President's Challenge, Sept. 2015
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- เผยแพร่เมื่อ 13 ก.ย. 2015
- I have been looking forward to this challenge all year, because it is an opportunity to share some of my methods and tips that I use to turn, dry, and re-turn bowls from green wood. Most of all I want to show two things: First, the "pivot" cut that I use to round blanks roughed out with a chainsaw, allowing one to bypass the bandsaw (either by preference or because some turners may not have a bandsaw.) Second is my use of alcohol soaking to dry bowl blanks in about one eighth of the normal time. As well, I show an additional re-mounting method that you can add to your repertoire.
Cover tool: "Green bowl gouge" (Actually a 40/40 grind but with the left wing swept back, and an extra long maple handle.)
Woods: Ash; Callery Pear
This is one of my new favorite videos! I REALLY like the multi-camera format, and the editing and comments made this a simply excellent video. Thank you so much Brian.
Brian, your videos continue to be the best out there. Keep up the great work. Each one is slicker than the last.
Very nice job. Thanks for passing along your wisdom.
your videos are very helpful . I do wood turning and enjoy your work .
Thanks for the video, i Am a big fan from Denmark, look forwards to your next video
Ben I Learn More From Your Vidios Than Any Where On TH-cam So Keep Up The Good Job Steve
thanks for a great video. You do a super job I look forward to your videos.
I also thank you for this video. Being a new kid on the block to woodturning, (2 yrs) , this is great.
Thanks for that trick with the internal chucking. I would not even have thought of it.
As always very informative
Thanks for a great and thorough presentation! I have really learned a lot here. Never tried the alcohol method before but now I will.
Thanks for the video, lots of good info on drying
Great video. Interesting drying method.
as always, enjoyed very much
Brian, as always a great instructional video. This video has something for everyone.
Thanks,
Lee
Thanks for sharing,i always find your videos intresting,keep em coming!
Awesome videos Brian, super helpful for beginning turners. One thing I wanted to bring up is that denatured alcohol contains methanol which is very easily absorbed by the skin. If you are working with it a lot you should really try your best to wear gloves when handling it. Methanol poisoning is no joke.
Thanks Brian, It seems as though I will be really limited since logs are not typically balanced. Perhaps I could make it partially round with my bandsaw and then put it on the lathe. Do you know of a way to slow the lathe speed down? The Grizzly lathe that I use has a bully system that uses double plates that squeeze tother. This alternating size slows and speeds the lathe. Thank you!
GREAT VIDEO...!!
I learned A LOT from this vid...THANK YOU..!!
Thanks again for sharing. Marc
great video. I wish there were clubs in my area of calif. (palmdale) . I learned a lot from this video.thank you
Brian, great tutorials, I just recently discovered your video series and have already learnt a lot from this. Thanks for sharing your expertise and knowledge! One question here with respect to roughing out a bowl in green wood...with a deep natural edge bowl...how can you refit that to the lathe to finish it after curing? Haven't found a good solution for this yet and I'd appreciate your thoughts!
Thanks Brian, I have a lot of green wood and use the alcohol method with good results
Great video, very interesting!!Cheers.Mauro
Brian, Thanks for posting very interesting videos. I was wondering if putting a hose clamp around the work at the rim during soaking would help with warping. What do you think. New to turning????????
I really appreciate your articulate instructions! I have a Grizzly lathe and I want to start making bowls. The slowest speed is 600 RPM's. What is the safest way to make bowls on this lathe considering its slowest speed?
Thanks for any help!
+melanieheinrich The general recommendation for lathe speed is that the diameter of the work times the RPM should be from 6000 to 9000, so you could go up to 15"-if the work is balanced! What you have to be really careful of with the low-end speed being so high is unbalanced work. If the work is really out of balance it is apparent even when spinning the work by hand. Apart from that, I would suggest always standing to the side when turing on the lathe at 600, and keep your finger on the off button so that you can turn the lathe off before it starts dancing.
+Brian Havens Check the speeds! I don't any lathe that will turn at 6000-9000.
+texanky 6000 - 9000 is just the reference. 8" bowl x 1000 rpm = 8000 , so that would be safe
Thank you Brian. I have been using the alcohol bath (completely submerged) method of drying seven Bradford Pear bowls (about 8" diameter). I let them soak for 24 hours, but four of the seven have cracked within a week of removing from the alcohol (the remaining three are still in process). Would leaving them in the alcohol longer help? I use the 10% of the diameter rule for wall and base thickness. Would using green wood sealer rather than kraft paper on the outside be worth a try. I leave them on one inch stickers, rim-down/base-up, on a table in the garage after applying kraft paper to the outside. The alcohol method doesn't seem to work for me. Any idea of what I am doing wrong? This is my first attempt at doing green bowls. Thank you for your many woodturning videos.
Sounds like you are doing it exactly as I do, so I am at a loss as to what is going wrong. I have used green wood sealer instead of paper (on the back and the rim), and it worked well. I would not expect soaking it longer in alcohol would change anything. What is the humidity in your area? It is dry here in California, and it does seem that it is better for the blank to dry quickly (as counterintuitive as that seems.)
For those in the UK: DNA = Meths or a more recent (and slightly cheaper) alternative, bio ethanol (just check it's the 96% one).
Thanks for pointing out the difference in terminology. I was unaware (but not surprised) that the nomenclature was different on the other side of the pond. ;-)