Introduction: DIY Mini Drill

Hi guys, this is my first instructable, my english is bad, I take terrible photos, so... :)
In this tutorial I will show you how to make a cheap drill.

Materials

-Compasses
-DC motor
-Terminal block
-Wire

Note: I found that the diameter of the compasses' leg's are 3mm in most cases. So try to find a motor with a 3mm axle, and the holes on the terminal should be 3mm too. With a 3mm terminal you can use any dremel tool, if you replace the "chuck".

Tools

-Screwdriver

Not necessary:
-Electrical tape
-Plier
-Saw
-File

Step 1:

Take apart the compasses, we need the component marked on the picture.
Actually, it is a mini chuck. :)

Step 2:

Now take apart the terminals with a knife. Remove the plastic, we only need the inner metal part.

Step 3:

Mount it on the motor.

Step 4:

Insert the compasses leg into the hole.
I replaced the screws with newer ones.

Step 5:

Now we are ready. :) If you want you can solder wires and a switch to it. I didn't solder them, because I use it with crocodile clips.

You can easily use 2-2.5 mm drills, for the smaller ones you need to put on some electrical tape or thin wire to the drill to fit in the chuck.

Step 6:

Now try it on an old PCB, or something else.
I give 12 volts to it from an old ATX psu.

Step 7:

Here is my first DIY drill, I made it before the instructable. Actually it is the same, but I mounted a push button to it, and I put on some electrical tape so it is more ergonomic. :) I made this for only PCB drilling so this is why the the drill bit is so short.

Step 8: One More Thing - New Screws for the Terminal

So I decided to add more steps, to make our drill better.

Finishing touches...

I didn't like the old one with the two long screws, so I made two mini screws.

First of all, find a screw which fits in your terminal. Put it into a vise or grip it with a plier.(I don't like the original screws, they are "weak")
Then take a saw and cut them or you can use your DIY drill :) - fortunately, all of the dremel tools fit in the terminal.

Step 9: One More Thing

Then cut a small line on the top of the screws.

Step 10: Last Thing

Last step, I promise. :)
Not necessary, but you should do this. Take your mini chuck (the compasses' leg), and place it in a vise or grip it with a plier. Then we need a small metal or diamond file, and you have to make a small flat area on the chucks axle. (The reason why I did this - the screws in the terminal will provide a better grip on a flat area than on a circular axle)

Step 11: The Finished Drill

Now we are ready, I guess. I think it looks better.

Step 12: The Finished-finished Drill

I found a small plastic tube and my motor perfectly fits in it. :) Then I put on some heat shrink pipe, so now it is indeed finished.

Comments

author
amiir made it! (author)2015-06-29

the terminal block is a good coupling and worked alot in my projects.

i always have problem with making screws short.

i made mine just for taking photo and put in your instructable :D

IMG_5659.JPGIMG_5660.JPG
author
ChristopherN7 (author)amiir2017-02-25

What type of electronics might I be able to salvage one of these terminal blocks? Can u please list as many common electronics or appliances or etc. as possible. So I can hopefully find one on something I have lying around.? Thank you

author
amiir (author)ChristopherN72017-03-08

you can buy from any electrical stuff stores. the terminals are not expensive. you can buy some and use in your works. also you could find one of those in old halogen lamps transformer. or transformer of Fluorescent lamps and many other stuffs. but simple way is purchase from store.

author
deskpro256 made it! (author)2017-03-07

I made something similar. I couldnt find anything like what you had, and had literally no money, I found I could use and old syringe and somehow worked with that. Works pretty decent. But I still want to try your type, seems a lot more rigid.

I'm powering mine with a switchable power brick (3-12V 1.5A) and seems to be great for it.

7bd019a6-087f-4430-b85e-0d328430a509.jpg
author
cguerrero chavarria (author)2014-05-09

I made it, i try to find the compasses but i couldn't, so i try to made the same diameter the two things and it drills pretty sweet, regards from Quetetaro, Mexico.

temp_1265693458.jpg
author

Excuse me What type of electronics might I be able to salvage one of these terminal blocks? Can u please list as many common electronics or appliances or etc. as possible. So I can hopefully find one on something I have lying around.? Thank you

author

Hey, this i bought it from a hardware store they are used for conecting cables together mechanicaly, maybe in home depot you can find them, good luck, cheers from México

author
SerhiiB1 (author)2017-01-03

Nice idea! I have similar, mini PCB Drill without a chuck :)

author
kkazuto (author)2015-11-28

what type of compasses is that?

author
AbhisP (author)kkazuto2016-07-14

Its an engineering compass mainly used by engineers for engineering graphics.

author
AndrásR2 (author)2016-01-23

I made it before i seen this article.The motor vibrated as hell, the motors sleeve bearing got damaged and that terminal thing blew up, almost ended it in my eye.These motors rotating too much rpm to make these unbalanced things possible.Just sayin'

author
radex92 made it! (author)2016-01-15

Works perfectly :)

WP_20160115_004.jpg
author
NoynonMayta (author)2015-11-12

great

author
sina elec (author)2015-06-20

my drill vibrate too

author
mihir.sahu.355 (author)2015-06-01

my drill can not poke a hole in popsicle stick an vibrate more can u resolve

author
mihir.sahu.355 (author)2015-05-22

can a wall driller or wood drill can be mage with this attachment pls reply

author
roshany (author)2015-05-10

nice idea..

author
Roshan the innovator (author)2015-05-10

awesome idea.....it helped me alot....

author
ace11d7 (author)2015-04-13

This is an amazingly helpful instructable

author
ace11d7 (author)2015-04-13

This is an amazingly helpful instructable

author
JaganHari87 (author)2014-09-10

Really super i ll search 4 this type method last 2 month ,,,thanks

author
Kante Tech (author)2014-07-16

Thanks I have been looking at something like this for a while now.

author
TrieuIV (author)2014-06-13

This is a ideas interesting

author
wotboa (author)2014-05-31

Here is the method I used to attach a micro-chuck
to a motor. Maybe it will work for this project.

See the Instructable: https://www.instructables.com/id/Micro-Drill-Press-revision-A/

Micro_chuck01.JPG
author
liamsi (author)2014-05-15

nice

author
brunoip (author)2014-03-18

great idea, just made mine

image.jpg
author
mspencer8 (author)brunoip2014-03-30

where i can find that terminal block thing? is there any appliances or a gadget that has one? please reply i making my version of there which not just a drill but a dremel also. but i'm stuck with the terminal block because i cant find that thing... any help?

author
ajose4 (author)mspencer82014-04-09

man it is found in all hard ware shops

author
ottawafm (author)2014-03-28

Love this instructable! Lots of ideas. Where did you get the compass?

author
jeffc61 (author)2014-03-20

Very nice work. Once again we see necessity being the mother of invention.

author
shantinath1000 (author)2014-03-19

Very clever and well done!

author
Greasetattoo (author)2014-03-19

You need someone to 3D print you a cover for the drill! GREAT job!

author
gigin (author)2014-03-19

I like your idea, very clever..

author
djokenzi (author)2014-03-18

Good job! I will probably make one of those myself.

author
lean04 (author)2014-03-17

Congrats!

very clever shaft-coupler adapter!!, it´s an instructible on itself..

Mad Max would be proud indeed..

i´ll make one as soon as i can

author
Szabolcs (author)2014-03-17

I added three more steps, I guess it looks better now.

IMG_20140317_185615.jpg
author
pTEARgriffin (author)2014-03-16

Nice work and Congrats on being featured on Hackaday.com

http://hackaday.com/2014/03/16/diy-mini-drill-would-make-mad-max-proud/

author
domints (author)2014-03-16

Nice idea. But doesn't it make problems with not centered axles? Because this terminal makes not self-centering connection, and if the compass part is smaller or bigger than motor axle it might be not centered and might strongly vibrate.

author
Szabolcs (author)domints2014-03-16

You're right. My first drill was vibrating like hell - because the compass' leg was smaller than the motor's axle. But now both of them are 3mm in diameter, and perfectly fits in the terminal blocks hole.

And about the terminal, so far It seems to me it doesn't matter.

author
francisdsa (author)2014-03-15

very nice. innovative. maybe you can extend it further by adding a handle which houses the batteries

author
Granzeier (author)2014-03-15

Very nicely done (and your English is better than many native-English speakers - sad, but true.)

I really like your idea for the chuck - that was a brilliant piece of imaginative engineering.

About This Instructable

88,487views

590favorites

License:

More by Szabolcs:Logic Gates with NPN transistorsDIY mini drill
Add instructable to: