Introduction: How to Make a Mini Dremel
In this instructable i make a mini dremel cutting tool out of a few very cheap and easy to acquire materials. The mini dremel is great for cutting through small pieces of wood, plastic and Styrofoam. Its also portable and wireless which adds to its convenience. Building this is a great intro into the DIY/ hobby world and will also add to your collection of tools. Have a look through my instructable to see how it's build or check out my video to see the full tutorial here
Step 1: Materials
Listed below are the materials i used for this build
-A small motor (these small motors can be grabbed out of any dollar store motorized vehicles)
-A 9 volt battery
-A 9 volt battery snap on connector
-A switch (can be taken from any electric dollar store toys)
-A couple Popsicle sticks
-A metal bottle cap
Step 2: Wiring the Dremel
I start off by snapping the connector onto the 9 volt battery and gluing it onto a popsicle stick.
After this i start to wire the circuit containing the motor, the switch, and the battery. For this i used a push button switch instead of a regular one but either work.
I wire one side of the switch to the battery and the other side to the motor.
The remaining two left over wires can then be connected.
For this circuit you need not worry about which side is positive and negative because it will only make you dremel spin the opposite way
Step 3: Completing the Body of the Dremel
Once the wiring is complete i put more glue down against the Popsicle stick and glue down the push button switch and the motor to Popsicle stick. Be sure to be generous with glue so nothing comes off later
After gluing everything in place, i cut off the extra bit of Popsicle stick that was sticking out.
Once that is done i size up another Popsicle stick and glue it on top of the motor and battery as seen in the last picture
Step 4: Preparing to Mount the Blade
I now remove the center part of a pen, the part that holds the ink.
I push the open end of the pen pipe onto my motor and cut it down to 2.5 cm long. This will be where the blade of the dremel will be mounted
Step 5: Making the Cutting Blade
To make the cutting blade i first obtain a bottle cap and cut it in 4 corners. Each cut should be separated by 90 degrees so that the sides will fold out when i try to flatten it.
I then lay it on a hard surface and hammer it until it is flat
Step 6: Adding Teeth to the Cutting Blade
Now, using scissors or tin snips i cut out teeth into the cutting blade.
I found that teeth which are wider and not as deep work best because they well not break off as easily.
Step 7: Mounting the Cutting Blade
Once the blade is flat and has teeth in it, it is time to make a hole in the center and mount it.
For this i started off by poking a hole in it with a hammer and nail. I create a hole big enough so that a small screw will fit through the hole.
I then insert the small screw into the hole and screw it into the part of the pen that was attached to the motor.
Step 8: Alternative Blade
As an alternative blade i also attached with glue an abrasive blade that is used on actual dremels. These abrasive blades are cheap and can be found at hardware stores.
Step 9: Testing It Out
Now that the blade is on we can test it out. As you can see it cuts into Styrofoam easily and plastic as well, but with slightly more difficulty.
Thanks for taking the time to read until the end of my instructable. If you go ahead and build it, make sure to leave a comment and let me know how it goes. If you plan to build it, you should also check out my video so you can see clearly everything that was done.
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