169 Precision Ground Whetstones/FlatStones
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- Опубликовано: 9 сен 2021
- Please Note: I am a beginning machinist and I do not pretend to know everything. Please always operate machinery in a safe manner and if you don't know, find a reliable source. DO NOT COPY ME. I make a lot of mistakes. I provide these videos for entertainment only.
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Those little ones look handy, I'm gonna have to pick some up.
Stan I have a set on the 2"x4" stones for you/ Just so you know.
Stan, you have all kinds of friends. Thanks to you and Steve over at Solid Rock, I knew enough to attempt making a couple of sets.
I will have to save this for future reference. I will get a surface grinder when I get set up in a new location... Thanks, Robert!!!!!
This was my first go, so take my results as a novice's approach.
Great discussion/demonstration….these stones are so handy
Thanks. I really use them all of the time. Thank you Mr. Renzetti!
Very nice video Robert. Enjoyed very much. Gary
Thank you! Cheers!
Thanks for sharing!
You bet!
A A thinks smaller is better hehe, we have the larger set, gift as well from Steven & Vernon fellow RUclipsrs, they are great, so having a smaller pair would fit in better around here, we will follow your well shared efforts Robert to make a set on our new surface grinder as a good future project for us. Thank you, Lance & Patrick.
Hey guys, thanks. I bet you need a really small set!
Very cool and very well presented. Thanks for taking the time to share this project.
Glad you liked it!
Good stuff Robert, Enjoyed !
Glad you enjoyed it
Hello Robert,
I am still searching for a surface grinder but when I find one I will most definitely have a go at making some precision ground flatstones.
Take care.
Paul,,
Good luck!
Good fun.
I found this process to be fairly simple and straightforward.
You may find you develop a taper on your diamond wheel by traversing with this much cut.
If you plunge to a specific depth, move up and over then down to the same depth to clean up, then traverse the last .0002” you may avoid the taper.
These diamond-CBN wheels are so darn hard, they aren’t easy to dress.
I made a press brake. As you say, they are quite pricey.
Precision ground stones are a must in the shop!
Thanks for the tips. I was mostly taking 0.0003" cuts until the end when I got really aggressive at 0.001" You have me interested in finding out if I did indeed wear a taper into the wheel that quickly.
Let’s not think that these stones new, are defective because they remove material. They are not. The entire point is to remove material.
These precision grinds remove the points from the stone, and leave a surface with no real cutting points, so they’re good for eliminating burrs, without removing more than a microscopic amount of the surface (let’s be clear, despite what’s thought, they do remove a very tiny amount).
So two different purposes, don’t grind if you want to remove material, grind if you want to remove burns from machined surfaces.
If you don’t have a surface grinder (and how many people do?), then if you have a high quality diamond flattening stone that’s plated on a thick steel slug, it’s usually flat enough to give most of what a surface grinder can do, though it takes care and a bit more time.
I never intended to give the impression that the stones were defective. I was modifying a store bot solution to serve as a different tool and they work wonderfully. I got the idea from Robin Renzetti, many years ago. Spreading force over a larger surface area means less if any material removed because the force/in^2 is reduced below the shear strength of the material. I really appreciate the comments and suggestions. Thanks for taking the time.
Very cool
Thanks.
How to face and dress your oilstone: Step one, prep your diamond wheel for your surface grinder.
Buddy, if I had a surface grinder, I wouldn’t need the oilstone! Haha, good work, none-the-less. :)
Fair criticism. I had similar comments on my Harbor Freight 20T hydraulic press upgrade. I get it completely.
On a the roughing pass I grind .004 per pass. I take nearly 1 hour per pair to grind all four sides of a pair of stones properly. I have ground over 200 pairs of stones to date.
How long do your diamond/cbn wheels last cutting that many precision ground stones?
I have found them to be very durable.
@@jeffanderson1653 I am still using the original wheel that I purchased and expect it to last for at least another year.
Great tips, thanks. I only did two sides so far, I had considered the others. I might be back.
Mr. Toolwright sir,
The Norton stones I cut came out of the box shaped like a banana, you’ll probably be ok since you made such small depth of cuts, regarding taper on the diamond.
Solid Rock Machine had some unique ways to dress using low carbon steel. Acquiring a press brake may be a PITA to most hobby machinists like myself.
All diamond and CBN wheels that come from Asia have to be dressed imho. My Shars wheels had facets.
Luckily I was able to find a name brand wheel that didn't cost and arm and a leg. Thanks for the info and sorry about the stones you got.
Smaller stones I like that. What type of stone did you use to dress the diamond wheel.
Thanks,
John 🇨🇦
I don't remember the specific dressing stones I used, but they were something like this:
www.strobelssupply.com/3m-diamond-and-cbn-wheels-and-tools-dressing-stick-1x1x6-220-grit-mmmf29028/?gclid=CjwKCAjw9-6oBhBaEiwAHv1QvNKM-WiGkAV53--L5XNuJSSNHREEOPjx-1fseWBIviTEta3H0Bj1LBoC8qIQAvD_BwE
This is another one:
www.zoro.com/norton-abrasives-dressing-stick-bn-3x12x316-in-61463610148/i/G2679363/?recommended=true
Good one Rob . Have you found you have had to shim them to stop any rocking when grinding the first side ? Cheers .
Thanks Max. None of the 4 Norton stones I bought had any issues with rocking. Them seem to be ground or cutoff carefully.
Great result. Would it be a good idea to run a set of three rather than two?
Sure, I am assuming that you are referencing the three piece flattening scheme. After surface grinding, you could make them arbitrarily flat.
I don't know anything about surface grinding, so please forgive me if this is an obvious question. Do you think one could make precision ground flat stones by mounting them in a four jaw and using a diamond dresser to flatten them?
Or I guess for that matter, could you use a tool post grinder to grind the flat stones, obviously a softer stone?
You probably could, but as a rule I try to keep abrasives away from my lathe.
What grit is the diamond wheel? I would think 180 to 220.
Excellent guess. 240.
They will wring together like gauge blocks if they're right, I guess. Is it vacuum or atoms/molecules being close together enough to almost bond that makes them stick together? BTW on another subject why is the name 'Dudley' used in your name? I do hope it not means anything inept or clumsy. My real name is Dudley and am proud of it, as I was named after Dudley Moore. (Hopefully you must have heard of him?) :)
I'm guessing here but there is a place in England called Dudley therefore he could be a toolwright from Dudley
The actual answer is a lot stranger: I was looking for a catchy channel name and the cartoon Dudley DoRight popped into my head and a play on words made me think of Dudley Toolwright. As for Dudley Moore, I have heard of him and as matter of fact I worked on a short lived sit com of his many many years ago. I thought his most entertaining role was as Arthur. By the way he is not really acting. He is quite a character though and quite the pleasant chap.
Bought some stones thinking using them for honing. They were whet stones.....
Thanks for the comment. I'm whet behind the ears, so take what I say with a grain of salt.
@@DudleyToolwright Haha. You never claimed being the master telling Joe Pie all he knows....
A clear question. What can I use those whet stones to except from sharpening knives? Any flattening of mill table?
The stones have various grades, 400, 1000, 3000 and 8000. Flatness? No idea.
Cheers.