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  • [Music]

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

  • 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

  • for another video.

  • 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.

  • Let's get started.

  • [Intro]

  • So I recently moved shop and I don't have a good spot to put my power toolsyou

  • 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 treatedmeaning that it's designed to be used outdoors, like for a deck

  • or a fence.

  • [Sawing sounds]

  • 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

  • treated lumber in a campfire.

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

  • inches by 4 inches. Fun factthe 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

  • still call it a 2x4.

  • 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

  • meant to be pretty.

  • 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.

  • [Drilling sounds]

  • 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

  • my shelf.

  • 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

  • do just that once it's finished.

  • 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.

  • [Drilling sounds]

  • 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

  • things.

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

  • for the miter saw.

  • [Sawing sounds]

  • The saw I'm using now to cut the 2x4 frame off the

  • table opening is called a reciprocating saw. And this saw I'm using here to cut the top

  • of the MDF is a jigsaw. Measure twicecut once. Now that the top is cut, nice, I can

  • save the top piece and add it to the base of the miter saw opening.

  • So in order for me to mount the miter saw inside of the table, I'm going to use these

  • metal brackets right here. These are slightly modified construction framing brackets. I

  • just drilled a couple extra holes in them and mount it to the underside of the 2x6 that

  • we, you know, shortened up a little bit. That way they'll be able to handle the weight of

  • the puzzle piece chunk we cut out of the top board earlier, which is going to sit down

  • inside of this hole we framed out.

  • I have a feeling that we're going to add supports here in a minute, but I'm going to see if

  • the miter saw fits. Not too shabby. So I'll definitely need supports right here, but it

  • looks like everything is good. Once we get the top piece on it should be flush with the

  • bed of the miter saw. Now we just need to add the table saw portion after we get those

  • supports. So now I'm going to put the supporting pillars underneath the platform for the miter

  • saw.

  • And yeah, even though I'll be screwing the top board into place, I'm still going to be

  • adding glue everywhere because 1) that's what Jerry would do, and 2) it will help the table

  • structurally and keep it from twisting or bending because it will be totally secured.

  • I'm going to countersink the screw holes so that when I do screw in the top boards to

  • the table and they won't catch on anything sliding over the top. It turns out that my

  • metal strap idea wasn't strong enough for my miter saw so I added some 2x4's underneath

  • the miter saw cutout to help support the saw and give me a place to screw the saw into

  • the table to help hold it in place.

  • And there we go. The miter saw is in position, flush with the surface of the work table.

  • Now we just have to build the side rack for the table saw. This is also going to sit flush

  • with the table top so it can simultaneously use the surface of the table and also be the

  • surface of the table if needed, since the surface of the saw is flat and it can retract

  • the blade into itself. For the table saw rack we're going to use particle board. This is

  • a much lower quality version of the MDFalso cheaper. And is actually made from hot pressing

  • sawdust into a sheet instead of using fibers. The particles are much bigger than fibers

  • and it's not quite as strong. But I had some saved from some old shelves I tore out, so

  • here we are, giving it a second life. It'll be supporting the same saw that cut it in

  • half.

  • Luckily, now that the miter saw is positioned in the table, I can use it to cut the boards

  • for the table saw rack. Getting off the floor is a welcome change. The trickiest part of

  • this side rack is to get it to the right height. If the saw sits too low, it'll defeat the

  • whole purpose. Using some clamps, math, and measuring, I was able to get things pretty

  • well figured out. Once the saw's framed to where I want it, I can quickly cut the OSB

  • for the lower shelf. OSB or oriented strand board is also engineered and man-made. Except

  • this time, instead of using fiber or sawdust, it's using larger yet still super thin strands

  • of wood. These thin chunks of wood are all then heat pressed into one massive sheet.

  • The cool part about all these different wood products I've used in this table is that nothing

  • goes to waste from the tree when they were being made since every part of the tree can

  • be used. Trees also grow pretty quick and they are renewable. And sustainably managed

  • forests are a net positive for the environment. Even though the trees get cut down to make

  • this lumber, the forests all get planted again right away so they can repeat the process.

  • And, of course, as the trees are growing, they pull carbon out of the air and give us

  • oxygen. It's a win-win.

  • I'll get the supports for the particle board screwed in. Then I can start screwing down

  • the particle board itself. This stuff is pretty flimsy when it comes to screwing. I'm pre-drilling

  • my holes so that the pressure of the screw going through the wood doesn't blow out the

  • edges. It doesn't hold together as well as normal wood, or even OSB or MDF. I'll also

  • be countersinking the holes, just like we did on the table top so that the screws sit

  • flush with the surface. The nice thing about adding wheels is that if I want to raise or

  • lower the table an inch or two later on, I can just change the size of the casters.

  • And there we have it. The workbench is complete except for the casters on the bottom. It is

  • flat along the table saw and flat along the miter saw. Plenty of room for activities.

  • Now I'm going to flip it over and add 6 wheels on the bottom. The wheels can hold 1500 pounds

  • so no worries there about them being fragile. They'll be able to handle the workload just

  • fine.

  • [Drilling sounds]

  • Yeah maybe I went a bit overboard on the wheels, but they come in packs of 4. And there you

  • have it. A fully functional work station that fits my miter saw and my table saw with plenty

  • of room for storage. I'll probably add a power strip in the future to organize the cords

  • a bit better, but either way, it's way better than my previous table.

  • I'm pretty excited with how well it turned out, and it should last me for forever. Don't

  • forget about Team Trees. Even a few dollars goes a long way, especially when everyone

  • chips in. So do it now before you forget and let me know down in the comments if you donated.

  • Also let me know if you enjoyed this video. It's a bit different than my normal content

  • but I feel like it was pretty important. It's for a good cause. Come hang out with me on

  • Instagram and Twitter. And thanks a ton for watching. I'll see you around.

[Music]

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什麼是工程木?建造一個木工鋸臺!#TeamTrees (What is Enginered Wood? Building a Miter Saw Table! #TeamTrees)

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    林宜悉 發佈於 2021 年 01 月 14 日
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