Introduction: DIY Pen Engraver

Picture of DIY Pen Engraver

Here is a quick and simple Instructable about how to make a small USB powered engraving pen.

Mobile users can find the video from here.

Step 1: 3D Desing Case

Picture of 3D Desing Case

The case is 3D printed just to make the parts snap on right size.

You could use a pen's hollow tube with this also.

Printed with Printrbot makers kit. 0.4mm nozzle and 0.2 layer height and 30mm/s speed.

Step 2: Parts

Picture of Parts

Parts needed are:

-Tube to act as a pen

-Push button

-USB cable

-A tiny motor.

Step 3: Make a Hole for the Button

Picture of Make a Hole for the Button

I made this tube just to show how to make the same thing with a normal pen.

Just cut a hole with anything you think is suitable to get the job done.

Measure the button used first to get it right the first time.

Step 4: Electronics

Picture of Electronics

Insert a motor to the other end of the tube. Mine is measured for that motor. Use hot glue if needed.

Peel the cables and heat up your soldering iron.

Step 5: Solders

Picture of Solders

The connections are pretty simple.

Solder motor negative to USB negative and cover it up.

Solder motor positive wire to the button and USB positive to the other end. Cover the wires with hot glue to make sure there is no short circuit.

Step 6: Glue Up

Picture of Glue Up

Use hot glue to attach the button to the hole you made.

Also hot glue the cable end of the engraver to secure it in its place.

Optionally you can use shrink tube to make the USB cable more secure.

Step 7: Done

Picture of Done

This is pretty simple thing to do.

But this works pretty well on soft metals and plastic. Easy to hold in hand and finger operated on/off button.

Watch the video to see the engraver in use.

Thanks for reading!


SimplySly (author)2015-05-11

With a few mods you might have a USB powered tattoo gun... Just sayin...

mkarvonen (author)SimplySly2015-05-11

I was thinking about the same thing :D How ever tattoo gun (coils) needs a lot more current than a PC usb can provide :D

JavaProgrammer (author)2015-05-10

thats all it takes, I thought it had to go up and down. if this works awesome! does it try to roll around whilst engraving?

mkarvonen (author)JavaProgrammer2015-05-11

Most of the engravers do go up and down. I have one that does that. This one works as a engraver just like Dremel would. It rolls around a little but it is so light that it is easy to maintain the correct movement.

Thanks for comment! :)

tomatoskins (author)2015-05-10

Are you using any sort of cutting bit or just the shaft of the motor?

mkarvonen (author)tomatoskins2015-05-11

hi. its only the saft. it works well on soft materials.

About This Instructable




Bio: I am 27 years old engineering student from Oulu in Finland. I make these projects as a hobby, and it would be fun to also ... More »
More by mkarvonen:PipBoy 3000 (working)DIY Piranha PlantPhoto(s) to 3D model
Add instructable to: