Identifying Bowl Gouge Grinds with Sam Angelo

[@braytonbailey3782]

Thanks Sam, as always great video. I am going over all my lathe tools and checking each one for proper sharpening.

[@martinwest2722]

“5/8 inch bowl gouge. That’s what i am going to hone in on”. You’re a funny guy! Good video!

[@matthewwright57]

I like parabolic flutes in my 5/8" gouge, but I like the v-flute in my 1/2" gouge.

[@josephwise485]

I have heard turners say they have a 60 degree grind for inside a bowl. Never knew it was a conventional grind. Your picture helped me. Also on how to grind it. Right now mine has a fingernail grind. Thanks Sam.

[@nickkropat8857]

Thank you for this video. As a new-ish turner, I try to absorb as much experienced teaching as I can. With only 2 gouges currently, its tough to experiment with changing grinds as I don't want to waste my tool steel regrinding so info like this is invaluable to me. Thank you again

[@WYOMINGWOODTURNER]

I will add more or respond in the June Notes from the turning shop Sam

[@larryyancey6443]

Sam, Thanks so much for the super informative video. I'm relatively new to wood turning and still trying to master the bowl gouge. Sometimes I feel like I'm making progress and then the next day I feel as if I have forgotten any progress I have made. Your videos have been very helpful Thanks again

[@argyles65]

Thanks Sam. Great video. Grinds and flutes are confusing issues but very important for us to understand. Your explanation helps.

[@eddieagha5851]

And, of course, to add to the terminology Richard Raffan has an asymmetric grind on both his bowl and spindle gouges! Good video Sam!

[@glencrandall7051]

Some good information here Sam. I think you did well considering your time constraints. This is a very difficult subject due to the various terminology's in use by different turners. Also there are different methodology's for sharpening each grind. And on top of those considerations there are secondary bevels used by some turners. I think this is a subject that needs at least an hour to cover thoroughly. Thank you for sharing.

[@WYOMINGWOODTURNER]

I will add more or respond in the June Notes from the turning shop Sam

[@kenjenkins7184]

Sam, this was very helpful. Thanks for addressing some of the basic questions new turners have.

[@johngrace199]

Great video Sam...gouge and grind angles, the debate that never ends. Whenever the question of which style grind or bevel angle is best I always respond with 'the one that works best for you'.

[@tick_magnetedschaper5611]

Ok, so I started. You just might be the reason. I learned a ton from this video. Thanks!

[@RickerD]

Fantastic video, especially the close up, detailed explanation of how to achieve the grinds. I don't have one of those fancy sharpening jigs, so I really appreciated that detail in your video.

[@steveblight2120]

Hi Sam -- love your videos and your work. I have a Henry Taylor 1/2 inch bowl gouge with a U-shaped flute -- so neither V shaped nor parabolic. I have a lot of trouble getting a good swept-back grind on it that has clean edges on the wings -- they become uneven and kind of ragged when grinding. I have long wondered if U-shaped flute gouges are really meant for the conventional, straight across grind, so the issue may not be my grinding technique. I have another parabolic gouge that I have no trouble getting a nice swept back grind on. Any thoughts?

[@NolanTyrrell]

The first shape you held up was elliptical. Parabolas keep getting wider albeit tending to a line. y=axsquared plus bx plus c Ellipses are closed shapes. csquared= axsquared plus bysquared. Not massively different when truncated but one is not the other.

[@WYOMINGWOODTURNER]

Nolan, I will try to be delicate in responding to this. I think any woodturner will understand what I said or meant I have heard both of these terms used when used to describe a flute that WAS NOT part of a circle (spindle gouge) and NOT a V shaped flute. There is always someone out there watching my video or others who know more tan I do. I am one guy. But if I get 10,000 views on a video-there are many people out there who know much more than I do, especially when it comes to math. But you are apparently very smart when it comes to math. So I am sure you can understand what I meant. I would love to get some other comments on this. Maybe I am just being too simple. But this video was to explain gouges, flutes, and recognizing certain grinds. So I hope I succeeded on that. Sam

[@WYOMINGWOODTURNER]

Nolan, I had to get back to you and admit my total ignorance shown in my response to your comment. I did a bit of research and found that there is a difference between an ellipse and a parabola. It is a fairly important and significant difference. If I am to ever talk about flutes and their shapes in the future, I need to know this and report it accurately. I thank you for the correction..... I am not too old to learn something-thanks Sam

[@NolanTyrrell]

@@WYOMINGWOODTURNER I continue to learn from you Sam. I most definitely know how much of a smartarse I can be. Thank you for getting back to me.

[@robertmiles388]

Sam thanks for this video it really helped me a whole lot your explanation on how to grind and how to tell the difference I enjoy your videos

[@billy19461]

Really appreciate this video! Answers a lot of questions. Sometimes when the turners that make videos I find it very hard to see where the flute is ( or how the tool is rotated). I wish sometime you all would color the flute so that it would be easier to see. It may just be me and my old eyes. Thanks again Sam!

[@WYOMINGWOODTURNER]

That is a good idea. I know Glenn Lucas does that. Sam

[@ronbeckhaus7326]

Good, clear info, Sam. Thanks.

[@davidmorgan7522]

Thanks Sam! Some great info! Take care, Dave

[@WYOMINGWOODTURNER]

Hi Dave, I always appreciate you being there. Sam

[@loujacobs9291]

I think the description of a parabolic flute could be quite a bit simpler. As you said, you went around the barn... otherwise a nice, if a bit scattered video.

[@dtork47]

Hi Sam, appreciate your video as always. I think a hands on instruction is what I need! Have watched multiple videos about sharpening with the wolverine yet I still have problems with to pointy face bevels and low spots in my wing bevels? Thanks

[@WYOMINGWOODTURNER]

When your nose angle is too pointy-just spend a little more time on just the point or nose. The pointy nose angle happens when you grind one wing and then grind the other wing. When grinding a wing, just go past the nose a bit and do this from both wings. Sam

[@dtork47]

WYOMINGWOODTURNER Thanks a bunch Sam, I will try and correct that!

[@billk.5891]

Thanks Sam, from Idaho...

[@tick_magnetedschaper5611]

I'm not a turner but I find your videos very entertaining. You do a great job explaining things. I just might start. Who knows?

[@dyngbld]

Thanks. I didn't have a clue I just grab what tool "works" for the job I am doing. I have no idea what grind I have on any of my tools. I use a round scrapper for just about everything.

[@WYOMINGWOODTURNER]

I will add more or respond in the June Notes from the turning shop Sam

[@jimvorheis1137]

Excellent video!

[@DuaneTheOakHirst]

Another great video thanks much needed

[@tomcoker9882]

Thanks Sam. My question is about flutes. I have a very old Buck bowl gouge (1/2”) that has a “V” flute with slight wings, it works guide well (~55 degree grind), a couple of various “U” and Parabolic flute gouges from various makers and with various grind angles. I haven’t notice one flute shape being better than another on Tools with similar grinds. Where does the flute shape come into affecting the cutting effectiveness of the tool. What am I missing. BTW I’m just trying to get into utilizing traditional tools over scrapers and carbide tools (Easy Wood Tools ❤️). Help! Thanks. Stay safe and well so you can keep the nice informative videos coming. Maybe I’ll learn something. Cheers, Tom

[@WYOMINGWOODTURNER]

I will try to make this short-and simple. The flute directly results in the profile of the cutting edge. A V shaped flute does not "grind" well or it does not result in a cutting edge that is amenable to effective cutting. Sam

[@tomcoker9882]

WYOMINGWOODTURNER Sam, I was just wondering as I was looking into upgrading some of my old starter of inexpensive (Made in China) HSS tools to some new high quality US made tools. I’m considering Thompson and Carter and Son. However, all Carter and Son Toolworks bowl gouges have “V” flutes except for their special “Mahoney Parabolic Wood Beater” a 3/4” bowl gouge with a shallow parabolic flute. Then, except for that one, I guess the Thompson tools will be a better choice. Thanks for the info. Cheers, Tom

[@carolriley8472]

Good info on grinds!

[@recycle343]

I am forwarding this to my chapter "Twin state wood turners" . We are using Zoom for our meetings with demo's. love this video.

[@WYOMINGWOODTURNER]

Tom thanks a lot. I am working on being a Live remote demonstrator. Where is your club located?

[@BradsWorkbench]

Thanks. Id love to read that article. Does it happen to be online as well?

[@WYOMINGWOODTURNER]

It is available in the American Woodturner magazine and the online AAW Fundamentals magazine only. Sam

[@philwarnement5315]

Hey Sam, If you are looking for a good example of a parabolic curve, look at one half of the McDonald's arches.

[@WYOMINGWOODTURNER]

Cool..

[@violetradmacher-willis7492]

Sam, thanks for this video. I've watched a lot of great videos on grinds and sharpening, but always walk away saying "well, every turner says they like one grind or another. But WHY? Can you please do a video showing the differences?" So maybe you do a similar cut on a bowl, but with three different kinds of grinds, and explain why you like one over another?

[@WYOMINGWOODTURNER]

Violet, I can see where this would be really confusing. At this time I am not sure about doing such a video. I have touched upon this topic in many of my videos. I do think there are good videos out there from me or other you tubers.....let me think on that. Sam

[@PHIL_S]

Just read your article in this month's copy of the AAW magazine - great info about thread chasing - that and your videos will help my next skill to tackle

[@WYOMINGWOODTURNER]

Thanks a lot. Sam

[@mountainviewturning5319]

Great video 👍

[@mitchellmanning7887]

Thanks for sharing,, very informative,,🐝 safe

[@billbrookes8717]

Isn't what you called a traditional grind also called a "bottom feeder"? Great for cleaning up that stubborn end grain a the bottom of a bowl.

[@WYOMINGWOODTURNER]

Yes I agree. To me, a traditional grind does not have swept back wings. And it is sharpened in a certain way (did I cover that in the video)? But the nose angle may vary a little bit. On a bottom feeder the nose angle is usually very short and is 60 to 65º or even more shallow. My traditional grinds do have this kind of an angle. Sam

[@MD-en3zm]

Is fingernail synonymous with swept back?

[@WYOMINGWOODTURNER]

Yes that is part of it. Plus the radius on the nose. Sam

[@MD-en3zm]

@@WYOMINGWOODTURNER Thanks Sam.

[@suzetteedwards7956]

Great clarification Sam. Appreciate it. Beware of dog?? 🤣🤣 Read your chasing thread article in the American Woodturner this month. Great article.

[@WYOMINGWOODTURNER]

Thanks very much. Sam

[@ernestboatwright7172]

Thanks

[@NolanTyrrell]

You show an ellipse on the screen and say that it is a parabolic design. geometrically speaking it is not. It is elliptical. A parabola is not a closed shape. The ends never meet. In a parabola you are discussing the y=x squared formula. The ellipse from memory is y squared + x squared = 1. They are fundamentally different shapes. Now perhaps you will go on to qualify this Sam but please don't begin with an inaccuracy because I think ellipse vs parabolic flute shapesare suited to and will affect the strength of various grinds.

[@WYOMINGWOODTURNER]

Nolan, I totally agree. I have been taken to task on this issue when the video first came out. I addressed it and corrected myself thank you for your explanation. Sam

[@pablogazmuri5656]

Very disorganized presentation Sam. Why don’t you like the V shaped flute? I cannot grind a V shape tool the some way I do a parabolic. I would not buy a V flute tool.

[@WYOMINGWOODTURNER]

Perhaps I did not mention why I do not recommend a V shaped flute. The V shape does not allow for easy chip flow from the flute or chip ejection from the flute. I also would not buy a V shaped flute. I do not agree that this video was disorganized. I worked very hard at covering those grinds that are important-showing photos and explaining each. I also try not to make any video too long. Perhaps I could spend 90 minutes on a topic, but i really don't want to do that. I try to publish one video ach week. I spent about 30 hours on this one. So maybe I did not take enough time to explain this complicated topic. Sam

[@woodgrainnz]

Great information Sam thanks for clearing that up nice job