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Author Topic: I cut my sawmill in half!  (Read 16185 times)

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Offline canadianwoodworks

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I cut my sawmill in half!
« on: August 01, 2015, 08:35:20 AM »
This is part 1 of 2 in this first video I show the process of cutting a sawmill in half then bolting it back together to be able to mill lumber a stock width of 28'' then be able to extend to give a full width cut of 46''




Offline ScottInCabot

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Re: I cut my sawmill in half!
« Reply #1 on: August 01, 2015, 08:38:26 AM »
Going to go watch the vid! 

#1:  What about the weight concern of a 40+ inch diameter log?  Most WM mills are only rated for a certain amount of weight....


#2:  Very cool!!!





Scott in Cabot
Timber framing RULES!

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #2 on: August 01, 2015, 08:49:55 AM »
I don't think the weight of the log is an issue, yes the mill has a 3500 lbs axel but when milling the weight is transfered to the jack stands.  Think if you had a 20' log which was "regular" size it would be close to a 8-10-12 long log but double the diameter.

Yes fitting the log on can become an issue, although where I am most of the time I'll be cutting at 32-36''  maybe over 40'' at the crotch of a tree.

#2 thanks.... finger crossed.

Offline thechknhwk

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Re: I cut my sawmill in half!
« Reply #3 on: August 01, 2015, 09:04:15 AM »
Think you have enough horse power for the wide cuts?

Offline joejeep

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Re: I cut my sawmill in half!
« Reply #4 on: August 01, 2015, 09:20:46 AM »
Great video..thought about doing same thing. Looking forward to see  your results. Do you have any plans to compensate for your main tube torqueing when you extend the head out,,, I was sort of amazed how much cutter head lifted when you removed outer portion.
My wife says I do everything in excess

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #5 on: August 01, 2015, 09:53:03 AM »
Every time I talk to woodmizer here in Canada, I ask what do you think about the power? They always say you should be fine, of course a slow cut anyways because of the width.

Also I plan on doing a cut or 2 per blade then change, when cutting 40'' plus.

Time will tell.... (-:

Think you have enough horse power for the wide cuts?

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #6 on: August 01, 2015, 09:54:17 AM »
Others around my area have done the same, one actually extended to cut 52''. He has nothing special to deal with the weight shift.

One reason I did go with aluminum, saved about 140lbs on the insert.

Great video..thought about doing same thing. Looking forward to see  your results. Do you have any plans to compensate for your main tube torqueing when you extend the head out,,, I was sort of amazed how much cutter head lifted when you removed outer portion.

Offline fishpharmer

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Re: I cut my sawmill in half!
« Reply #7 on: August 01, 2015, 11:36:14 AM »
Nice job!  I think you will be fine with the horsepower on wide cuts.  Just slow it down and use the sharp blades.
Built my own band mill with the help of Forestry Forum. 
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Offline deadfall

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Re: I cut my sawmill in half!
« Reply #8 on: August 01, 2015, 12:35:11 PM »
I don't think the weight of the log is an issue, yes the mill has a 3500 lbs axel but when milling the weight is transfered to the jack stands. 

Should keep this thread in mind when trusting the jacks to do extra duty:

http://www.forestryforum.com/board/index.php/topic,84696.0.html

BTW, I think what you are doing is great.  There have been many times I could have used such an option.
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Offline pineywoods

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Re: I cut my sawmill in half!
« Reply #9 on: August 01, 2015, 12:48:05 PM »
@dean herring have you watched this video. ? Might be a solution to what you have been looking for. Easily done by any competent fab shop. I've thought about doing this, but sorta backed off due to requiring custom made blades. This way, you can still use standard blades until a big log comes along, then open up the throat and mount a long blade.
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Offline ljohnsaw

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Re: I cut my sawmill in half!
« Reply #10 on: August 01, 2015, 02:05:34 PM »
 ???  Where is part 2?

Nice job.  Like the routing of the aluminum blank.  You didn't mention about taking it down to the overall size.  How did you do that, table saw?
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Offline Delawhere Jack

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Re: I cut my sawmill in half!
« Reply #11 on: August 01, 2015, 05:38:57 PM »
I would seriously consider dropping the aluminum bar approach, and simply have a section of steel tube welded in to go up to 184" bands. That would add 13" to your maximum width of cut.

Consider that each time you extend the head it will require realigning the band rollers.

Also, have you ever tried turning 40" logs with the claw turner? It's not fun.... :(

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #12 on: August 01, 2015, 07:39:02 PM »
I would seriously consider dropping the aluminum bar approach, and simply have a section of steel tube welded in to go up to 184" bands. That would add 13" to your maximum width of cut.

Consider that each time you extend the head it will require realigning the band rollers.

Also, have you ever tried turning 40" logs with the claw turner? It's not fun.... :(

There should be no issue of alignment, it's bang on right now while cutting at it's stock width, once I get my longer band I'll put it on adjust it till it's where it needs to be then bolt it solid, I plan to add a few welded nuts with bolts to act as set screws to help hold it where it should be.

I don't plan on rolling the logs, this would be for cutting slabs 3'' - 4'' think take slab off, cut another.

I think I'll also have a setting to use the 184'' bands.

But only time will tell, soon I hope to have part 2 ready to watch, but as of right now not attempted it.

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #13 on: August 01, 2015, 07:39:33 PM »
???  Where is part 2?

Nice job.  Like the routing of the aluminum blank.  You didn't mention about taking it down to the overall size.  How did you do that, table saw?

I initially had it machined at a local machine shop on a cnc mill

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #14 on: August 01, 2015, 07:39:57 PM »
I don't think the weight of the log is an issue, yes the mill has a 3500 lbs axel but when milling the weight is transfered to the jack stands. 

Should keep this thread in mind when trusting the jacks to do extra duty:

http://www.forestryforum.com/board/index.php/topic,84696.0.html

BTW, I think what you are doing is great.  There have been many times I could have used such an option.

Noted thank you!

Offline bkaimwood

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Re: I cut my sawmill in half!
« Reply #15 on: August 01, 2015, 08:53:50 PM »
I've looked at mine, wanting to do the same thing...think it will void the warranty? Hahahahaha!!! I know its alot to ask, but do you have drawings/blueprints of what the initial shop did for you? And what you had to fine tune afterward? I'm also wondering what year your mill is? And wondering the differences to mine...u have an lt40?
bk

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #16 on: August 01, 2015, 09:36:31 PM »
This one is a 1992 LT-40 Hydraulic, inside the tube measured 5 5/8'' x 1 5/8''.

Basically machine it to that size, then add the notch in the center on all sides... then go from there.

I sanded it with 80grit on those contact surfaces until I was happy with the fit. I used a punch that I tapped into the metal as a depth gauge.

Offline deadfall

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Re: I cut my sawmill in half!
« Reply #17 on: August 01, 2015, 09:48:58 PM »
You will definitely want to never get water in there with that aluminum and steel in that kind of close contact.  I would think that bar could freeze hard in there in very short order.  The better the fit, the easier it can seize.  I don't know what lube would work best for those dissimilar metals. 
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Offline 4x4American

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Re: I cut my sawmill in half!
« Reply #18 on: August 01, 2015, 09:55:07 PM »
Really cool!


I thought that in Canada you measured in millipeters!


Look forward to seeing part 2
Boy, back in my day..

Offline canadianwoodworks

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Re: I cut my sawmill in half!
« Reply #19 on: August 01, 2015, 10:00:23 PM »
You will definitely want to never get water in there with that aluminum and steel in that kind of close contact.  I would think that bar could freeze hard in there in very short order.  The better the fit, the easier it can seize.  I don't know what lube would work best for those dissimilar metals.

I read all the cans I could find, I settled on Fluid Film, it's a thick spray that says it says where you put it, it repels water, and dirt. I was very liberal with it, and plan to re coat.

I did though not actually think about freezing water in there, so i'm going to really its sealed well by the bolts. But I think what will makes a difference is that I will actually make a cover of something that will go around the angle grinder cut to help keep water


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