Category Archives: CNC

A Powerful Rare Earth Refrigerator Magnet


Recently I purchased some bumper stickers from Sticker Mule to use and give away at a couple upcoming Maker Faires. Though I’m extremely happy with how they turned out and how fast they got here, I decided later that I wanted these in magnet form. Though normal refrigerator magnets are OK, they really don’t stick as well as perhaps they should, and I decided to make my own with my CNC router and Neodymium magnets that I had left over from another project. The results can be seen below:

As mentioned early in the video, I meant to have the magnets stick out of the back of the assembly, but ended up covering them up with a sticker instead. This left some indentions in the sticker, but it still sticks to a surface quite well. I shouldn’t have made that mistake, but when designing in 2D, a part has to by absolutely symmetrical about one axis if you’re going to flip it and expect it to work.

Obviously this is quite a simple build, and one that could be done manually if needed. I tried to highlight the CNC process with some interesting views in the video, stationing a GoPro camera inside the machine itself. Hopefully you enjoy!

World Maker Faire

If you’d like to see this device in person, I’ll be at the Wold Maker Faire in New York this weekend, and plan to have at least one of these attached to my backpack. If you see it, please say “hello” – I’d love to meet you!

Sticker Source

On another note, I purchased the bumper stickers used here from “Sticker Mule.” I was extremely pleased with the quality of the stickers, and how fast they shipped them to me. If you’re interested in getting your own custom stickers, use this link to get a $10 credit for both you and me!

Lights! Coasters! Drinks!

img_5638-ce-logoIf you’re been following along here, or especially on the “Jeremy Cook’s Projects” YouTube page, you might have noticed that I’m on a bit of a lighting kick. This started with my infinity mirror (which was fun, and I have more plans for it), but then morphed into a few other projects involving non-programmable LED strips.

I purchased a reel of this type of strip (Amazon) several weeks ago, and after coming back to them found that they were really excellent. You can cut them into sections of lights in multiples of three, and they have adhesive on the back, so you simply place them where they are needed and they stay. Another interesting “feature” is that even though they nominally require 12 volts to operate, they work quite nicely with a 9 volt battery.

The Infinity Coaster

Incidentally, a 9 volt battery fits inside a piece of 2×4 cut out with a hole saw along with a microswitch. I had this, along with pieces of one-way mirror in my garage, so after some creative fixturing and woodworking, I had what I call an “infinity coaster.” When you set a drink on it, it engages the microswitch, completing the circuit and giving the illusion of lights stretching to infinity inside of it. As shown in the video, it looks nice, though a coaster over 1 1/2 inches thick still has some room for improvement.

A Translucent Light Up Coaster

I’m not exactly sure when inspiration for this hit, but after Read more »

A Bicycle Cup Holder Designed with Onshape

IMG_4572-cropAfter doing a short writeup on another publication for this 3D CAD program, I’d been looking for an excuse to do a full design with it. I’ve used Pro Engineer professionally, and have dabbled with a few other CADpackages. Though familiar, with a new CAD program you have to kind of learn where all the buttons are.

After trying it out for a few hours, the design came out well, and, it was great to see my design appear in real life out of my CNC machine. Check out the video below to see my process:

Unlike what those that aren’t familiar with CNC tools may believe, Read more »