Hygrometer Filament Roll Holder

I recently got a Sunlu Filament Dryer Box and I’ve seen a few people mention that putting a hygrometer inside of it (and another on the outside) can give you a good idea of how much it lowers the humidity. Rather than just sticking it inside the top of the clear cover I decided to make things more complicated and put the hygrometer in the center of the spool so it could spin around and I could practice reading things upside down.

Note that every roll of filament from every manufacturer may have a different spool hole diameter. In face, even the same damn roll of filament may have different diameter holes on each side! Don’t bother printing this for a snug fit, just make it too small and add some tape either on the body of the print or on the lip to hold it to the spool. The spool is slowing spinning around so it’s not like huge forces will send it flying out into space.

You can get the STL and .scad file from – Hygrometer Filament Roll Holder. Print it if you need it!


Band Balls

If you liked Band Ties you’ll love Band Balls. Maybe not, but I made them anyway. Just like Band Ties you need to supply your own rubber bands, but you’ve probably got a bag sitting in a drawer somewhere.

Secure those pesky cables! Attach a thing to some other thing! There are 101 uses that I will not list here today!

To attach the rubber band you can cut it, thread both ends through the two holes, and then tie them together… Or you can thread the whole thing through both holes and loop through/around itself.

Print in any color you like. There are no rules! You like blue? Blue might look good.

Too small? Scale it up! Holes not the right size? Fire up OpenSCAD and make some changes. Have Fun!

You can get the STL and .scad files from – Band Ball. Print ’em if you need ’em!


USB Footswitch

I made a USB Footswitch. Someone got in touch with me and wanted a button that could work with QLab and that they could easily trigger with their foot. I designed and printed an enclosure and I made it pretty darn solid. I’ve stood on it and it hasn’t broken yet.

You can find this USB Footswitch on Etsy if you want or need one. It can be programmed to do pretty much anything you could do with a computer keyboard, and it can alternately work as a USB MIDI device. Which, as long as you need only one button, might be useful!

Here’s a shoe for scale. It’s a shoe that belongs to my wife. I asked her if I could borrow a shoe and she didn’t even want to know what I was using it for. Anyway, it shows how you might trigger the button with your foot.

There’s a port for a Micro USB cable, and you’ll get a 6 foot USB cable with it. You could use a 10 or 15 foot cable if you have one, or use a pair of USB over Ethernet if you want to go even further. Maybe your computer is in another room, or another part of the building. Maybe it’s in the control room and you’re in the booth. I don’t know.

Those rubber feet on the bottom should prevent it from sliding around. It’s also fairly heavy for its size, so that should help it from sliding around. Stay put, footswitch!

Here’s a computerized rendering of the device. I model everything I 3D print using OpenSCAD because I love it.


Programming with OpenSCAD

I recently picked up Programming with OpenSCAD from No Starch Press. I’ve been using OpenSCAD for over 10 years, and I’ve not yet mastered it, but I’m definitely proficient at it. I’ve learned a lot of tricks over the years and I’ve created some complex 3D objects, but there’s always more to learn.

So did this book help? Yes. I read it while I was “offline” (meaning, on vacation away from home for a week) and it was good to just read a book and have a reference without being distracted by a computer. If you’re a complete newbie to using OpenSCAD, this would be a great book for you. I could still do most of what I do without ever having read it, but I feel like I picked up enough tips and tricks to make it worthwhile.

Other things to check out are the OpenSCAD Cheat Sheet, and the GitHub repo for the book which has all the code you’ll find in the book in case you want to grab any of it.


Wyze Cam Magnetic Shelf

I needed to mount my Wyze Cam to a metallic door but still wanted it upright (and not sideways) so I made a small shelf, added magnets, and stuck the metal plate that came with the camera onto it.

I used 12mm x 3mm magnets, so the pockets are for that specific size. I didn’t glue them in as they fit really well, but did add some gaff tape so they don’t fall out.

If you’re familiar with OpenSCAD you can modify the .scad file to allow for different size magnets. I seem to have a large pile of 12mm x 3mm so I just used those.

The metal plate that comes with Wyze Cam has a mounting hole in the center but also has adhesive, so I just stuck it right onto the shelf. It should stay put just fine. (I probably could have used a few washers as well, but I have a few of these plates now.)

You can get the STL and .scad file from – Wyze Cam Magnetic Shelf. Print it if you need it!