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Started by VB-Milling, May 02, 2021, 08:40:01 AM

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VB-Milling

Quote from: Don P on May 02, 2021, 10:16:01 PM
One thing we'll do is make the initial cut from the ladder running with the bar perpendicular to the log. The next cut we'll run diagonal to try to hit the high spots and improve the surface level. The next cut is either perp or diagonal the other direction. Basically trying to avoid riding in and duplicating any surface irregularities from the previous cut.


Making multiple passes never occurred to me, but it makes sense as that first surface dictates the quality of the rest of the cuts.  Thanks!

HM126

VB-Milling

Quote from: mike_belben on May 02, 2021, 10:39:17 PM
I am one who acquires what others discard.  This bar wouldnt buck a piece of firewood with a new chain.  Itd cut a crescent and stall in the cut until it smoked and sparked.. Weve all been there.  


I made a bar rail closer and got pretty good at fitting rails to drivers and dressing/squaring them up.

Once I have a new bar in hand, I'll definitely be playing around with the "junk" bar and see if I can revive it.  It would be nice to have 2 or more bars anyways.

Is your bar rail closer something you made to fit in a vise?
HM126

VB-Milling

Quote from: Tacotodd on May 03, 2021, 12:40:41 AM
Yeah, we've ALL made some, uh, silly mistakes concerning a chainsaw, but you'll learn, that's how we progress (in general). But the trick IS TO LEARN. None of US are perfect, but we can only try harder for the next day and the next time. Like OGH's sign-off on his staying out of trouble thread, "tomorrow is another day", and so it always will be, for us at least.

Just be careful when you're using the "powered" grinders, it is too easy to get to aggressive with them and ruin a chain. Heat damage AND never being able to hand sharpen again. But (thank you heaven) it's a consumable. Less expensive than a new saw & easier to buy & replace than piston rings.
I'll make many more CSM'ing mistakes and I look forward to all the lessons from it.  Then we can start the process all over again when I start BSM'ing LOL.

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mike_belben

I started off with a homemade alaskan and that needed a ton of muscle to move at all.  I rigged up a string winch to act as my tip end partner and it worked but i always had a seesaw cut pattern that made obviously chainsawed lumber.


Needing planks from a chainsaw, i finally made a junkpile track and carriage for the sawhead to ride on and its 10x better than alaskan.  Partly due to the clean lumber finish and partly due to the ease of clamping a log and maintaining squareness because of backstops.  Never laddering and no tee squares etc.  The saw also does not need winching anymore.. It just walks along.   Not fast like a bandmill and the feedrate is the feedrate no matter how much you push.  But you dont really have to push hard like an alaskan.  Just keep it running and keep pressure and itll creep forward throwing wood out the side.  When it takes more oomph to go forward something needs looking at. Stop right there and itll cost less.


I dont have any more bar wear issues since im not absolutely cranking the bar and chain into the wood.  Theres a lot less friction.  Doesnt really matter what i have on for a chain.  New or sharpened down, 10* or 30*  ...its pretty consistent.


I do a lot of pauses to idle off heat and about 3 or 4x per 10 foot log ill give a squirt of oil at the tip to shed heat.  If the chain will sizzle oil youve got to make some changes or its gonna eat up.


However.. Once the chain is leaning over theres doom on the way.  Nothing cuts when the bar kerf wallows.  If youre gonna stick with CSM you better tool up to maintain bar kerfs.  You can start with .050 bar and chain then dress them to .058 and finally .063 before making signs out of them or whatever.  The tops of the rails will continually get narrower but it isnt the width of the rail top that keeps the chain sitting on it straight.  Its the fit of the driver into the cheeks of the bar sideplates.  Like a long keel on a boat.   It cant rock if the keel is physically restrained in some type of saddle.  Unfortunately chains seem to be harder than rails these days.  IMO bars should be a bit harder and chains soft so that your drivers wear away and you just replace the chain back to tolerance.
Praise The Lord

VB-Milling

Quote from: YellowHammer on May 03, 2021, 07:57:10 AM
Are you using a steel cable on the hand crank?  Its better to use a piece of nylon rope or cord, pretty thin, so that it stretches and provides a better, smoother, softer pull.  

How are you oiling?  I ran a CSM for the better part of a year and never gapped a bar.  I did wear out the powerhead eventually.  I used lots of oil, and eventually even used a water drip from my garden hose.  

CSMillimg is hard on everything.  

If you want to see your saw cutting ribbons and strings, lay it parallel to the log, and dog from the end of the log, as if you were trimming off a root flare.

Sounds like you found a problem with the chain and bar.  Good catch.

No hand crank setup.  Pushing it down the log with a hand on the powerhead and a hand on the mill handle.

Oiling just using the factory setup.  Trying to be diligent about keeping the galleys freeflowing.  Top off the bar oil every fuel fill up.

When I started to look into buying a bigger powerhead for those larger logs, getting a legit Granberg or similar with a hand crank and aux oiler, getting actual adjustable guide rails instead of a ladder etc etc, I realized I'd be pretty close in cost to a hobby level BSM so that is the direction I'm heading in.

HM126

VB-Milling

Quote from: mike_belben on May 03, 2021, 08:20:56 AM
Needing planks from a chainsaw, i finally made a junkpile track and carriage for the sawhead to ride on and its 10x better than alaskan.  Partly due to the clean lumber finish and partly due to the ease of clamping a log and maintaining squareness because of backstops.  Never laddering and no tee squares etc.  The saw also does not need winching anymore.. It just walks along.

However.. Once the chain is leaning over theres doom on the way.  Nothing cuts when the bar kerf wallows.  If youre gonna stick with CSM you better tool up to maintain bar kerfs.  You can start with .050 bar and chain then dress them to .058 and finally .063 before making signs out of them or whatever.  The tops of the rails will continually get narrower but it isnt the width of the rail top that keeps the chain sitting on it straight.  Its the fit of the driver into the cheeks of the bar sideplates.  Like a long keel on a boat.   It cant rock if the keel is physically restrained in some type of saddle.  Unfortunately chains seem to be harder than rails these days.  IMO bars should be a bit harder and chains soft so that your drivers wear away and you just replace the chain back to tolerance.


The track and carriage sounds similar to what I see on Norwood's site and probably many others .

https://www.norwoodsawmills.com/portamill-pm14

Your last paragraph is much appreciated and is explaining exactly what I was still a little confused on so thank you for that.
HM126

mike_belben

You really need a beltsander with an adjustable fence/table and a good tee square to get the fence adjusted to the belt.  Now sand the rail tops until they clean up equally.  


Imagine a train on a track where water has washed out the passenger side ballast and the tie is soft with termites.  That train will continually dip toward the passenger side.  Now imagine the train rides in a very narrow subway tunnel.  Its gonna keep hitting the wall.   

Now in wood, youre chain cutters are moving and the wood bears witness to the pothole in your track.  So its not JUST your sideplates.. Its also the tops of the tracks.  Youve simply got to stay ontop of all aspects of bar maintenance and accept them as begrudging consumables. 
Praise The Lord

VB-Milling

Quote from: mike_belben on May 03, 2021, 08:41:44 AM
You really need a beltsander with an adjustable fence/table and a good tee square to get the fence adjusted to the belt.  Now sand the rail tops until they clean up equally.  


Imagine a train on a track where water has washed out the passenger side ballast and the tie is soft with termites.  That train will continually dip toward the passenger side.  Now imagine the train rides in a very narrow subway tunnel.  Its gonna keep hitting the wall.  

Now in wood, youre chain cutters are moving and the wood bears witness to the pothole in your track.  So its not JUST your sideplates.. Its also the tops of the tracks.  Youve simply got to stay ontop of all aspects of bar maintenance and accept them as begrudging consumables.

Thanks Mike.  Makes perfect sense.  I've got a fully outfitted 2 car garage woodshop with all the toys so doing what your saying with the belt sander will be easy.  Staying on top of it is the hard part LOL  :D
HM126

leeroyjd

Hello VB ,
Maybe I've missed it but what saw are you milling with?
If it's 80cc or more you may want to lower the depth gauges much lower than guides will allow. Once you have bar and chain issues sorted out of course. In my opinion when you are making sawdust like a circular sawmill does the milling is enjoyable. If you feel your chain is sharp, but seems slow with more of a powdery sawdust, take a swipe or two of those depth gauges and try it. 

leeroyjd

Pferd Universal Edge Sharpener Guide Bar Dresser

These work very well for keeping bar rails true.
Bar rail closers can be found too, be carefull not to close the rails too much.

VB-Milling

Quote from: leeroyjd on May 03, 2021, 09:34:28 AM
Hello VB ,
Maybe I've missed it but what saw are you milling with?

It was buried back in my first post.  Its a Husky 460 Rancher.  60cc if I remember correctly.  It was as much saw as I could afford at the time.

I took a lot of flack for buying a Husqvarna while living 3 miles from the Stihl headquarters and manufacturing plant in the US.  :D
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leeroyjd

That's funny about being 3 miles from Stihl headquarters!
 Being in the 60cc class, go slow when lowering depth gauges,
but I still think you'll want to go lower than you would for cross cutting.

YellowHammer

For an Alaskan mill style, a hand crank is easy to fabricate and works extremely well.  Get a piece of steel rod from Lowe's, bend a handle on it, slide it in two holes you drill in the uprights, feed on some nylon cord (note in the photo how it is fed under the crossbar) and get to cranking.  The small diameter crank rod gives huge leverage and the stretchy nylon cord gives forgiveness.  

Just pull the trigger and start cranking.  



 

 

YellowHammerisms:

Take steps to save steps.

If it won't roll, its not a log; it's still a tree.  Sawmills cut logs, not trees.

Kiln drying wood: When the cookies are burned, they're burned, and you can't fix them.

Sawing is fun for the first couple million boards.

Be smarter than the sawdust

VB-Milling

Quote from: YellowHammer on May 03, 2021, 10:42:43 AM
For an Alaskan mill style, a hand crank is easy to fabricate and works extremely well.  Get a piece of steel rod from Lowe's, bend a handle on it, slide it in two holes you drill in the uprights, feed on some nylon cord (note in the photo how it is fed under the crossbar) and get to cranking.  The small diameter crank rod gives huge leverage and the stretchy nylon cord gives forgiveness.  

Just pull the trigger and start cranking.  

Oh boy!  I sure like that design!

I'll check my metal scrap bin and see what I can come up with.  I know I got some rod in there somewhere!

Thanks for the pics YH! 



 
HM126

VB-Milling

Link to @YellowHammer original thread with a bit more detail in case anyone is looking for more information.

https://forestryforum.com/board/index.php?topic=65570.msg979358#msg979358

I think I can make something work from this pile I had kicking around.  Every time I organize all my junk, I just keep telling myself it will pay dividends when I don't have to waste time running around for stuff.



 
HM126

mike_belben

Quote from: leeroyjd on May 03, 2021, 09:38:52 AM
Pferd Universal Edge Sharpener Guide Bar Dresser

These work very well for keeping bar rails true.
Bar rail closers can be found too, be carefull not to close the rails too much.
I hate that tool.  But i will second not to close up too much which is easily done.  An equally ground chisel can flare them back open and pieces of grinding disc or sandpaper on a razor can hone up the burrs in the kerf.  Cutoff discs work in .063 and and maybe .058 but i dont think i have any fine enough for .050.  Think ive used a twistlock zip wheel for 050 with the pad and paper pulled away from each other.  Its tedious.
Praise The Lord

VB-Milling

Quote from: mike_belben on May 03, 2021, 12:11:40 PMI hate that tool.  But i will second not to close up too much which is easily done.  An equally ground chisel can flare them back open and pieces of grinding disc or sandpaper on a razor can hone up the burrs in the kerf.  Cutoff discs work in .063 and and maybe .058 but i dont think i have any fine enough for .050.  Think ive used a twistlock zip wheel for 050 with the pad and paper pulled away from each other.  Its tedious.
I appreciate the feedback.  I'll be playing with the old bar when the new bar comes in.

Quote from: leeroyjd on May 03, 2021, 09:38:52 AM
Pferd Universal Edge Sharpener Guide Bar Dresser

These work very well for keeping bar rails true.
Bar rail closers can be found too, be carefull not to close the rails too much.
I appreciate the link.  I'm hoping I can take what I've learned from this thread and get myself through the 10 or so logs I have to mill up.
HM126

leeroyjd

Quote from: mike_belben on May 03, 2021, 12:11:40 PM
Quote from: leeroyjd on May 03, 2021, 09:38:52 AM
Pferd Universal Edge Sharpener Guide Bar Dresser

These work very well for keeping bar rails true.
Bar rail closers can be found too, be carefull not to close the rails too much.
I hate that tool.  But i will second not to close up too much which is easily done.  An equally ground chisel can flare them back open and pieces of grinding disc or sandpaper on a razor can hone up the burrs in the kerf.  Cutoff discs work in .063 and and maybe .058 but i dont think i have any fine enough for .050.  Think ive used a twistlock zip wheel for 050 with the pad and paper pulled away from each other.  Its tedious.
Mike I am curious why you hate it?
I've got bars that each have hundreds of thousands of board feet on them as well as hundreds of cords of treelength and pulp. Only maintenance is with that Pferd.

VB-Milling

I'll take it for zero dollars and a half hour!  Thanks @YellowHammer 

Shaft is from an old Craftsman RAS and the handle is from a broken boat winch.

When I get my new chains and bar, I'll take it for a test drive.



 

 

 

 
HM126

Tacotodd

Don't look Ethellll;  but it was too late.    

Another one addicted 🥰😔
Trying harder everyday.

YellowHammer

Nice.  Pretty fancy for a CSM.  You'll really like this contraption.  Remember to feed the string low through the crossbar to keep the rig from jacking up under load.  Don't forget the high dollar screw in the other end of the log to loop the string.  
YellowHammerisms:

Take steps to save steps.

If it won't roll, its not a log; it's still a tree.  Sawmills cut logs, not trees.

Kiln drying wood: When the cookies are burned, they're burned, and you can't fix them.

Sawing is fun for the first couple million boards.

Be smarter than the sawdust

mike_belben

Quote from: leeroyjd on May 03, 2021, 04:27:09 PM
Mike I am curious why you hate it?
It may well just be me sucking at it, i got one early on and it didnt take me long to dull up all sides of the knife or to get one of the worst splinters ive ever had.  As a metalworker ive had some doozies but theres no sliver like a bar sliver.


One pass on the beltsander imo is much superior to a pferd.  Now in the woods theres obviously no argument for a beltsander.  


So its a good tool that i still reserve the right to hate. 
Praise The Lord

VB-Milling

The new chain and matched 0.058" bar was like night and day to the mismatched chain and bar gauge.  That was definitely the issue.  The hand crank fanciness was just icing on the cake.  Thanks to everyone who helped me get through this issue.  Milled a couple slabs each of white oak and lob pine.  This should get me by until my BSM gets here in Sept.



 

 

 
HM126

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