:51:19 AM
I cut down some Pondarosa and it was oozing sap.  So I figured I pour on the water/pinesol.  Blade kept diving.  Stopped the water and it cut fine.  Another log, another blade and same results - water, dive - no water, fine.  Go figure.
Title: Re: I think my mill has a drinking problem
Post by: thecfarm on July 16, 2018, 05:28:18 AM
KODAK,welcome to the forum.
Title: Re: I think my mill has a drinking problem
Post by: Peter Drouin on July 16, 2018, 06:05:32 AM
I cut all the time dry, If I get some pitch I turn on plain water for one or two cuts and the blade is clean. What happens is most guys cut too slow. That heats up the blade and you have trouble. Sharp blade and cut as fast as the mill will cut and have less trouble. For me mixing all the junk in the lube is a waste of time. Now if you want to cut faster push the set out on the blade. You will have more sawdust and cut lumber at the end of the day.
Good luck. 
Title: Re: I think my mill has a drinking problem
Post by: PA_Walnut on July 16, 2018, 07:05:50 AM
Looks like the work of the infamous Turbo7°! (on my wide, they are NO DEAL for big cuts). :-\

As Peter says, going too slow heats the blade, but going too fast slows it down and causes The Dive...delicate dance.
Odd for a 4° though. I think you could cut steel beams with those things!  :D
Title: Re: I think my mill has a drinking problem
Post by: 123maxbars on July 16, 2018, 08:28:52 AM
Quote from: WDH on July 12, 2018, 08:19:10 AM
Some logs are just like that.  Difficult.  Like some people.
well said,
Title: Re: I think my mill has a drinking problem
Post by: Chuck White on July 16, 2018, 08:41:56 AM
Quote from: Peter Drouin on July 16, 2018, 06:05:32 AM
I cut all the time dry, If I get some pitch I turn on plain water for one or two cuts and the blade is clean. What happens is most guys cut too slow. That heats up the blade and you have trouble. Sharp blade and cut as fast as the mill will cut and have less trouble. For me mixing all the junk in the lube is a waste of time. Now if you want to cut faster push the set out on the blade. You will have more sawdust and cut lumber at the end of the day.
Good luck.
I just noticed something different while sawing just the other day!
I was sawing W/Pine 1", and noticed a lot of sawdust coming out of the kerf over the body of the band and just behind the band, and increased the speed a little and the sawdust started coming out on the front of the band!
I guess I just need to keep an eye on this in the future!