Grinder Wheel - Size, Grit, Function - Which to Pick? - Heat is Evil
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- Опубліковано 29 вер 2024
- One of the most asked questions when people see me sharpen on a grinder is about the wheels: what size, what grit.
Today's video discusses the function of a grinding wheels size and grit and my opinion on what works best for the majority of woodworkers. With that you can decide what's best to spend your money on to gain a lifetime of functionality.
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Videos Referenced:
- Sharpening for Beginners: • Grinders - How to Shar...
- Grinders: • Grinders
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Bonus:
Tomislav Tomasic Woodturning (Dodir Drva) - / @tomislavtomasicwoodtu...
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Tools & Material Used in this video:
- Associate Links (they give a little on back end to wortheffort)
* Wolverine System: amzn.to/45gNh2f
* Vari-grind: amzn.to/4ccgYnc
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- Non-Associate Links (No compensation for recommendation)
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Associates Link of other items such as Tool, Book, etc.... I already own/use in woodworking craft that are available on Amazon - www.amazon.com...
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Shawn, thank you very much for including me in your video , very kind words and means a lot coming from you.
You have been one of my many recomendations to viewers as well local students that wanna learn woodturning.
So much in depth knowledge in this video ,great job.
Just to add, I use cbn 180 grit, which in my opinion is plenty fine for turning and planing to add 80grit cbn . Before a year ago, I only used 60 and 80 white wheel as these were available in Croatia and they work like you said just fine.
P.s you said name correct,last name very very very close 😄.
Have a great day.
Great comments regarding grit, I stopped at 320 & often thought a 600 would give a keener edge, I bow to your wisdom. I also congratulate your accurate comments on Tomoslav, I stumbled across his Channel some time ago & find his tuition very practical and easy to put into practice.
Thank you, Shawn. 😊 Tomislav is very good. 👍
Thanks for the rundown. I sharpened gouges on my newly acquired low speed grinder for the first time recently and noticed how hot the friable wheels made my tools. It made me hesitate to use them on my turning right away and elected to let them cool. I am sensing a CBN in my near future! Great recommendation with Tomislav! He has a gift for teaching, like you!
wortheffort, cool video my guy
Great primer on grinding wheels. Thank you for calling out Tomislav. I've been following him on UA-cam for a while. I agree, he is very good!
Yep, Tom is areal master turner. Check him out.
Tomislav is a very good instructor! For me, he's constantly doing "Why Didn't I Think of That?" turning techniques. Shawn, good video!
yay more content. im on 180 cbn woodwonders 4 in 1 + love it. i also us a wire wheel on the other side of the grinder to clean the tools of pitch. so the cbn stays cleaner longer. also use the wonder stick for pre cleaning
I agree with your assessment of 600 grit. I do not see much difference in the edge but you need to be dead on the bevel because it heats up fast and takes a while if you are not dead on. Tomi is a great WT UA-camr to watch. It has been fun working with him Sam and Richard for our month 4-Ways collab videos.
This is a very timely video for me as I've been looking to replace my friable wheels with CBN. It sounds like 180 grit with the radiused edges is the sweet spot for touching up my turning tools, and maybe keep a high-grit friable for shaping which I don't think is going to be as common. On the 600 I see that you have the type with the CBN on the side of the wheel. How often does that flat part get used in normal turning tool sharpening?
Awesome video thanks for all your knowledge sharing over the years. It has all really helped me in my learning to turn. Keep up the awesome work 👽
Nice video even tho I do things totally different. More than one way to skin a cat???
CBN is not a diamond and in many cases better for harden steel.
CBN stands for cubic boron nitride, a superabrasive that offers almost the hardness of diamond, cool cutting and the ability to work with ferrous materials, unlike diamond.
Diamond is composed of pure carbon and is produced under high heat and pressure. When Diamond is used to grind hardened steel it causes a chemical reaction and essentially begins to form graphite and lose it strength.
What makes CBN better for working with hardened steels? CBN is not composed of carbon atoms, instead it is formed with boron and nitride under pressure and heat. Grinding hardened steels produces high temperatures, CBN has a great thermal conductivity, keeping it cool under extreme heat.
Diamond is widely known as being the hardest material for grinding and sharpening.
It is cost effective when working with carbide, glass, ceramics, ferrite and non-ferrous metals.
The biggest advantage of using a diamond wheel is its hardness and also its high thermal conductivity. The high thermal conductivity, allows the diamond crystals to transfer heat away from the cutting edge of the wheel and, when necessary, dissipate the thermal energy through the bond and grinding wheel body.
Thank you,Shawn. You always have good information to share. Question for you: Are you familiar enough with the Sorby Pro-edge sharpening system to have an opinion on it? The owner of the local woodworking store really pushes them.
Shawn your videos are always very useful and presented in an approachable and undersandable way. Thanks very much indeed.
I find it hard to believe that there is appreciable heat exchange between the tool and the wheel. It's more likely that harder diamonds just cut with less friction.
I think the coarse wheel stays cooler partially because the ground off material takes more heat with it.
Good one Shawn. your information always helps. Good to see you again,
Thanks for the info about the CBN wheels I was in a bit of a dilemma,now I can take an educated decision I’m going for 180 and an 80 grit..
I've learned a lot ❤ thanks ☺️
Great video. Thank you
Brilliant video - I've been missing this format :) The info on the heat generated from the 600 grit stone was so important - thank you for that! In the reference links, you included the Wolverine (again - thank you), but no links to reputable wheels. Do you recommend one manufacturer over another, or are all wheels equal (aside from grit)?
I don’t know enough about the different brands available now to recommend one.
I just use platforms to sharpen.
Are you still using the Wolverine Diamond Dressing Jig to Dress the CBN/Steel Wheels?
@@ekbanjosworld4926 you don’t dress cbn
How is Jack doing
whoa a little color on the edge does not mean you take a half inch off the chisel. Just take away the color plus a millimeter or so.
thats a great demo of the coarse vs fine wheels and heat, its really counterintuitive and a demonstration like this is really nice
More good info, Shawn. After watching this, I'm glad I chose 180 and 320 for my CBN wheels.
I recently found Tomislav as well and I agree with you.
I bet the 600 grit wheel would be better at slower RPM.
On a Tormek they would probably be fine.
Shawn thanks for this lesson. It confirmed that my choices for grinding wheels were correct. Thanks for sharing.
Also, your bonus link to Tomislav Tomasic was on point. He is Raffan trained and is an excellent wood turner and teacher. I've been watching his videos for quite a while now. We are fortunate to have folks like you and him to learn from. Thanks again. 👍🏾
Enjoyed the video. Thanks for sharing
Wow! This is a very good video. I learned a lot. Thank you.