Introduction: Improvised Safety Guard for Rotary Tool

Picture of Improvised Safety Guard for Rotary Tool

I recently had to cut a long groove into a stainless steel tube, and because I had to watch closely to see where I was cutting, I wanted to add some extra protection, just in case the cutting disc broke.

Cutting deep and long grooves is quite dangerous, any bad movement could brake the disc, and high speed pieces may hit and hurt you.

Note: This safety guard is NOT a replacement for regular eye protection gear, I still use safety glasses while I use this tool.

Translated by DriX

Hace poco tuve que cortar ranuras en un tubo de acero inoxidable, y debido a que necesitaba ver de cerca el la pieza quise agregar una protección extra en caso de que el disco de corte se rompa.

Cortar ranuras largas y profundas es peligroso, cualquier mal movimiento puede romper el disco y pequeñas piezas volaran a alta velocidad, golpeándote e hiriéndote.

Nota: Este protector NO es un reemplazo para la protección de ojos regular, yo utilizo anteojos de seguridad cuando uso esta herramienta.

Step 1: Step 1

Picture of Step 1

The only thing you need is a clear plastic bottle.

Every rotary tool has some kind of thread to allow some accesories to be added. Make a hole in the cap of the bottle and screw it on the tool.

You have to put the disc arbor now, without the cutting disc, before moving to the next step

Solo se necesita una botella de plastico transparente.

Todos los mini-tornos tienen algun tipo de rosca que permite agregar algunos accesorios. Haz un agujero en la tapa de la botella para enroscarlo en el mini-torno.

Tiene que colocar el vástago del disco ahora, antes de ir al siguente paso.

Step 2: Step 2

Picture of Step 2

Having screwed the cap on, cut the top of the bottle and screw it on the cap. Once this is done, you can use an utility knife or scissors to cut the bottle as shown in the pictures.

After cutting the bottle, you can now put the disc on the arbor.

And that's it. A quick and simple guard for your rotary tool.

Una vez enroscada la tapa en el mini-torno, solo hay que cortar la parte superior de la botella y enroscarla en la tapa. Una vez hecho esto puede usar trincheta o tijeras para cortar la botella como se muestra en la foto.

Una vez cortada la botella, puedes poner el disco en el vástago.

Y eso es todo. Un protector rapido y simple para su mini-torno.


TammyLien (author)2016-10-20

why do you shoe a green and blue lid together with only the blue having a hole then show the blue screwed on and only a green ring on the bottle with no explanation for the green lid? What is the green lif for??

notingkool (author)TammyLien2016-10-21

I didn't use at the end, it was just a replacement cap if i ruin the blue one.

TheCoffeeDude (author)2015-12-24

I'm always on the lookout for great tool tips, and this one was easy to implement and very clever. Well done.

holymoses (author)2015-07-16

Great idea!

But still think of safety-glasses as well!

D_Stigall17 made it! (author)2015-07-13

the most convenient and cheapest Dremel accessory I've tried to make? thank you

screwitdoit (author)2015-03-30

Maybe this was mentioned and I missed it (apologies if so) but not only broken discs can get at you - so can small particles being ground off. I constantly see three dark spots that move with my eye movement. I got them cutting rebar. I WAS wearing safety goggles but the sparks and such can bounce right off your face, then the inside of the glasses and then right into your eye. Not a theory - I see the evidence 24x7 and the bits are so small they can barely be seen by an optometrist so I'm told that unless I want to spend an unholy amount of money on a specialist to remove them I'm safer just to leave them and learn. This is also a good idea for a water guard for wet-work - wish I could hook one to my foredom (no threads). Great ibble!

maidenkrystal made it! (author)2015-03-22

Listo! muy ingenioso, agregué otra tapa para hacer espacio entre la rosca y el cabezal =) gracias por compartirlo, saludos!

MandeepS1 (author)2015-02-24

Exceptionally brilliant and Simple!

jojo 567 (author)2015-01-29

this is awesome , but i have a question for you does any rotary tool can cut wood like ingco dremel ??????

notingkool (author)jojo 5672015-01-31

I'm not familiar with the Ingco. I don't know what to say.

Akin Yildiz made it! (author)2014-12-27

i finally got my tool, and right away with the guard.! thank you very much

Brandon2255p (author)2014-12-26

Awesome! Im doing this

teoietic made it! (author)2014-12-21

great work !!

CollinTheBoss (author)2014-12-20

Great idea!!

eranox (author)2014-12-12

This is pure genius.

I recently had to cut and replace some cheap rivets in one of those folding camp chairs. Although I was wearing safety glasses, apparently a filing got flung into my eyebrow, and made its way from there to my left eye. I had to go to the ER and then to the opthamologist, who PICKED IT OUT OF MY EYE WITH A NEEDLE.

Needless to say, I'll be making one of these tonight! Great idea, and great 'ible!

DB.Cooper (author)eranox2014-12-17

similar thing happened to me, the doctor had to remove it then score the rust off my eye - the tool looked just like my... ... you guessed it - my dremel - except with a little scubber on it.

freaky - just saying.

Love the ible

notingkool (author)eranox2014-12-14

Wow, that sound like a really nice experience!! (sarcasm)

I had eye injuries, but weren't caused by work accidents, and they are very painful.

ppsailor (author)2014-12-17

Hola CHE!

Excelente idea para protección.Ya lo hice !



kenyer (author)2014-12-17

Wow. Really great. This might save me an eye one day! Thank you for posting this.

zimitt (author)2014-12-14

Yes! This is a great idea. I've been using it for years on my foredom for wet rock work. It keeps the water spray from shooting directly onto my face. The neck of the bottle is a great fit for the foredom handpiece, with a cut out of about 1\3 of the neck and it snaps on very securely as shown.

Zaxmon (author)zimitt2014-12-16

Nice! I'll have to try this on my foredom!

notingkool (author)zimitt2014-12-14

Great! i was sure i wasn't the only one with this idea.

Akin Yildiz (author)2014-12-14

this is what I had seen at the store. it is $45. looks cool but way too expensive. we can easily make a custom attachment using a 3D printer and/or acrylic. very nice post, thank you one more time.!

Raitis (author)Akin Yildiz2014-12-16

This is not a guard, but a scroll saw attachment. The guard one is still overpriced I guess though.

spark master (author)2014-12-16

He said he needed to see, metal is not see through, but your Idea is sweet as well, and you can find metal bottles or "cottles" as alky stove makers call them and work them into a project with strap as you suggest. May have to make one of them as well. thanks for he second good idea of the day.

spark master (author)2014-12-16

simple and extremely useful, I own a dremel and will now have a simple guard. I do wear glasses (a plus when using some tools) and I use a shield as well. Cheap enough to make a few as they get destroyed.


docron75 (author)2014-12-15

I like it.

Locobox (author)2014-12-15

This is a very imaginative use of an otherwise unuseful trash! Many thanks for your idea sir!

onemoroni1 (author)2014-12-15

Thanks for the instructable. I use my Dremal all the time and I plan to make this.

nito092 (author)2014-12-14

Really nice

KennethK1 (author)2014-12-14

Why not just wear safety goggles AND a face shield as safety standards dictate? Cutting corners and not having the proper machine guarding will get someone hurt! Using something for a purpose it was not intended will be painful when it fails. A $45 guard is way cheaper than an emergency room visit and plastic surgery.

notingkool (author)KennethK12014-12-14

I don't know anyone that use both at the same time, and i don't think that any standar requires it. I usually prefer face shield over goggles, but i don't have one right now.

This guard deflects any particule and gives me the confidence to put my face 10cm from the piece that i'm cutting.

Also, a safety guard is not required (according to safety standards) when using cutting discs that are smaller than 100mm (4") in diameter, but i decided to improvise this one just in case.

snoopindaweb (author)2014-12-14

Great idea, I hate it when a new wheel destructs all over the room. Thank You. ~(:-})

Bubbler (author)2014-12-14

I have to say well done, you get my vote for this one. I wear goggles, but I know that pieces could his me elsewhere about the face etc.

mjvaughn (author)2014-12-11

Great idea! and good instructable too!
Those discs are very easy to shatter, however the discs with fiberglass reinforcements (the ones with the grid lines) you can pretty much bend those in half while cutting and they still won't fly apart.
I will still use this and other safety gear when working with my rotary tool, because what ever you are cutting can still fly apart. Again very nice idea, thanks!

notingkool (author)mjvaughn2014-12-11

I have those disc (fiber glass - Silicon carbide), and i can assure you that they break. They are stronger than the regular dremel disc (those aluminum oxide ones) but they still can break under side pressure.

Yes, they do. Even the thicker ones for air cut-off tools or right angled grinders can shatter during use. Always wear safety glasses. Even with the safety guards. Pieces can ricochet right into your face.

underground carpenter (author)2014-12-14

Genius! Why did I never think of that?

lilchumy (author)2014-12-14

Great idea! Definitely gonna make one

spylock (author)2014-12-14

Great idea,I will be trying this one today,thanks for posting.

Stour-boy (author)2014-12-14

A clever idea thank you .

Akin Yildiz (author)2014-12-14

i have finally ordered a rotary cutting tool. the first attachment i was going to purchase was this guard. now i can make it instead.! i already got my bottle :) i will share my work. thank you very much!!

ianheavy (author)2014-12-14

Truly excellent idea, those cutting disk sting when they let go, even with eye protection they can hit you elsewhere in the face.

shinystuff (author)2014-12-14

Awesome project, smart and simple!

cybercapri (author)2014-12-14

Very cleaver and extremely practical idea, thanks for sharing this...

Todd2255 (author)2014-12-14

Thank you, very nice and simple

carlos66ba (author)2014-12-11

Very nice! Even better than what I made using a 3d printer (not my design, here is the creator:

notingkool (author)carlos66ba2014-12-11

That's cool, it is similar to mine. I wish i had a 3d printer to make small parts like that one.

My friend Javier and I want to build one the next year.

carlos66ba (author)notingkool2014-12-12

I bought the printrbot simple maker kit. It prints only 10x10x10 cm3, but it does it well. Took it about 8 hours to assemble but I was pleased. It costs just over U$S 300.

notingkool (author)carlos66ba2014-12-12

That's awesome, maybe someday my country allows imports without a bunch of burocratic crap. Even if you go thru that, you can't just import anything.

About This Instructable




Bio: i like to build stuff, mostly mechanical and some electronical. I study Aerospace engineer and i'm an electronical technician. I love to work with ... More »
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