On Fri, 05 Feb 2016 00:04:37 -0500, firstname.lastname@example.org wrote:
I'd never heard of an articulated man lift before, but I see that's
what they call them. I have a 35' pine that is dying. If I can't
save it ?? I will have to cut it down too. The land is sloped a
little and I'm guessing you were able to borrow yours because with
rental and delivery, $4-500 ?? , it might be no more to pay a tree
service to do the whole job.
How did you do this?
This sounds good if I could do it. How did you cut the trunk with a
pole saw. At an angle? And it fell where you wanted it to?
If I could get my tree to fall anywhere within a 60^ angle, at most it
would break a fence rail and a few pickets. I got a much smaller
tree to fall within 2 inches of where I planned.
I've learned a lot about cutting trees since I started heating with wood .
I attach a rope or chain as high as I can get , tie the other end to a cable
hoist or block and tackle that's attached to the bottom of another tree .
Put tension on the tree towards where you want it to fall and put a notch
1/3 to 1/2 way thru on that side . Cut straight across from the notch ,
tightening your pull as you get deeper into the cut . I've had a couple that
didn't fall exactly where I wanted them , but most land within a foot or so
of the target area . My biggest problem has been the trees hanging up on
other trees on the way down .
I've got a couple that need to come down where I'm going to build our
bedroom , shoulda taken them before I built the living room ...
On Fri, 05 Feb 2016 11:10:13 -0500, email@example.com wrote:
Wow. For less than that, maybe I can get a drone to loop a rope over
the top of the tree, to pull it in the right direction, and get a
laser to cut the tree from ground level.
Then when I'm done, I'll still have a drone and a laser.
Hey, I just made this up but it seems I'm not the first.
"Tree felling with lasers: a big idea in 1965 03/01/2005
But some ideas, such as tree felling with lasers, never materialized.
Although scientists seemed to understand that tree felling was not a
practical application for lasers, that didnt stop the visionaries of
the day from telling the world about the ominous potential for laser
tree-cutting technology at the 1964/1965 Worlds Fair."
Of course this article was written 10 years ago. If they have
brighter LEDs now, maybe they have sharper lasers.
"Woodworking, not tree cutting
While it was first reported in the Feb. 15, 1965, issue of Laser Focus
that felling trees with lasers was being researched by the University
of Michigan and the U. S. Forest Products Laboratory in Madison, WI, a
later story in the April 1 issue, Woodworking-not tree
felling-lasers forte, retracted the finding. The article noted that
investigation into the report had, however, unearthed an interesting
paper resulting from research done two years earlier by the same
principals.1 Apparently, Norman C. Franz of the University of
Michigans Department of Wood Science and Technology confirmed that
tree felling was only an idea. Equipment is not available at this
time to even research such a project, he said.
Instead, the research subjected wood samples with a range of densities
to repeated laser pulses of less than 1-ms duration from a ruby laser
with a maximum energy output of 3 J per pulse. Although depth of
penetration was less than 1/16 in. per pulse for a 0.03-in.-diameter
hole, it was concluded that the laser could be a practical
wood-machining tool if a high-power, continuous-beam, more-economical
laser system could be developed. "
Next time your wife's club gets one, let me know. Hmmm. I have a
friend of a friend with a bucket truck, but this tree is not close
enough to the street; I'd probably have to drive on a lot of sidewalk
and I'd break a bunch of that.
"Tree-felling idea dies hard
Despite the reduced ambitions of the scientific community in applying
lasers to tree cutting, Laser Focus magazine ran a story in the May
15, 1965, issue, Worlds fair exhibit projects laser tree-clearing
machine. It seems that the technological visionaries for the General
Motors Futurama exhibit at the 1964/1965 Worlds Fair in New York City
were not ready to let the idea die: in their ride into tomorrow
exhibit, an insect-like laser tree cutter, designed to saw off trees
at their base (see figure) preceded a massive jungle road-builder that
was envisioned to make an express highway through densely wooded
forests in one continuous operation.
The visionaries cannot be faulted for wanting to apply laser
technology to tree cutting; they can only be faulted for not
anticipating the high cost associated with high-power lasers. Despite
the ability of todays CO2 lasers to slice through 1/2-in.-thick wood
at 85 in. per minute, their multiple-thousand-dollar price tag still
cannot compete with a $200 chainsaw.
Cutting more than trees
The ultimate display of the power of todays lasers is exemplified by
the Pentagons Airborne Laser weapons system-a bank of chemical
oxygen-iodine laser modules boasting multimegawatt power levels (see
Laser Focus World, July 2004, p. 15). Back here on Earth, lasers for
cutting and machining continue to improve in performance and decrease
The ruby laser used in those early wood-machining experiments is now
joined by high-power CO2 lasers with nitrogen and oxygen assist,
solid-state lamp- and diode-pumped lasers, Nd:YAG, and excimer lasers,
as well as emerging femtosecond Ti:sapphire lasers.
Today, a 4-kW CO2 laser with oxygen assist can cut 12-mm-thick carbon
steel at 60 in. per minute.2 With power levels exceeding 5 kW,
solid-state lamp- and diode-pumped lasers, along with CO2 lasers, are
the primary types of lasers used in industrial machining and
materials-processing (see Optoelectronics Report, Jan. 1, 2005, p. 4).
However, femtosecond lasers, first reported to have exceeded the 1-pW
power threshold by Lawrence Livermore National Laboratories
(Livermore, CA) in 1996 (see Laser Focus World, July 1996, p. 13), may
eventually surpass other laser types for some machining and cutting
While the price of femtosecond lasers is still prohibitive for most
industrial uses, solid-state and CO2 lasers with power levels
sufficient for cutting wood have significantly decreased in cost. If
costs and corresponding market prices continue to fall, perhaps tree
felling with lasers will again be a big idea in, say, 2025? ?"
Another problem is that they were cutting at ground level. I want my
first cut to be about 30 feet high. Although maybe I cut lift it up
there with a drone. They didn't have drones back then.
Doesn't Woodcutter Barbie come complete with its own laser tree cutter
Good deal! I had a 40-ft Mexican date palm cut down - mostly one long
trunk. Trimmer climbed up and cut it down in 2-ft pieces, which I kept
and used to build a make-shift retaining wall / plant stands.
I need to trim off some broken limbs 8-10 inches in diameter that broke
off from the wind last week. I can handle the lower ones with my
reciprocating saw. What's the best way to attack the ones 8-10 feet
off the ground? I want to stay away from pole saws and chain saws.
I'm thinking about fastening my recip saw to a piece of 2x2 aluminum
angle aluminum. I'm a metal fab guy, and by I mean bolted and
supported properly with metal brackets, not fastened with duct tape.
But I would rather have something specifically made for occasional
homeowner use on limbs.
Anyway, any other ideas besides these that you have used for occasional
Well, I got the trimming done with my old Harbor Freight recipicating
saw and a 12-inch blade. Fastened it securely to an 8-ft 2x2, with the
cord unplugged I locked the swich "on" and ran the cord down the side.
Then I rested the body on the limb I was going to cut, plugged it and
then set the blade down on the limb and let its weight do the work with
no twisting or trying to rush it. While cutting I always kept the
extension cord in one hand so I could unplug it quickly if needed. Just
before the limb was cut through, I pulled the extension cord loose and
sawed back and forth by hand. No binding, kicking, etc. No close
I'm always way too cautious and if something is not going right, I bail
out and start a different way or just stop. I spent a lot of time
trimming all around the bigger limbs to be sure they would fall straight
down and not bounce toward me or the wrong direction. With one limb I
tied it to another tree to be sure it fell away from of some plants
which I had been giving specific instructions not to step on.
Even after doing this fine, hiring a tree-trimming is the best way to
go. I'm not recommending anyone else do what I did on account of I
don't know your skill level. If you are not familiar with tree limbs &
power tools I definitely would not do any tree trimming.
Will try to upload a few pictures later.
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