Shear Scraping

  Рет қаралды 30,512

Brian Havens

Brian Havens

8 жыл бұрын

See how, after trying with our best efforts with cutting tools and Conventional Scraping, Shear Scraping can discipline the most recalcitrant grain. It can leave a smooth, tear-out free finish on spalted wood, knots, and end-grain blowing out on side grain. Last but not least, it safely cleans up end grain in face work, making it ideal for refining the outside of bowl to minimize the need for sanding.
Cover Tool: Two-way "Shear" Scraper (reshaped from an Ashley Iles square end scraper)
Woods: Spalted European Birch; Camphor; Honduran Mahogany; Eastern Black Walnut; Japanese Tree Lilac
Apologies in advanced for some camera difficulties. Some shots are blurry and my overhead had some linseed oil in the lens case, making it look a little cloudy.

Пікірлер: 33
@thomasharder9582
@thomasharder9582 3 жыл бұрын
Great episode Brian!
@gdaruda
@gdaruda 8 жыл бұрын
Brian of all the how to vids on You Tube you are far and away the best on showing us how to do this stuff. I'm and old geezer pretty new to turning and I learn some thing good that's new every time I watch one of you vids. Thank you for your time explaining so well.
@MrDancampbell60
@MrDancampbell60 8 жыл бұрын
Yeah Brian, you're spot on again!I have noticed that some retailers and manufacturers are promoting the carbide scrapers and although these tools are somewhat useful, novice turners seem to get the idea that these tools will give them an acceptable finished result and they don't need to learn how to sharpen and grind traditional basic tools. I am all for getting people interested in turning but teaching people a method like this is like saying you can turn a museum piece with sandpaper. To me, mastering a craft is an ongoing effort and although it is sometimes tempting to go for the quick method, the quick method usually comes at a price that may not be apparent at the time.
@robohippy
@robohippy 8 жыл бұрын
Brian, I will have to check out more of your videos. As a self proclaimed scraper pyscho, this is well done. I like the use of straws for showing grain orientation. I compare the difference between a scraping cut and shear scrape or any shear cut to going over speed bumps in the parking lot. Hit it head on and you get a big bump. Hit it at a 45 degree angle and the bump smooths out a lot. I do prefer rounded noses to the straight ones for shear scraping, and drop the handle a bit so it is impossible to get above center on the tool and get a catch. Also, you can't shear scrape the inside of a bowl with a straight edge.
@cornwasher
@cornwasher 8 жыл бұрын
Another fantastic description of a tool and its uses. Thanks Brian.
@user-pm5bp1np8l
@user-pm5bp1np8l 22 күн бұрын
Too good!
@mauiharward7897
@mauiharward7897 4 жыл бұрын
I’m so glad I found your channel, it’s been of great value to a new turner like myself. Thanks for sharing.... great stuff🤙🏽
@Lee-qp6gf
@Lee-qp6gf 8 жыл бұрын
As always a great video on technique. I review these often. Thanks for making them.
@55dougie
@55dougie 8 жыл бұрын
thanks Brian ----- always enjoy your lessons..... thanks for putting them up.
@davidmorgan7522
@davidmorgan7522 8 жыл бұрын
Thanks Brian! Another good lesson. I'll have to give this a try and save on sandpaper. Take care, Dave
@terrytjaden1631
@terrytjaden1631 8 жыл бұрын
Very nice job!! Thanks for showing this technique.
@johnclucaswoodturner205
@johnclucaswoodturner205 8 жыл бұрын
Excellent job Brian
@raysmith1028
@raysmith1028 6 жыл бұрын
Thanks Brian this is an extremely educational tutorial much appreciated
@muziqjazz
@muziqjazz 8 жыл бұрын
Lesson learned my friend. Thanks again for sharing. Marc
@twonacor
@twonacor 8 жыл бұрын
This is a GREAT tutorial and explanation of the differences in shear scraping with different tools and techniques. Your attention to detail is unmatched! I had never thought to divide a traditional scraper into two cutting planes. I usually use a gouge for shear scraping and now I have another tool for my arsenal. Like Robohippy (thanks for your videos also Robbohippy) I use round nose scrapers when needed but this is another technique I think will be very useful for me. The visual affects that this technique has on difficult wood is very good. Excellent video! Thanks and subbed!
@alansimpson596
@alansimpson596 8 жыл бұрын
Another great video.
@icespeckledhens
@icespeckledhens 7 жыл бұрын
Thanks for the tutorial and I will give it a go James
@anch1994
@anch1994 8 жыл бұрын
"Lice night cut" I laughed more than I should :D
@gsilcoful
@gsilcoful 6 жыл бұрын
Thank you.
@gordroberts53
@gordroberts53 8 жыл бұрын
Really enjoyed the scraper series, learned a lot and now looking for a Canadian supplier of HSS to make some specialty scrapers. Double benefit. Cheers, Gord
@robertkutz
@robertkutz 8 жыл бұрын
nice video great tool work.
@Wood4turning
@Wood4turning 8 жыл бұрын
Great vidieo Thank you for great informative videos
@eachaval
@eachaval 8 жыл бұрын
Another great video. Very professional. Just got cbn wheels, they are putting a great burr on my scrapers... Just subscribed to your channel. Aloha
@RayShaw007
@RayShaw007 3 жыл бұрын
Just to say thanks for all your foundation vids. I find them good as 'originals' and as refreshers. We can always learn! Not only this, you have also helped resolve a mystery. I inherited an 'odd tool' when buying a bunch on line. Didn't know what it did, what it was called or how to use it. Took it to my local club, all the experts were none the wiser, one suggested it was a home made tool. it didn't look that way to me although thee was no manufacturers name visible. It's not a 3 point tool but I think it may be what you call a pyramid point tool and what others may describe as a shear spear! It's made from 1/2" stock with one facet only ground at about 20 degrees and a normal 'bevel' at 35 degrees. This making two bevel edges of about 3/8th" length. Am I right in thinkinng this is basically for shear scraping?
@RayShaw007
@RayShaw007 4 жыл бұрын
Excellent informative video. I assume that shear scraping the inside of a bowl or hollowed form operates with the same principles but you need a tool that's already angled for a 45 degree cut. This video has helped my understanding greatly, in particular about when and why not to use a scraper! Does a round nose negative rake scraper operate with similar principles, in effect with there being very little of the burr in contact with the material?And the half round stock design by for example, Tracy Owen?
@davidshaper5146
@davidshaper5146 6 жыл бұрын
Is it worth shear scraping or making finish cuts before you flip it around onto the chuck? Maybe I'm making lousy tenons and mortises and misaligning the work, but I rarely run dead-true once I'm on the chuck. I re-true and then make finish cuts and hollow.
@123HURST
@123HURST 8 жыл бұрын
The most fun you can have with a piece of wood is with a lathe.
@tmikeporter
@tmikeporter 8 жыл бұрын
Brian, I have an old skew that I'd like to try to grind into this configuration. Can you give me an approximate angle for the point and for the underside bevel. Looks like about 20 deg either side of the point and about 40 degrees on the bevel under. Thanks. Oh, and great use of the straws as a visual aid. I'll have to try that to help me read the wood as I work on it.
@BHavensWoodworker
@BHavensWoodworker 8 жыл бұрын
+Mike Porter Those angles are about right. The precise angles are not important. The angle either side of the tip needs to be enough to keep the top half of the burr away from the work, and to provide a comfortable handle angle for drawing the tool towards one's self. I use 40 degrees for the bevel because that is what my grinder platform is set at, but I lift the handle on the last pass, just barely skimming the edge on the grinding wheel, to create a small micro bevel. I find doing this creates a really good burr. (You can experiment with the angle of the micro bevel to see what works well.)
@tmikeporter
@tmikeporter 8 жыл бұрын
Thanks so much. Will give it a go.
@dougrobins8291
@dougrobins8291 8 жыл бұрын
When roughing out a green wood bowl, I don't worry about tear outs because they can be dealt with in the second turning after the blank dries. But...would shear scraping on green wood have any benefits during the second turning?
@BHavensWoodworker
@BHavensWoodworker 8 жыл бұрын
+Doug Robins I don't worry about tear out on roughed-out green bowls, since it will all be cut away on the second turing. The only reason I can think of to shear scrape on the green wood on the first turning is for practice.
@jamesguenther7575
@jamesguenther7575 4 жыл бұрын
Is it possible to use a lathe while being in a wheelchair.
Negative Rake Scraping
28:21
Brian Havens
Рет қаралды 87 М.
(Conventional) Scraping
30:37
Brian Havens
Рет қаралды 47 М.
孩子多的烦恼?#火影忍者 #家庭 #佐助
00:31
火影忍者一家
Рет қаралды 51 МЛН
ПРОВЕРИЛ АРБУЗЫ #shorts
00:34
Паша Осадчий
Рет қаралды 1,3 МЛН
President's Challenge, Sept. 2015
30:09
Brian Havens
Рет қаралды 11 М.
Against the Grain
17:51
Brian Havens
Рет қаралды 15 М.
Scraping with Gouges
17:15
Brian Havens
Рет қаралды 7 М.
Richard Raffan on shear scrapers for woodturning
11:04
Richard Raffan
Рет қаралды 37 М.
Skew Grinds
31:01
Brian Havens
Рет қаралды 273 М.
Dissecting a Tree
15:08
Brian Havens
Рет қаралды 36 М.
Cutting Curves
20:17
Brian Havens
Рет қаралды 15 М.
孩子多的烦恼?#火影忍者 #家庭 #佐助
00:31
火影忍者一家
Рет қаралды 51 МЛН