Woodturning: How to Cut Logs for Turning
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- เผยแพร่เมื่อ 11 ก.ค. 2024
- thegeekgroup.org/ - Woodturning rockstar Ralph Lindholm walks us through the process of turning a log into a bowl -- it is so much more than just grabbing a log and putting it into a lathe. Different angles and parts of the tree yield significantly different results. Grain direction and pattern can also come into play. Even just choosing what part of the log to turn from can have a significant impact on the final product. Turns out, there can be a lot of math involved too!
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Mr. Lindholm, your presentation was one of the finest presentations of turning a log into a bowl that I've ever viewed! Your examples were excellent and you used them perfectly to demonstrate your statements...thanks ever so much for sharing your obvious wealth of turning experience... Safe turning to you always!
Excellent video! Not many videos so clearly demonstrate how a tree will yield the different characteristics of any given bowl. Thank you for taking the time to make and upload it.
Glad you enjoyed it!
Thank You Ralph. This is some simple, practical information that every bowl turner really needs.
Have to agree with previous comment NEVER use dry wall screws. Accident waiting to happen.
Presentation full of useful info for getting the most out of your wood. Thankyou.
Wow, I cant believe how much I just learned in 15 minutes. Thank you, thank you, thank you Geekgroup and Ralph Lindholm.
As always Ralph Lindolm has done a great job. Special thanks to staff at the Geek Group for another great video.
Its amazing how you thought of making it so you can pull the wood apart to show each stage at the start. Great intro btw.
13:00 They are still there!!! The best answer. Great presentation.
Great video, and very good information. The teacher is excellent, and obviously was well prepared. learned a lot.
An ABSOLUTE wealth of knowledge! Two thumbs up! Wow! Thanks for sharing.....Gus
I'm a complete newbe to wood turning, this video has helped my ever so much. Thank you for tha, I will look into purchesing the book.
Thanks for sharing... Great presentation and wonderful comments on each and every position of the slice of the wood! Thanks for clarify many questions about the many cuts of 'raw' wood... Safe turning to you and again, thanks for your VERY informative video!
That was very useful. It explained so much, a lot of the things mentioned covered what I have been thinking about for quite some time. I have some crotch pieces of yew and laburnum and haven't known what to do with them, for about 8 years. I also have about 6 small burls about 8-10 inches across, don't know what sort of wood they are but now I can have a go at them. Thank you.
The drawings 'on the log' were really useful - great video
Great speaker, great video, never thought that a bowl could be cut out of wood in so many direction. It really gives me something to think about.
Great video; full of great tips and extraordinarily informative. Thank you very much!
Fascinating! Thank you . 13:25 my favorite piece the way it is :-)
Excellent explanation on wood grain. So much useful information in such a short talk
Thank you! An interesting and informative addition to my growing knowledge of woodworking!
Loved this video was well put together and useful to beginners thanks Gus.
Extremely helpful video. We have recently began selling wood for turning and this helped make sense of a lot I have been told.
Excellent presentation!
clear, concise presentation full of advice on gaining the best from your logs. Many thanks for putting the vid together and posting it on here for our enjoyment ;-)
Thank you for a beautifully prepared presentation
Ralph says he uses drywall screws with face plates. I suggest using different screws, as drywall screws are brittle. If they break, catastrophe can result, including injury.
A very well thought out demo !
Very useful, no waste turning!!! Thanks!!!
What a fantastic presentation.
Excellent presentation! Thanks from a GnuBee woodturner and new subscriber.
Great informative video. thanks for sharing.
Very interesting. Can never get to much information from a good source. Thank you for sharing
aggre
Educational & enjoyable. Thanks
Really great video, thank you.
Very interesting and helpful,thank you for sharing info.
I was always told not to do end grain bowls due to the cracking of the pith. How do you avoid that when the wood dries?
Great information!!
Thank you, Ralph.
superb no nonsense talk thanks very much i learned a lot..
I love this project, it has been a real hit with woodworkers of al levels, thanks! BTW if you didn't know Hyezmar made his Woodworking Bible at no cost, he's just looking for feedback.
Thanks for the great video
Very useful, thanks!
that was awesome.
everybody is all worried about stuff and dude's like,'naw, nothing's a problem.'
'what about the holes?'...,'there still there.'..like it's the dumbest question ever. very good talk.
What a great video
Just Great!!!Bill.
Good presentation. The book he recommends "Turning Green Wood" by Michael O'Donnell is excellent. Of all the turning books I have I think this one is one of the best for cutting up and laying out your work.
cool class!
Hi Buddy, I got a lot out of watching your video. cheers. Desmond Shore
great video learned a lot on choosing my wood . getting ready to get a lathe. if the wife stops spending money saved for it
Thank you!
Nice presentation, and good information, but I feel compelled to add a safety note: Do not, under any circumstances, EVER use drywall screws for a faceplate. As in NEVER. Drywall screws are very brittle, and all their strength is in tension -- any significant side force, such as a bad catch or moving the toolrest into the spinning wood with a bump sticking out, and they will snap right off. Instead of drywall screws, use hardened ceramic deck screws, or even better, GRK fasteners or other hardened screws that have good sheer strength. It is never a good idea to use cheap screws where safety is concerned.
Absolutely agree. Using drywall screws is not safe practice.
Can confirm: I used drywall screws, 1 broke the other 3 bent dramatically all at once. Luckily I noticed the wobble and took it off before the lathe threw it at me
Thank you for pointing that out. For a couple of dollars, you can get a collection of screws. Get # 10 and # 12, and go for 1.25 and 1.5 inches.
How do you prevent the concentric-ringed bowl from splitting? I find it virtually impossible to stop the splitting if any of the pith is present in the cut bowl.
He really passed over the question about how well the bowl will dry with the pith in. What percentage of those bows actually make it through the drying process? I’m new to this craft and I am having a lot of issues turning green wood due to the drying distortions. Any ideas?
Nice!
Great presentation!
Great presentation and camera work. BUT. Using drywall screws is very dangerous they break not bend.
Fierceflyer55 Agreed
Straight and to the point ,I myself often wonder am I doing this right or what should I be doing but you show with this is that ,just do it ,take something like the crotch wood and make something of it where as I have overlooked them as something I consider firewood,great video .
only thing i heard that you shouldnt use is drywall screws there not really strong enough. for the torque that will be put on them .if you are goung to use a drywall screw use the laminator screw there thicker and there -15/8 long. but do have to say great video
Wondering if you have used unusual wood for turning, such as palm trees or fruit trees.
great except for the drywall screws. they snap easy because they are hardened and can cause some serious injury
I have a question sir, is the seasoning of green turned bowls the same in all directions? for example will the bowls all end up more or less oval equally or will some stay more round than others? Thank you Sir
+peter zazzi - If you imagine his bowl with the branches on - this will shrink in towards the heart wood 'almost' equally. The bowl from the left side (in his 'where to position it' slab) will distort the outer edge (most left) towards a flatter face. The top bowl will have a convex face to the open edge of the bowl, and may not sit flat, having a concave foot. The bottom bowl may have the reverse - a concave top, and convex foot. Check out the book he suggests, I have it, and it's good for explaining this sort of stuff!
unless you come across letherface then run away lol. great video
So, if you cut up a tree trunk (for example), how long do you have to wait before you can actually turn the wood...?
I am no expert, but having watched a number of videos on turning green wood it appears that you can turn them immediately. You turn the rough shape, leaving the bowl thick and then put it away to dry; this can take months or years. Once dry, you do the final turning and finishing.
+Zippy DoDah You can turn immediately as Leland says, but you (it is suggested you) leave 10% on wall thickness for drying / movement. Re-turn when dry - I don't, I just turn green to what I want, then let it move - move interesting shapes in bowl and goblets that way!
I agree! when wood checks it makes it even more organic looking, rather than manufactured.
Can someone tell me what he does to make it so after he is done with the bowl how he gets that end chuck piece off? Does he cut or turn it off? Cause I could imagine turning a bowl and trying to cut that off could end in disaster. Thanks guys
+ProD Miner I asked the same question at a wood show - use "Bowl jaws" - plates that fit INSTEAD of normal chuck jaws. They have rubber grommits that tighten onto the bowl edge (either in compression or expansion). There are videos on here on how to make your own - hope that helps.
Stodoys has a very large project base.
11:23 beatiful
Don't ever, ever, ever use dry screws to mount a blank on a face plate. Dry wall screws are very brittle and can brake and you have a blank flying thru the air like a missle. Don't ask me how I know this.
Great knowledge but Do Not Use Dry wall screws they are too brittle
Dido!
Dry wall screws should NEVER be used for mounting a faceplate. They are way way too brittle.
Woodglut has very good and accurate plans.
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