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Dremel Grinding Stones - Aluminum Oxide vs. Silicon Carbide
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- čas přidán 9. 02. 2017
- The most unscientific test ever! Came across some usually hard to find silicon carbide grinding stones for the Dremel tool whil killing time at the local hardware center.
I've heard for years that the carbide stones were a waste of money if you were grinding steel, but that you really need them to grind anything else, whether that thing was either harder or softer than steel.
I decided to grab a couple and dig out my scraps upon which to grind. Overkill I'm sure, but I put them under the microscope to see what, if anything, would be different between the two types of stones.
Spoiler alert! The both work great on steel. The silicon carbide stones will probably last longer, but I'm not sure it's twice as long and they are twice as expensive! Grinding soft metals like aluminum or brass is pointless, regardless of stone. Grab some sand paper or other tooling for these.
Glass and other really hard materials are where the differences show up. The aluminum oxide works on glass, but it wears super fast. Unless you're just doing a touch up here or there, you'll want to invest in the silicon carbide stones to grind on hard materials.
Finally, an informative video about Dremels. CZcams is full of useless Dremel garbage. Great video.
Gone from zero to better than I could ever have hoped for knowledge on Aluminium Oxide v Silicone Carbide stone. Thanks a lot👍👍👍👍👍👍
Aluminum Oxide and Silicon Carbide both come in various grit sizes. The stones being compared appear to be of different grits. The binder is what determines wear rate when the grit is similar in size oil or water would help with the test. Thank you for the video.
Thanks so much, Matt. This video answered my questions perfectly with added useful information. I have to agree with Andrew who commented 5 months ago on your professional presentation and likeable personality.... being comfortable with the camera has a huge impact on a tutorial and I'm grateful that you are so "at ease" . Keep up the good work and I'm sure I'll need your expertise in the future, thanks again.
Probably the most likeable and professional person I’ve seen reviewing anything on CZcams. 👌 Just an excellent presentation 👍🇨🇦😎
Congratulations on 10K Matt!
This was an interesting comparison. I learned something new today and I haven't even finished my coffee yet.
Plus, microscopes are ALWAYS cool!
I secretly want to start a whole channel just for putting stuff under the microscope. If nothing else, it would be a reason to get a better microscope :)
Matt Heere I'd be your first subscriber! We home school(ed) our three children (one has successfully graduated!) and had one for a year through our charter school. The kids loved it! It's very cool to see them exploring the world around them in such minute scale.
Thanks for another great video. I would be psyched for a microscope channel! What scope were you using in this video?
I was told a long time ago to never grind soft metals like copper and brass with stone because the soft metal clogs up the stone allowing heat to build up and the stone can fracture or even explode! In the shops I've worked in all brass and copper would be "sanded" with various abrasives adhered to flexible materials like belts and disks.
Matt huge thank for this - I had this exact question requiring an answer and you've done just that to perfection!
The glass ground better with the aluminum oxide bit because that bit is softer, wears itself away, and stays in contact with the glass in doing so. The glass and the harder silicon carbide bit bounce off of each other, thus losing surface contact. Grinding stone wear is a good thing when it comes to hard materials.
Really appreciate your approach. Thank you for putting this together!
Priceless information there buddy! thanks for sharing!
Sorry to be "That guy", but glass particles are a really bad thing to inhale, please put on at least a cheap dust mask when you grind on glass.
if you did, ignore this.
Aq
Thanks for making this. Trying to research the best use of these stones led me down a rabit hole of lots of interesting information that didn't really answer my question.
Would it be better to use a metal on metal like the diamond bit or a metal file type bit such as used in the automotive grinding tools every time I use the orange or the gray grinding wheels the material eats up the wheel so those types of stones really aren't that effective at removing lots of metal
What an awesome video! You are the Bill Nye of Dremel grinding stones!!!!!! Loved it. Just the info I was looking for.
Awesome, thanks for showing the effects on each type of stone in such detail!
Thank you for doing these experiments. It saves us from having to do them.
Will you do more stuff with the dremel?? Thanks I love your videos!!!!
I put my nose to the silicon grind stone and wore it out immediately. I enjoyed the comparison test demo and congrat's on 10K subscribers Matt! Take it Easy - Glen
I should have mentioned that. You can do in any grinding wheel with too much pressure. Dremel stuff is especially bad since it's specifically designed for high speed - low push use.
And thanks for the Kudos Glen. I'm still enjoying your stuff too. You'll be there before you know it!
Silicon carbide is less likely to get metal glazing on the wheel.
The problem is you just shoved it into the metal.
That rule is for surface grinding. Where you can easily control depths of cut and feeds/speeds.
If you used less pressure when grinding I can guarantee you would see an improvement in the SIC wheel.
A little late to this party but if you're still there I have a question; After grinding the softer metals for whatever length of time, what do you use to clean stuff and junk out of, or off of, the bit so you have a decent cutting service to continue on without the waste metal getting in the way and clogging up the effectiveness of the bit? Thanks
I'm new to all this and have the flat brass surface of a handguard for a Japanese sword (the tsuba) to remove about 2 mm of brass from.
Well done thank you; it was the information I was looking for.
Just got my first set for my birthday. Find information easy and very helpful cant wait to to start first project.
Very useful. Kinda fun too. Thank you!
enjoyed your demonstration, well thought out and presented.
So as far as dremel attachments, what's closest to acting as a mini angle grinder?
..Congratulations on the 10K + subscribers Matt !! It might not have been Scientific on a molecular level, but it was for me...!!
Thanks!
Don't breathe the glass dust, it will cut your lungs in micro pieces !!
Yes, silicosis, black lung, call it what you like, once it gets into your lungs, it stays there forever.
Somehow I got here when I was looking for a way to scuff car glass for gluing marine vinyl to it. I think the emery wheels at a high setting will make enough scuffing to use JD Weld epoxy work for the vinyl. Aside from this now, I know why my aluminum oxide grinding stone went to sh.. after using it on the lawn mower blade for just a little while. Silicon carbide is far superior for lawn mower blades in my opinion. When your mower blades are very sharp, it cuts the time down for the pushing of the mower considerably. I never knew that when I was a young kid. Thanks for the video, this was very interesting.
A dull mower blade also tears the grass, rather than cutting.
Why aren't we measuring the effects on the different media? Like you said both stones are consumables.
I expected to see the work piece results as well.
i just sorted Stella's meal, dodged a glass mine field to find a light source - switched off the torch, and did two laps of the unit in the dark while triple blindfolded- and adjusted my heater thermostat.
and i love pilots!
_lustiDiD_
(-_+)
i'd like the stock room scissors back please!
thank you
Cheers for the good information
Matt im looking to grind down a couple of small rivet heads on the links of a motorcycle chain. I have a normal drill so wondering what the best drill bit would be for this job. Motorcycle chains are made of a mix of steel alloys.
Incredibly interesting, thank you for doing this.
well this gives me hope
my bong broke but not horribly so i plan on leveling the glass out so i can slide over a piece of steel/stainless steel with some orings without destoying the o rings
planning on using a silicone carbide wheel (fine) on the bench grinder
its about halfway through its lifespan
only questions left now is t2 lube or not 2 lube
Thanks for the review. Can you please write is there some grinding stone for the Dremel that can be use for sharpening HM tools, like Vidia or so?
Congratulations on the 10K subscribers Matt..;-p
What's best for grinding cast aluminum water pump on a car?? Need .100 thousands off.
I called the dremel company to ask them what do I use to Blunt the edge of stainless steel. I have flattened spoons there are sharp on the edges and I need to Blunt them. They said aluminum oxide grinding stone but looks to me like they sharpen. Can you help me?
You're really lucky that glass dust didn't get to your lungs.
How do you know ? It may take years for the lung damage to be evident.
Interesting comparison thanks! But I don't think that I would grind glass (can't think of a reason to do it) or soft metals (would file them).
Nice video. Appreciate the info.
We use the brown stones for gunsmith work on garden steel parts.
Good to know. Gunsmith work requires a lot better precision than most of the stuff I do!
I would like to see each one put to a rock. A lot of lapidary wells for rockhounds using the dremel
What you suggest for chainsaw teeth crome teeth tried pink useless
Good tests.. interesting
very informative! thank you Matt!!
That was interesting &
Informative.
Thank you.
Good stuff even though I’m late to the party 🎉. Lol. Been doing little air gunning and Drexel handy. Wondering about all different colors and materials in stones seems like almost all are different opinions. But I like urs. Backed up with microscope 🔬. Yeah.
Stay safe from ur ole hillbilly buddy.
So for glass you use the green ones, for steel the red ones.
And what's for brass/alu then? o.o
Sandpaper or carbide cutters. Grinding stones are all but useless on soft metals.
I see, thanks for the reply :D
I need to remove a few mm from a block of aircraft grade aluminium, would you recommend the 60 grit sanding drums or the 9901 tungsten carbide cutter?
Very helpful! and interesting. Thanks!
You know that we can't see anything from this distance right ?
Nice comparison!
You said you "dressed" the stones. How exactly did you do this?
There is a special stone you take your grinding stone too and it will remove metal particles stuck in grinding stone and it will reshape stone flat again. It resurfaces your grinding tool, restoring it
Good information. Thanks.
More great info. Thanks.
0:00 he says don’t worry, then lists off all the things he can hurt us with. 🤕
Great job!
Thanks! Great info 🌟🌟🌟
getting ready to grind off a couple small welds with a dremel. Any suggestions on the best grinding tip?
The cheaper and more readily available aluminum oxide stones should be just fine for work on mild steel, even the harder welds.
Thanks ! Saved me a "few bob" i.e Saved my money . Will not invest in Silicon Carbide for my aluminium (aluminum) jobs.
when grinding on soft metals heat comes into play and ya need to slow down the bit speed IMO
Thank you, i just buy accesory set of aluminum oxide
I have question is anything for stainless steel sharpening stone for dremal?
Stainless is harder than mild steel, but not enough to cause problems. You can use anything that will work as a stone on other types of steel.
Thanks
hi mate, good info
Isn't aluminum oxide dust a Neuro toxic?
Not according to the MSDS. Principal concern is listed as "nuisance dust" which may cause respiratory irritation (just like any dust can).
You should wear a dust mask or respirator for any operation that makes dust, grinding included. I didn't - but should have. I sometimes make safety concessions to the recording process...
How do I use the dressing stone? What is it for?
I think it is used as a lubricant on metal.
@@dontswin Not a lubricant, it removes glaze and particles from the stone.
Phil?
😂 grant?
@@problemslayer3538 Get out of my pub!
protective gloves please please please
Why, so the tool has something easier to grab onto and twist up?
Can you beard an axe with a Dremel?..
@Will Swift handheld rotary power tool
Silicon carbit 😍