Name: エンジ材とは？マイターソーテーブルを作ろう!#チームツリー (What is Enginered Wood? Building a Miter Saw Table! #TeamTrees)
Uploaded: 2021-01-14T09:52:55.000Z
Duration: 13 min 45 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

程度の副詞

So trees are pretty cool. They take carbon out of the air and turn it into oxygen that

様態の副詞

we breathe. Pretty important. Trees take that bad carbon and turn it into wood. Wood literally

grows on trees. We plant good stuff and we get more good stuff in return. You reap what

you sow. Today we're going to talk about different types of wood and how humans can make wood

themselves, while I show how to build this workbench behind me. One of these days I want

to make one of those cool epoxy river tables that you see on Instagram, but I'll save that

You might have heard about something on the Internet lately called #TeamTrees. A bunch

of people all over the world are joining together to raise 20 million dollars to plant 20 million

trees. One dollar equals one tree. And we're almost there. Currently we're sitting just

shy of 15 million dollars. I was going to donate $10,000, but then I saw Linus donating

$10,000 and I couldn't let him beat me. So I'm one-upping him with $15,000. $15,000 equals

15,000 trees planted. And the cool thing right now is that YouTube is actually matching the

donations - $ 1 million worth. So that $15,000 that just got donated is now $30,000. And

your YouTube donation can be doubled as well. They're still doing it. Nobody can do it alone

though. It takes a team. So if you enjoy oxygen, find that YouTube donation link somewhere

around this video, or go to TeamTrees.org and donate directly on the website. And by

our example we can show everyone that the planet is important. The link is down in the

description. Now it's time to show you how I built my workbench.

So I recently moved shop and I don't have a good spot to put my power tools – you

know, my table saw and my miter saw. Right now I just have this white desk and it adjusts

up and down but it's not super convenient. So today I'm going to build something that

fits in this place that works a lot better for the woodworking tools that I'm going to

put there. It is weird in a video about planting trees that I'm using cut down trees for this

project. But a lot of this wood has been salvaged from other projects and was just laying around

and would have been thrown away. I've jotted down some tentative ideas of what I want this

project to turn out like, but since I haven't built it yet and the plans aren't finalized,

it'll be interesting to see how this turns out.

So I'm going to be using these larger posts as the table legs. You might have noticed

that these 4x4's have little notches in them. That's because this particular wooden post

is pressure treated – meaning that it's designed to be used outdoors, like for a deck

The wood is soaked with preservative chemicals in a pressure chamber, and the wood absorbs

those chemicals to keep the wood from decomposing with time or being eaten by bugs. Little grooves

dug into the sides of the wood help the preservative sink in deeper inside the beam. From the cross

section of the wood you can see how deep the chemicals from the treatment seeped into the

wood. The little grooves in the side help facilitate that. Of course once it's dries

it's totally safe to touch and work with. But you still never want to burn pressure

The most common size board used in construction is a 2x4, which means that the board is 2

inches by 4 inches. Fun fact – the board is not actually 2 inches by 4 inches, it's

1 ½ by 3 ½. You can see from this diagram of how a round tree is cut into different

sized boards. The rough cut dimensions are indeed the exact 2 inches by 4 inches, but

after it's been dried and smoothed out, it shrinks a half inch on either side. But we

Wood glue is a yellow adhesive designed specifically for wood, and when it's dried it's stronger

than the wood itself. Since I'm screwing everything together, I don't really need the glue, but

my Grandpa Jerry, who this channel is kind of named after, he would slather glue on all

of his woodworking projects. So we might as well throw some on for good luck.

The problem with naturally grown pieces of wood is that as they dry, they warp a bit.

They twist, Especially if they aren't stored flat. So these minor variances have to be

taken into account during construction. Now that the top is framed out, I can flip it

over and frame the bottom shelf. So using salvaged wood scraps like this might mean

that the work bench doesn't look as pretty, but you know, it's a work bench so it's not

Now that the frame of the table is finished, the whole thing will eventually be mounted

on wheels so it'll be off the ground. The bottom shelf is attached to the inside of

the leg pillars so I'll never hit my shins on it when I'm working next to the table.

For the bottom shelf supports I could use any 2x4, but since I have some scraps laying

around, we'll use this instead. Engineered lumber is where things start to get cool.

A large board like a 2x10 can be used as a beam. But larger and longer wood has a tendency

to be irregular with knots, splits and weak point inconsistencies that you can't trust

to support very heavy loads. This is where engineered lumber comes in. This lower shelf

definitely isn't considered a heavy load of course, but I can still cut this scrap down

to the size I need. These man-made, perfectly straight and true beams can handle consistent

loads every single time. And because of that they're used a lot in residential construction.

Small wood fragments are glued together and steam pressed to make these beams. This particular

fragment was previously headed to the dump, but now it's found a second life supporting

I'm using an MDF sheet to cover the shelf surface. And before I explain how that's made,

this clip shows the reason I'm mounting the table saw flush with the top surface of my

workbench. When ripping or cutting long pieces of wood, it really helps when both the sides

and the end of the board are supported and the worktable I'm building will be able to

You can see that the sheet I just used is made up of very fine fibers. This is MDF,

or medium density fiberboard. Another engineered piece of wood. It starts off as a tree of

course, but then is ground up, steamed, and fluffed into fibers. Then combined with a

resin or wax and is hot pressed into a long flat board. The nice thing about MDF, particle

board, and plywood, which we'll talk about in a minute, is that they can all be made

from the leftover dust and chips from milling regular boards. None of the tree is wasted.

The top of the table is rather complicated since I want to mount my miter saw into the

table so that the surface of the saw is flush with the surface of the table, making it easier

for me to cut long boards. To do that, I'm going to take a 2x6, which is a slightly wider

version of a 2x4, and rip it to the same depth as my miter saw. In my case, about 4 ½ inches.

That way when I frame the top of the table I can make a little square cut out in the

center for the saw to sit in. You'll see what I'm talking about in a second.

All the support boards I have here in the center are going to keep the top of the table

sturdy and steady. The top of the table is another thicker piece of MDF. The same engineered

fiber type board we used for the bottom shelf. Since I don't have my table top saw mounted

yet I'm just using a circular saw to cut the large sheet the right way. It's a bit slower

and not quite as exact, but still gets the job done. All of these saws accomplish different

Alright the table saw cut is done. Now we just need to cut out this little portion here

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エンジ材とは？マイターソーテーブルを作ろう!#チームツリー (What is Enginered Wood? Building a Miter Saw Table! #TeamTrees)

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