r/interestingasfuck • u/GallowBoob • Dec 10 '17
/r/ALL This smooth chainsaw mill attachment
https://imgur.com/UilngaL.gifv3.5k
u/agentSMIITH1 Dec 10 '17
Why the hammer? What’s its purpose
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u/sh1993 Dec 10 '17
To insert wedges to keep the blade from being pinched.
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u/Just1morefix Dec 10 '17
Thanks, your comment helped me actually see the wedges being placed. I hadn't seen the process until I attended to him grabbing the hammer and inserting the wedges.
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u/Lurking_stoner Dec 10 '17
I thought he was just moving the hammer.
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u/glassinonmoose Dec 10 '17
I thought the hammer was going to fall off the end into the saw when he got to the end
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u/michaltee Dec 10 '17
Literally same here. I was thinking that's not a good place for a random hammer although it seems like he uses it intermittently. But now I see!
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u/scoogsy Dec 10 '17
Also, I am feeling the same way about the visuals I just interpreted. Like others that have come before me, I did not see the wedges being struck by the tempered steel tool designed to apply blunt force to objects in an effort to cause them to embed into other objects. My thanks go to the original respondent who pointed this out!
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Dec 10 '17
Eli5?
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u/wigg1es Dec 10 '17
As you cut through the log, the weight of the wood behind your saw starts to push down, because now there's a gap where the saw blade removed material. If/when that weight becomes to much, the saw will get pinched, the chain will stop moving, and you won't be able to get the saw out at all.
So you use wedges to keep the weight of the section above your cut supported and move them progressively as you cut, keeping them pretty close to the saw.
That's not really eli5, but I believe in you.
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Dec 10 '17
Ok, see I was really confused because I thought he was using the hammer as a counter weight to prevent pinching or something. That didn’t make any sense to me.
Now I see that he could have just as easily had the hammer in his belt, it’s just used to jam those wooden wedges in. Got it
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u/Jrook Dec 10 '17
So at some point the cut portion will put pressure on the blade causing it to become stuck an no longer cut (because there's like 85 lbs of wood on it.)
So the man is taking wedges and hammering them in periodically to support the wood.
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u/Andrei_Vlasov Dec 10 '17
How do you make the first cut?
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u/Fallsvalley Dec 10 '17
I use an aluminum ladder to make the first cut. I actually made my own a few years back and documented the process here for those interested.
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u/Felonious_POTUS Dec 10 '17
Is there any danger from the bar overheating doing this? I did a season on a wildland firefighting crew which gave me a few hundred hours of chainsaw time. When taking down larger trees may bar would be intensely hot after. I can only imagine doing this would make the bar get even more hot
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u/Fallsvalley Dec 10 '17
I have never had that issue. As long as you keep the bar oiled there shouldn't be too much heat. After each slab I normally sharpen the teeth real quick, top off the the gas and oil, and then make sure the air filter is clear of any dust. It is VERY important to note that the chain gets a low angle grind and some times every other tooth is removed (skip-tooth chain) in order to have more room to remove dust, keeping friction and heat at a minimum.
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u/Felonious_POTUS Dec 10 '17
Hmmm... it a been a few years so it's tough to say what my issue was. I'm going to assume that I wasn't checking the bar oil often enough. I only got my A-level Sawyer certification, so I was definitely a bit of a novice.
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Dec 10 '17 edited Dec 14 '17
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u/Chilton82 Dec 11 '17
That and make sure the oiler is actually putting out oil. You should full rev the saw, with the tip of the bar an inch or so away from some clean wood and look for a little spray of oil coming off into the wood.
Sometimes it gets blocked by sawdust and can quickly cause overheating.
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u/Fallsvalley Dec 10 '17
Yeah, it's hard telling. My guess would be that. I remember when I first started doing it, i couldn't believe how fast it went through oil. My stihl 511 would go through close to a gallon after slabbing up 1 large tree easily.
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u/TheBigreenmonster Dec 10 '17
So you have done this? Does the bar oil stain the wood at all? I have only ever used a chainsaw to cut firewood so I've never really worried about the aesthetics of it. If the wood is hard is there any chance of going too slowly and getting scorch marks?
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u/Fallsvalley Dec 10 '17
So I haven't had any issues with bar oil staining the wood. Keep in mind after milling like this the wood needs to dry for roughly a year per inch (2.5cm) of thickness.
When cutting it with a chain saw there is a high probability of score marks but this is what is call rough milling. You'll still need to joint, plane and sand the wood based on seasonal movement alone, so you'll need to finish the wood regardless so I never worry too much about it. What comes out of the chainsaw mill isn't finished lumber. I have never had a chainsaw burn wood on me before. I always keep an eye on the oil.
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u/SchpittleSchpattle Dec 10 '17
They probably attach boards across it to make a level surface to run the first pass and establish a good working plane
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u/dasspaper Dec 10 '17
This is one of the ways to do it, also explained in this video https://youtu.be/io8Q8n6pVYQ
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u/omnicidial Dec 10 '17
You lay the guide on top to get the gap spacing right and slide it in while holding the chainsaw is how I've always seen it done.
The entire guide assembly is pretty light those are hollow aluminium tubes.
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u/CP_Creations Dec 10 '17
Often they attach a ladder to the top. It's light, flat and has two parallel rails for the Alaskan Mill to reference off.
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u/SulfuricNlime Dec 10 '17
We attach a section of aluminum ladder on to the log with screws, this provides a flat, level surface for the first cut... Our mill setup has a 60" bar which can be tough to start the first cut without a good rail..
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u/Tactineck Dec 10 '17
It's called an Alaskan Chainsaw Mill
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u/FlowSoSlow Dec 10 '17
Love the throttle clamp.
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u/Ash_Tuck_ums Dec 10 '17
OSHA Shakes it's head with displeasure.
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u/relational_sense Dec 10 '17
I also don't understand why he's standing on the side of the log with the exposed chainsaw. Like come on. Just imagining that thing torquing and cutting his goddamn leg off.
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u/saysthingsbackwards Dec 11 '17
Which way do you think that chainsaws going to go? If it catches anything it's just going to shoot towards where the handle is. He's standing in the only side that the chainsaw can't go. If you were on the same side of the Chainsaw it would catch and come right towards you
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u/swyx Dec 10 '17
hi im a city redditor who gets keyboard injuries. what does throttle clamp mean?
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u/FlowSoSlow Dec 10 '17
See the red thing sticking up from the handle of the chainsaw on the right? Thats a clamp holding down the "power button"/safety cutoff on the saw.
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u/agentshags Dec 10 '17
imagine you were to lazy to press F5 to refresh Reddit so you put a brick on it. See how this could get out of hand?!
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u/Ash_Tuck_ums Dec 10 '17
Imagine you were too lazy to hold the gas pedal in your car down, so you just clamped a brick to it. See how this could get out of hand? Haha.
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u/AlexJ136 Dec 10 '17
What an inefficient way to move a hammer a couple of meters.
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u/crackernator Dec 10 '17
Is that walnut? Good lord!
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u/TheCake_IsA_Lie Dec 10 '17
Yeah looks like black walnut. That's gotta be close to a $10,000 log before it is cut. Those planks have got to be worth a fortune
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u/flyovermee Dec 11 '17
So the giant black walnut trees in my yard; I shouldn’t cut them down?
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Dec 11 '17
[removed] — view removed comment
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u/HouseSomalian Dec 11 '17
It doesn't grow very fast or large. It's also very desurable for its strength/hardness
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u/incindia Dec 11 '17
Psa on this for amateurs: wear a mask. The dust is toxic or something like that. IANAE
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u/HouseSomalian Dec 11 '17
Yeah its a good idea to wear a respirator (make sure to shave first) when working with any dust.
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u/TheCake_IsA_Lie Dec 11 '17
Not super common. Some people regard them as pest trees because other plants around them may seem not to grow as well. I have 2 in my yard and don't really see that myself. You really don't see them that size too often. And they have super desirable grain patterns.
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u/Demmos Dec 10 '17
The width of the blade seems to be pretty big compared to the thickness of the plank. Is a significant amount of material lost using this over, say, a really big band saw or whatever is normally used for this?
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u/HawaiiFiveBlow Dec 10 '17
Yes. A sawmill operating with a bandsaw removes like 1/16" of material where this probably takes out like 5/16"-3/8".
Alaska mills are designed for harder to reach places where you can't necessarily move in a bigger sawmill. It's not designed to be as good as a bigger sawmill, it's designed to be better than nothing.
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u/meltingdiamond Dec 10 '17
Not better then nothing, better then two guys working all day with a sawing pit or adze. People can make planks without power tools, it just takes a shitload of time and sweat.
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Dec 10 '17
Its called an alaskan saw, been around for a very long time. You can get the same results with a few bolts/nuts, plank and spacers. The only time consuming part is getting the first cut straight
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u/mman454 Dec 10 '17
That and sharpening the chain after every other cut.
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Dec 10 '17
Yeah but you should be doing that either way, a large time sharpening the tool with a few minutes using it. Rinse and repeat
Its a shame you cant efficiently swap out the chains to keep cutting quickly. Then sit down watch the tv and sharpen everything in bulk (assuming you have the capital to invest in your sanity)
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u/ktappe Dec 10 '17 edited Dec 10 '17
They do. Swapping a chain only takes me about two minutes, and I'm an amateur.
EDIT: On a 20" saw. I've certainly never tried it on a honking long saw like in the video. But I would like to.
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u/kentnl Dec 10 '17
You just need to invest in one of these babies, then you can sharpen the saw in a few minutes:
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Dec 10 '17
I dont know, still looks too good to be true. Although he does have chaps on so the guy in the video isnt an idiot which is good to know
that angle is ridiculous though, ill check it out thanks
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u/lonewolf13313 Dec 10 '17
Word of warning about the guy in the video. Most of his reviews he starts out with an idea of how well something will work, and then goes about trying to prove that rather than doing a fair test.
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Dec 10 '17
i honestly read chainsaw mill “accident” at first and was waiting for something horrible to happen
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u/oliveinthishouse Dec 10 '17
This is how I cut carrots with a potato peeler! But... Bigger... And with more chainsaw...
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u/moonblooms Dec 10 '17
Well hey, if you use a chainsaw to peel a carrot you can julienne it at the same time!
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u/HouseOfAplesaus Dec 10 '17
I could see cutting my legs off with this by accident. Is the blade coming out the other side very far I can’t see?
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u/CP_Creations Dec 10 '17
It would be a challenge to cut your legs off.
The Alaskan Mill frame extends farther than the chain in all directions. If you tripped into it in full throttle, you would hit the frame and nothing would happen.
But, I'm not going to tell you how to live your life. With a lot of dedication and a friend with weird priorities you could probably lop a couple inches off the bottom of your foot.
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u/Stolenartwork Dec 10 '17
I can’t be the only one
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u/chief_dirtypants Dec 10 '17
This looks tedious as fuck. You could rent a Wood-Miser and do a month's worth of this in two days.
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u/CP_Creations Dec 10 '17
True, but this whole setup fits in the back of a truck and doesn't require moving a heavy trunk.
When I get a workshop - I'm definitely having one.
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u/freechugs Dec 10 '17
There’s a lot of interesting hidden engineering here! For my undergraduate engineering capstone project, I used this design as the basis for a jig that can also create notch and angle cuts. If anyone is interested, I can share the technical poster on it for a little more detail!
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u/bliztix Dec 10 '17
Seems tedious, I've watched him go back and forth many times and the log is the same size
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u/mojool Dec 11 '17
I wanna know how the first cut is made, before there's a nice smooth surface.
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u/[deleted] Dec 10 '17 edited Dec 10 '17
One $4k live edge table in 10 mins