Dremel tips

ebike11

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Hi guys
Not sure if this question is in the correct place.
It is bike related somewhat.
What are some of the best dremel bits you would suggest for grinding away at steel and other metals? I have lots of cutting wheels but I need small tipped bits for smaller spaces etc.
Thanks!
 
How much metal do you have to remove?

I dont use Dremel, I use Mastercrap (the same thing as Dremel) and nothing really worked well.
Remember Dremel is hobby craft, not manly steel metal works.

Dremel/Mastercraft rotary tool bits
Stones wear out
Small circle sanders are good for light use
The steel grinder bits overheat and dull quickly when pushed taking off lots of metal.
Only really good for light, hobby use, not taking out chunks of metal.
The typical array
https://images-na.ssl-images-amazon.com/images/I/51A%2BpeYyJxL.jpg
https://duckduckgo.com/?t=ffab&q=mastercraft+rotary+bits&iax=images&ia=images&iai=https%3A%2F%2Fdygtyjqp7pi0m.cloudfront.net%2Fi%2F39042%2F33635189_1.jpg%3Fv%3D8D6F2BD53331020

The only thing that works well is what mechanic garages and fab shops use, its a larger steel bit used with air rotary. They are pretty expensive, not like the little bits from Dremel.

Not a bad price at Walmart, but what I was talking about is they look like this.
https://www.walmart.com/ip/8-pc-CARBIDE-BURR-SET-Die-Grinder-Burrs-Double-Cut-Metal-Grinding-Bits-1-4-double-rotary-Shank-with-Aluminum-Box/452380206

Could try these if they fit your dremel
https://www.harborfreight.com/diamond-rotary-bit-set-4-pc-69664.html
Horror Freight - https://www.harborfreight.com/search?q=rotary%20bit
They probably sell the same cheap junk as Princess Auto in Canada which is good for limited use, not long lasting, can't use and abuse.


ebike11 said:
Hi guys
Not sure if this question is in the correct place.
It is bike related somewhat.
What are some of the best dremel bits you would suggest for grinding away at steel and other metals? I have lots of cutting wheels but I need small tipped bits for smaller spaces etc.
Thanks!
 
markz said:
How much metal do you have to remove?

I dont use Dremel, I use Mastercrap (the same thing as Dremel) and nothing really worked well.
Remember Dremel is hobby craft, not manly steel metal works.

Dremel/Mastercraft rotary tool bits
Stones wear out
Small circle sanders are good for light use
The steel grinder bits overheat and dull quickly when pushed taking off lots of metal.
Only really good for light, hobby use, not taking out chunks of metal.
The typical array
https://images-na.ssl-images-amazon.com/images/I/51A%2BpeYyJxL.jpg
https://duckduckgo.com/?t=ffab&q=mastercraft+rotary+bits&iax=images&ia=images&iai=https%3A%2F%2Fdygtyjqp7pi0m.cloudfront.net%2Fi%2F39042%2F33635189_1.jpg%3Fv%3D8D6F2BD53331020

The only thing that works well is what mechanic garages and fab shops use, its a larger steel bit used with air rotary. They are pretty expensive, not like the little bits from Dremel.

Not a bad price at Walmart, but what I was talking about is they look like this.
https://www.walmart.com/ip/8-pc-CARBIDE-BURR-SET-Die-Grinder-Burrs-Double-Cut-Metal-Grinding-Bits-1-4-double-rotary-Shank-with-Aluminum-Box/452380206

Could try these if they fit your dremel
https://www.harborfreight.com/diamond-rotary-bit-set-4-pc-69664.html
Horror Freight - https://www.harborfreight.com/search?q=rotary%20bit
They probably sell the same cheap junk as Princess Auto in Canada which is good for limited use, not long lasting, can't use and abuse.


ebike11 said:
Hi guys
Not sure if this question is in the correct place.
It is bike related somewhat.
What are some of the best dremel bits you would suggest for grinding away at steel and other metals? I have lots of cutting wheels but I need small tipped bits for smaller spaces etc.
Thanks!

Thx for the info!
Acrually i got a dremel knockoff but larger in size and power. They all take the same bits though. Since its high power youd think there would be a selection for steel
 
Just go real slow and dont over heat the bits if you have to take much metal out.
Lots of selection out there, ebay, ali's, amazon, habour freight even Lowes and HD.
But its really pathetic for any kind of real steel work, I used small cutoff wheel to grind down the slot for my 1/4" plate T.A's and it was so pathetic I just upped it back to the angle grinder but I needed to very little off (~1/16th) which is why I went with the rotary but its no good so just very slightly touched with grinder thin cut off wheel and measured, took 15 minutes to take a hair off, remeasuring every pass.

For tight spaces where cutoff wheel wont work

Go slow, maybe even a bottle of water to squirt cool the cheesy bits down.


ebike11 said:
Thx for the info!
Acrually i got a dremel knockoff but larger in size and power. They all take the same bits though. Since its high power youd think there would be a selection for steel
 
ebike11 said:
Hi guys
Not sure if this question is in the correct place.
It is bike related somewhat.
What are some of the best dremel bits you would suggest for grinding away at steel and other metals? I have lots of cutting wheels but I need small tipped bits for smaller spaces etc.
Thanks!

6mm (3mm shank) carbide burrs. Like these. https://www.ebay.com.au/itm/124202933937
 
Good to have in the tool box is those five Stone tips from harbor freight for $3.99 I tried to put the link in but I'm not smart enough.
Bealls carbide tips look real good.
 
I have been selling high quality US made solid carbide burrs, spotdrills, and milling bits online. I buy by the pound and sell for 4x. Moved a few hundred. Got a few hundred more to move.

I can send you ten or so micro machining high quality carbide if its not to expensive for you to pay shipping. 0.5mm, 1mm, 3mm, 6mm, 1/32 inch, end mills, 4 flute, center cutting, ball mills, still got life in them. Used but ehys still good. PM me if you wanna pay for an envelope ill ship em. YOu have an 1/8 in collet I presume?

This kind of stuff. I get about 40$ for this lot.

These things were made to laugh at steel. Cannot cut through them with a diamond wheel.... They are friggin hard.
 

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There's no getting around the fact that a Dremel tool doesn't have the power or the rigidity to subtract very much steel in a timely fashion.

I bought one to behead the security screws that held my window bars on. Had to replace it with another one to finish that small job, which turned out to be too much for it. As a working machinist at that time, I was disappointed but not surprised by the impotence of the Dremel tool.

I use one in the bike shop from time to time, mostly to put a screwdriver slot into a fastener with a rounded out hex socket. My impression is it's not articulate enough for delicate work (jewelry and such), but it's too delicate for, you know... work. A tool that's born to fake its way through.
 
I have used a small dremmel tool with cutoff wheels to cut clamps on exhaust pipes were a larger tool wouldn't fit. This was quick.. Used some of the grinding stones and they worked not real fast but worked.
The guy that offered the tools, I'd take him up on his offer.
 
Chalo said:
There's no getting around the fact that a Dremel tool doesn't have the power or the rigidity to subtract very much steel in a timely fashion.
H'mmmm .... I wonder if there is a more appropriate nomenclature. Mine is NOT a Dremel but a Sears variable speed model that I purchased too many years ago (but more than 10) to remember when. I first got it to port and polish an aluminum head for 125cc scooter engine. Since then I have used it for all sorts of things from cutting holes for electrical boxes in sheetrock walls to cutting off small fasteners (numerous 1/4" and M6 bolts). I have been known to get it hot enough to have to let it cool down but like the energy bunny .... it keeps on running.

Granted that it would not be my tool of choice for grinding down and smoothing steel welds. However for small jobs in plastic, wood, aluminum and thin sheet metal (steel) ... it does get the job done where nothing else I have will work. For heavier work I would resort to a electric (no compressed air supply these days) die grinder but it is heavy, noisy, cumbersome and inconvenient.
 
Chalo said:
There's no getting around the fact that a Dremel tool doesn't have the power or the rigidity to subtract very much steel in a timely fashion.

Yup 100%. A 200w peak tool aint touching steel for any extended time. Burnt city, no matter how "machinable" the metal is known to be ( whatever steel it may be).. Poor thing will just overload. YOu must nibble away, at the screwdriver slot or the exaust header, to remove... Or the tool gets overwhelmed (an breaks). If it aint cutting.. its making dust and burnin. Some hobby grade CNC machines use the smaller Dewalt or Delta dremel, for a spindle,,.. I kinda think they are worthless too.. they overheat on continuous duty.

Real steel cutting milling machines, consumer grade, are about 800w-1.5kW... ( like my Benchmaster mill)... The real ones in factory are like 1kW through 30kW ( huge machines with 10,000$ spindles alone) .
 
Chalo you were not supposed to cut the bolts off that hold the bars on your windows you're supposed to say inside. Those bars were meant to keep you in. Be safe.
 
Hobby grade rotary tool is the name of it. Good for wood work and very light duty that has been mentioned. If you want to try it out just buy it when its on sale, tool and bits.

Mastercraft Rotary tool sold by a national chain Canadian Tire thats more then tires and auto repair, its everything, like Sears: pans, tents, fishing, tote storage, home cleaners, tools, dog food, bathroom, garden. I am just making a little shelf for under the desk and looking at sizes of totes to fit. Their house brand, Mastercraft is better then Princess Auto aka PA (same as Harbor Freight aka HF). Everything has their place, HF good for stuff you need for one time/limited use. PA has good return policies, whats your morals? Does it matter its been used and your cheap.

Dremel like Dyson has good marketing. Dyson uses generic motors.
Well I guess I should see if AvE done Dremel yet. Well well well, looks like Dremel sells more then just rotary tools. Saw Max, Multi-Max, Scraper thingy and router like thingy. Professional grade non the less huh :wink: :lol:

BTW I think Dremel are sold like Dewalt/Millwaukee and the like at HD
Consignement, HD dont buy nothing.

https://www.youtube.com/c/arduinoversusevil2025/search?query=dremel
AvE will do a plastique analysis, like whether its glass fibre reinforced and give plastic #'s, even tell ya how the factory machines are by the ejector marks.
 
"Made for America" is a joke in my country to describe cheap junk. Also American brand names going down the road of cheap and nasty from the lowest Chinese bidder. Dremel is one. Recent experience with another was Nutribullet. Really nasty when you get them apart. It failed five ways in the first two months. A real POS.
 
I use them since they exist. I can’t count the bits. Some had never been used, and those useful ones had been replaced 100s of times. I use mostly diamond cutting discs or drilling/boring bits, not expansive but very short usage life.

I can’t see much use of them building ebikes, other than fine crafting details.
 
You have to remember that consumer grade stuff, is designed to fail, they are engineered to fail.
Home owner grade is a slight step up from hobby grade and if you use those product for any kind of heavy use, they will fail.

Also note you can use the Rotary Tool to help take off foot heel caluses, like the toe nails that were mentioned.

A good use for the Rotary Tool is engraving 249W on the motor case and controller housing, so all you Europeans and Aussies with that stupid law, are well within the law.

American Made
Professional Grade
slogans are all to sell the sucker a product

Aint marketing and branding amazing
 
It's 200W for Aussies and it is stamped lol. Unless it is an EN15194 pedelec which has to have the standards sticker... Regarding EN15194 250W limit it is useful to understand the standard.

It is not stupid. Bicycle is human powered. That is the basis of the existing laws. Bicycles are also covered for the human damage they do under compulsory third party injury insurance through the state governments... for free. Part of that is the eBike must conform to the standard for its insurance class. And the (very successful) public health care system (even you'd be treated) is taxpayer funded.
How many here have any sort puplic liability insurance for their electric motorcycles? My bet is very few if any and causing an injury is likely going to be a hit and run. The poor bastard you've just maimed gets to foot the bill. You're big on freedom and rights... how 'bout those of your victim. Talk about backward.
It is a similar story regarding injuries in France.
Germany and Switzerland have speed pedelecs (1000W 45kph), but those are rightly considered mopeds. Registration, insurance and a licence like any other motor vehicle... and a level of accountability equal to that of any other driver.

Tongue in cheek lol.
 
Anyone is insured on the road here, even one who would ride a 40 hp wheelbarrow, or a wheelchair on the highway. No fault insurance, nobody can claim any damage from anyone else on the road.

The police does apply trafic law. You can be fined for any trafic rule like any other vehicle, but they don’t care about the power and speed that a vehicle is capable of. Yet, if you give them reasons to want you off the road, they will use all and every article of the law to seize a vehicle and fine a max to the offender.

In France you have more chances to be arrested and fined going to work quietly on your own ebike, than riding a stolen scooter like a jerk.
 
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