Wood as Building Material - Prerequisite Course #03: Tension, drying, movement
Тәжірибелік нұсқаулар және стиль
The main material we use can still frustrate and confuse even after years of use. So understanding some basics at the start will alleviate one obstacle to learning the craft.
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Additional Content on Wood for woodworking.
Dimensioning Wood: • Stock Prep & Dimension...
Tree Butchery: • Tree Butchery
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Teachers Notes No. 3 - Wood:
- • Teachers Notes No. 3 -...
- open questioning
- props
- vocabulary terms (Contributions and corrections are welcome for terms utilized in this video.)
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Prompts:
- biology: tree cell structures, different cells, cell shapes
- history: how did they get building material for things like cabinets and homes in middle ages (hint: not much different than today)
- science: make a hygrometer from strips of different species of wood which will move differently
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Vocabulary:
homogeneous - the same throughout
reaction wood - wood that grew under stress or load so that as material is removed so is force holding it in a shape.
late growth - a trees growth during dormancy
early growth - a trees growth during the growing season (spring, summer)
lathe - woodworking tool that spins the material so blades can be presented to it to accomplish work.
table saw - woodworking tool where material is passed over a round spinning blade. used to cut straight lines.
fence - a brace to move work against to create a consistent cut.
riving knife - safety device on a table saw that prevents wood from pinching on the back of the blade that also travels up and down and maintains a consistent distance from the blade during that movement.
hard wood - dicot, angiosperms trees, generally broad leaf with a dormant cycle (deciduous). have a more complex cell structure than softwoods.
soft wood - wood from a gymnosperm tree like pines. many are evergreen with needles for leaves. simpler cell structure than hardwoods. "soft" does not refer to the hardness of wood as many are harder than "hardwoods".
knot - scar from branch amputation.
free water - water not bound in a cell
bound water - water that has entered a cells structure through osmosis.
growth ring - annual ring in wood created by the difference between late and early growth hence one ring per year of growth or growth cycle.
Kiln Dried - artificial drying method where heat, moisture control, vacuums or a combination are used to extract the bound water from a trees cells until it reaches equilibrium with the air.
Air Dried - natural method of drying wood that utilizes time to evaporate the water from cells through osmosis.
Cookie - cross section of a tree trunk
rift sawn - board sawn so that the growth rings cross it at +/- 45 degrees
flat sawn - board sawn so that the growth rings are parallel with the width of the board.
quarter sawn - board sawn so that the growth rings are perpendicular with the width of the board.
frame and panel - method of construction to capture the movement of wood and create a stable shape.
sheet goods - man made wood products used in construction and woodworking of a consistent dimension design to be stable.
plywood - a sheet good where woods are layered in stacks perpendicular to each other then bonded with glue, heat and pressure.
osb - a sheet good made of shredded wood layered in such a way to create a stable mat that is then compressed with heat, pressure and glue.
mdf - sheet good make of sawdust, heat, pressure and glue.
lingnum - latin for wood
rip cut - cutting wood along the length of a trees growth
cross cut - cutting wood across it's growth rings or perpendicular to it's growth.
split
Пікірлер: 118
I don't know how in the world you're able to make 30 to 40 minute videos filled with so much information while still keeping my attention. I've seen people talk about wood moving with moisture but never saw anything so clear about the how and why of it. Thank you.
This is possibly the most eye opening woodworking video I’ve ever seen! Thank you!
@wortheffort
4 жыл бұрын
Thanks
These wood working videos are worth while
As a new wannabe woodworker, I'm not sure I can express how lucky I feel that I found your channel. The amount of knowledge that you offer for free is simply astonishing. You are a great educator. Nothing pretentious, just good information covering a topic in depth without trying to dumb it down. It's just amazing thank you for everything.
As someone starting out in woodworking this series has been so informative! At first I considered skipping this prerequisite course just so that I can get straight into the woodworking, but I decided why not check it out? This has been amazing and I’m learning so much! I never understood why the doors in my house fit different season to season (they’re cheap ones) but this explains a lot on how the wood behaves. Thank you so much!
Still watching but needed to comment asap ... wonderful content and easy to understand ... I’m a wanna be woodworker [65 years young and about to retire] and considering my first table saw. I love to learn and to teach ... I’ve now seen a number of your videos ... GREAT & Thank you very much!
@wortheffort
4 жыл бұрын
Thanks
Thank you SO much, this was the best explanation about wood grain I've seen
Man... I've learned more about wood with this video than all the hundreds of hours I spent on youtube before put together, thank you so much. I just wish there was a channel like this in spanish (I still struggle a lot with the vocabulary, cause many tools I still haven't found their right names in spanish and stuff like that, most I only know the names in englsih and they can be very very different). You, Paul Sellers (obviously) and Rex Krueger are my no doubt top three here. Thanks again.
Wow! this video is a great explanation of how wood moves I finally understand this. You are great teacher, love these videos thank you so much!
@wortheffort
4 жыл бұрын
Thanks
Just learned about you from my youngest son. Awsome content, thanks for the excellent information. And presenting it in an interesting and for me easy to learn fashion.
You are a natural teacher. I really appreciate your sharing your knowledge! I'm using your classes on here to get started with woodworking and loving that I've found such a thorough explanation of everything I need to know. It can be frustrating trying to put all the information together from a bunch of different sources.
@wortheffort
3 жыл бұрын
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As O believe I already said you, I!m a naval architect/wooden boat builder that for the last 20 years has been studying the wood type's and their characteristics for applying in boat construction. I couldn't have explained it better, sorry actually I couldn't have explained it as simply and clearly. Great video on understanding wood, is uses and limitations.
@wortheffort
4 жыл бұрын
Thanks
Great tutorial! I forgot what I used to know! Some parts of this video, I went back and played it again, just to absorb this cranial knowledge! I loved the comparison of zombies to tree trunks! This is, as they say now, “DOPE”! 👍👍👍💖
So incredibly informative. Why do not more woodworkers explain or cover this? Just amazing...
Fascinating stuff. Thank you.
I now understand why all the pressure treated posts cracked within a year of the fence being built. The moisture evaporated and the wood cracked. I later installed a steel gatepost adjacent to each of the 4x4 pressure treated posts. This year I will rehang the wooden gates with steel gate posts. Overkill for sure, but the posts won't crack and warp. Thank you!
Thank you for starting this series! I really need it and have learned a lot already. I watched your Tips #66 video a while ago and had never seen this type of information anywhere else. I watched it again a few weeks later to understand it better. Very good information to help us succeed with our projects.
@wortheffort
4 жыл бұрын
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Great video! Love the zombies analogy. Packed with information. Thanks for sharing. Can’t wait for the next video👍
@wortheffort
4 жыл бұрын
Thanks
This is the most informative and educational video that I’ve watched about wood working. Excellent presentation!!! Thank you.
Shawn, excellent as always. You are a treasure to the woodworking community.
This was a GREAT and informative video. Never really thought about just how much wood can change when working and over time with changes in temp and humidity.
Shawn, I love that you continue to take me to school. In fact, it's your turning videos that got me started with turning (and ultimately starting a small business). You're still one of two turners on YT that enabled me to truly understand my "first cuts" on the lathe. (the other hasn't been active for almost 6 years)
@wortheffort
4 жыл бұрын
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Great stuff!! Keep those videos rolling, please. Waiting for the next one....
@wortheffort
4 жыл бұрын
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This is the best explanation of the nature of wood.
@wortheffort
4 жыл бұрын
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Great video, awesome lessons!!! Keep on teaching, my friend! Very, very informative.
@wortheffort
4 жыл бұрын
Thanks
Your knowledge, passion, and attitude toward learning and teaching has instantly made you one of my favourite channels on KZread. I just want to say from one man to another, thank you. I appreciate what you're doing here. Over the last 3 videos in this series I have been locked to the screen the entire time. Your excitement for your craft shows through in the videos and is definitely part of the reason you are going to be very successful in this endeavor. I'm glad you have found some value in posting your videos here, because the amount of value I have taken away from them already is irreplaceable. Keep answering questions I never knew I had. Thank you so much.
@wortheffort
4 жыл бұрын
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Awe wow-the light bulb came on. Very understandable presentation.
makes a lot of sense. zombies - love it!
Another good vid in your series. As I get back into the fundamentals and science of this craft after many years away, it’s good to get information like this. Thanks for sharing.
@wortheffort
4 жыл бұрын
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Your Dad can be real proud of you. Another great tutorial. Thank you and keep safe.
@wortheffort
4 жыл бұрын
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What a great teacher
Thank you so much for this video. I'm learning a lot, and you're very good at explaining the subject.
@wortheffort
4 жыл бұрын
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I’m so happy that I have found your channel, these videos are so well constructed as an educational resource even for someone who is not interested in woodworking.
@wortheffort
4 жыл бұрын
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Good stuff, like all your videos! Thank you.
@wortheffort
4 жыл бұрын
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Excellent presention . There is a great interview with Richard Feynman in which he answers the question “where do trees come from?” Feynman was a brilliant physicist, a true eccentric, and a superb storyteller and explainer. Track the video down, it is worth it.
It was nice to see this all put together in one video . Nice thanks
@wortheffort
4 жыл бұрын
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Fantastic! I don't know what this style of learning/teaching is, but it works for me!
@wortheffort
4 жыл бұрын
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@TheMassAnnoyance
4 жыл бұрын
@@1DrBar Whenever I'm taught how to do something, very rarely does the person teaching show WHY it's done that way and what happens or can happen when you don't. Shawn does!
"As tree morticians, we must learn to control our zombies...." - Great line! I am not sure it applies to wood, but wouldn't the converse to radially be tangentially?
Wahoo, that was one of the most educated video and deeply explained on wood i have ever heard!!! In all other video they talked in most general way terms with out explanation that i really understand. Keep on teaching and i hope that i will absorb more to better wood worker( for now it's a hobby but in the future....) . Take care, be safe and stay sharp!!!
@wortheffort
4 жыл бұрын
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Great information, thank you! Very informative video.
@wortheffort
4 жыл бұрын
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A wonderful video. It gave me a new vision. Thanks a lot
@wortheffort
4 жыл бұрын
Thanks
I watch a fair few wood working video's, most of the other ones charge money for their knowledge, you are running the first free course I have seen, you obviously care about the ordinary wood worker because you don't charge or advertise for your knowledge. This I appreciate very much. so stay safe and enjoy yourself. kindest regards Bill (Australia)
@wortheffort
4 жыл бұрын
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Well said, sir. Have enjoyed your channel for some time and the lessons are worth the effort to watch repeated times.
@wortheffort
4 жыл бұрын
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Good stuff, I'm not a newbie to woodworking but this brings you back to the basics. Always important to understand, and not to forget the fundamentals. I'm a big fan, Shawn! Oh and I'm enjoying beating with my Orange Osage mallet. Yeah could've turned it myself but please support this guy!
@wortheffort
4 жыл бұрын
Thanks
Thanks for the video. Very informative. With the woodworking I do, I use the stuff no one else wants. Scrap, junk, hollowed logs, etc. The more I save from the burn pile or landfill, the better.
@wortheffort
4 жыл бұрын
Thanks, Ya I covered that stuff in a video called "Wood Butchery".
Tree morticians! :) Thank you for this video.
Anyone who can invoke George Romero in an educational context is a true master in my book.
thanks
Wow! I am starting out in woodworking (working up to make weaving looms) and I have always shied away from sheet goods, osb and mdf. Maybe using sheet good might be a very good option, as I do not want to loose the right angles I have everywhere. Thanks so much.
Great teacher
@wortheffort
4 жыл бұрын
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AWSUM series....
@wortheffort
4 жыл бұрын
Thanks
I learned the hard way about wood movement. my first finger joint project, I got 3 sides of a box done, working on my last side, already did the detail work and just finishing the last fingers (it was easier to do it that way). Didn't notice on the last 2 fingers, me trimming the edge with the fingers allowed the whole board to split. So me trimming the last fingers, they where out of alignment. Cursed, yelled and threw that board clean across my shop and got a beer.
@wortheffort
4 жыл бұрын
stuff happens
I'm now worried that my table is going to attack me for my brains. Nightmares beckon.
This is why your house creeks when the tempreture changes.
ZOMBIES! Class video as ever, totally unique style and approach! Keep them coming dude!
@wortheffort
4 жыл бұрын
Thanks
Zombies?! what are yall smoking down there in the hill country?? lol great video!!
@wortheffort
4 жыл бұрын
Thanks
I think you also need to touch on upgrade lumber which is also used in a lot of wood applications.
Great video. Now, I'm not sure I can sleep tonight. I'm surrounded by ZOMBIES!!
Everything I know about woodworking I learned from Lucio Fulci.
I have been dabbling in home woodworking since high school wood shop (about 55 years ago). I am enjoying your prerequisite series. We never stop learning. I love your zombies analogy.
Hmm, so if you had fresh lumber laying at a small incline with a gutter bellow it you could reroute the water back into the fields to nourish new growth saplings. I.E Field 1 new cut field, field 2 last cut field pile the lumber, field 3 previous lumber field now empty with new saplings planted or a different wood. Each plant has its own chemicals biologically produced and broken down from the wood and the sap, might as well rotate them and make use of the waste to make good soil with ground water.
THANKS fro taking the time to make this video! I was just given some trees that where pushed down to make way for some new business. The largest is about a Siberian elem that is 36" to 48" wide at the base. and it is straight for 12 feet. there is also hack berry mulberry and walnut. But they are in the 24" range at the base. I want to buck them up into logs that a saw mill can handle. Then I will be air drying in the hay now above my shop. I was going to cut right at the rot ball but now I know that that wood may move on me. I am also going cut back a bit from the Y's to avoid that wood that may move. But from watching your other videos I will be saving the Y's for bowl blanks. the fist Y on the Siberian Elm is massive large. Do you have any suggestions on projects for a Y that is at least 24 inch before it starts to branch out? THANKS for taking time out of you day to make these very good woodworking videos ! ! Even though I have been doing amateur woodworking for almost 50 years I still learn some thing from you every video . THANKS Again Dan H
@wortheffort
4 жыл бұрын
Thanks. Sectioning them for bowls or door panels is what I'd do. Make sure you seal them up as they crack fast.
"Trees are zombies in your furniture" 🤣
It would be pointless tell you that you are born to teach, so I will not tell you. I will ask you, instead, a silly question that I was thinking about this days: how can I tell which part of a board is pointing toward the roots or towards the branches of the original tree? As always, thank you for sharing this.
@wortheffort
4 жыл бұрын
taper and if you develop it, feel.
So if you identify something as branching wood, is it important to use non power tools?
The points you’re making at 5:15 onwards, I don’t understand- there must be a lot less tension in that wood, it’s already been cut from the tree. That’s a really interesting question; how much tension is in a branch, recently cut from a tree, that 20 minutes ago was supporting hundreds of pounds seven or 8 feet from it’s center? Thousands of pounds of torque, and within an hour it could be on your bandsaw. Do we have a tool that could measure that wood’s “momentum”?
@wortheffort
2 жыл бұрын
Tension is inbetween the cells. You cut a branch off doesn’t change tension in between cells still present.
Zombies...never thought about wood that way...making me laugh...a lot....THANK YOU
@wortheffort
4 жыл бұрын
Thanks
I unliked your vid just so i could like it again.
As I was watching this I've been sorting mahogany pieces that just arrived for ukuleles. I've cut down my own trees and and bought logs and watched the guy 1/4 saw them for me. I dried the lumber in my upper apartment. I steam bent some ash for snowshoes. I was really enjoying this but now I don't know if I can sleep with all of these zombies around me.
wood worker video, trees only things in focus.
@wortheffort
4 жыл бұрын
Yes, the subject of this video was the material we build with.
I think YT has struck and the sound is out of sync with the video
@wortheffort
4 жыл бұрын
Haven't heard this from anyone else. Might be on your end.
Romero has proven...!
@wortheffort
4 жыл бұрын
yep, it's science.
@stephanieray6587
4 жыл бұрын
@@wortheffort Should have been Shawn of The Dead.
“…and all the wood comes up underneath it…” Sincerely - I don’t understand what this means
Hmmm . . . Native American?
@wortheffort
4 жыл бұрын
scottish viking
It's interesting that you use the word 'designed' regarding the tree, and you go on to say their design was 'only' to absorb carbon from the atmosphere, sunlight, and water'. You stated that they were never designed to be a building material.. I believe in God, the creator, and so I am in agreement with you when you use the word, 'designed'. The evolutionist can not, and does not use the word design because they don't accept that there was ever a 'designer'.. that would infer that ID is true... However my point is this.. If trees were designed by God, and God also created man, and is Omniscient, how do we know that God didn't have building in mind when He designed the tree? When God designed food crops, He had feeding man and animals in mind, didn't He? My point? I think it's a bit arbitrary for us to say a tree is designed to absorb Co2, turn the carbon into it's physical substance, and release the O2 back into the atmosphere, and then say it wasn't designed to be building material.. Not important, not meaning to pick nits, just making a point about design, and what a being that can design and create the world and the life in it would have been capable of.
@wortheffort
4 жыл бұрын
Dude, you're reading way to into my meaning. Not that deep.
@fredflintstone8048
4 жыл бұрын
@@wortheffort I'm merely pointing out that it's better to think about what we say rather than not.