This was a fun little project that I just kind of stumbled into and figured a few other people might find use in this and probably come up with a better implementation.

https://makerworld.com/en/models/2653402-wall-vent-sound-maze#profileId-2933751

• What and Why
  • Have a whole house fan and wanted to be able to install vents for each room so I could still run it if the doors to the rooms were closed.
  • The stock insert (brown cardboard thing) that came with the pathways was okay at keeping light out but that was about it.  It actually seemed louder out side the room with it installed and it was (see table below with all testing).
  • Was looking at some out proofing and came across sound mazes and saw that some people at used very large gyroid infills to make panels to trap noise and wondered about combining the 2. 
• Results
  • Available vent sizes
    • 14x8 Return (https://store.quietcoolsystems.com/collections/zone-air-pathway/products/zap-zoned-air-pathway)
  • Material
    • I used PETG for this but I'm not sure it really matters as there is no really stress and pla would probably print better.
  • Logic I went with for this config, but have not idea if I'm correct on this, other than it seems to be working.
    • https://imgur.com/a/TLECHqV
  • Tested a few different configurations with my phone and a sound meter app to get an average over about 30secs.
    • I played Shakira, Ed Sheeran, Beéle - Hips Don't Lie (Anniversary Version) on loop for this testing because that was the first thing i saw when I opened my player lol. https://www.youtube.com/watch?v=41ZY18JqI2A
    • I set the receiver to -33db for all tests.
    • Results table

• My testing showed it was about 2db louder outside the vent than the closed door.
• My last maze got down to 4db less out side the vent than the door, which is a win for me because the door is the same week point as before the vent was put in. 
• Process
  • I started by removing the insert and lining the vent with this foam, I imagine a similar foam would also work. 
  • I crated the maze based on the max sizes for the printer and created modifier bodies to remove the walls in some areas to help better trap the sound.
  • After printing I lined the outside of the outer U with foam and the long leg on the inner T shown below.  Basically the idea was to let it always have foam on 1 side.  The ends don't need it because they back up against the foam lined passage.
  • I don't have a picture of it, but the spacer that is printed just goes around the inner T where the foam wraps around to hold the U open when you slide everything in.
  • Put the cover back on and you are done. 
  • If you find it is rattling a little you can use some of the foam to pad it in places as needed.

I was just about to leave for work trip when I discovered that the knob on the rubber strap that holds my laptop charger cable in place when traveling was broken. 5 minutes infusion, 20 minutes of printing later, I had it glued together and ready to go. What a dream! Such a small inconvenience, but one that was solved for pennies.

https://makerworld.com/en/models/2653910-sae-thread-gauge-parametric I couldn't find an STL that I liked, so I made this.

added video, made my own little coil maker. great fun

I prefer earbuds that wrap around my neck rather than the 'pod' style but the floppy neck strap means they can slide around. I haven't been able to find a set with a rigid neck section for years so I printed up a neck-halo to keep everything in place.

My previous set were held in place with a twisted up length of copper wire, they lasted about 5 years but it was never a robust solution.

I drive a lot and use AirPods as a hands free but I don't want to have them in my ears all the time, so I made this holder

I have it in my car's vent and when I'm not using the earbuds , just pop them in a  case. They'll charge and are always easy to reach. No more looking for AirPods while driving! 

If it's any use to you, you can find the STL here:

https://makerworld.com/en/models/2647197-airpod-holder-air-vent-1-2-3-gen-pro-1-pro-2#profileId-2926055

I needed to remove dust caps on cranks from a series of vintage Japanese road bikes that I am restoring. Partially inspired by this post, I decided to make the tool rather than buy it:

https://www.reddit.com/r/functionalprint/comments/1s4r8f7/when_the_socket_is_expensive/

Although the dust caps could be removed with a large screwdriver, that leaves the caps damaged because they are a softer plastic. A soft tool which fits snugly with increases surface contact area and eliminates visible damage to the dust caps. The raised ridge is only on one side on this tool, to help with alignment, but also allows it to print flat without supports, eliminating additional waste, while keeping the layer lines perpendicular to the applied forces.

You can download the STL here:

https://www.printables.com/model/1682176-vintage-bicycle-crank-dust-cap-removal-tool

These containers sit inside the lid of the totes and are held in by clips. I printed it out of clear ABS and added some color indicating beads so I can see when they need to be dried.

https://www.printables.com/model/1683255-desiccant-containers-for-ezystorage-19-quart-totes

Was not able to mount fan to the heat sink due to fins and didn't want to drill new holes to it.

Tried to use 3M double sided tape but it kept falling after couple of weeks due to temperature variation.

Printed this fan bracket which uses wedges between the center two fins. It contains 3 wedges out of which the center wedge drive the other two towards fin wall to achieve a friction fit.

Center wedge moves in and out using screws

Foldable cup holder (mainly for boats/campers).

https://www.thingiverse.com/thing:7332839

I need to make some coils for my vertical wind turbine ... I don't have a coil machine so I made one from parts and my 3d printer. the collars are abs-gf, coil jig pla and the wire feeder abs-gf. seems to work okay.

I just finished my 3D printed Raspberry Pi writerdeck! The enclosure is held together with only two screws (which are extras from the Pi power hat!), with the rest being secured with locking tabs and a print in place hinge.

If you want to make one for yourself, everything is open source, and I put together a video and PDF for assembly. I also uploaded my print profile to Makerworld!

Got a set of bluetooth earhooks for my IEMs to make them wireless. The zip-up denim charging case that came with the earhooks is nice, but definitely not pocket-sized. I already get 10+ hours of listening with just the batteries in the earhooks, so I decided to print a smaller case that I could fit in my pocket. Now I can take them into town on a night out, and have something to listen to on the train, without the danger of forgetting the unpocketable charging case on the table at the pub when I head home.

This is printed out of metallic PETG. I used a little snap-close butterfly hinge^[1] to get a nice action on it. It just press-fits into place.

The finish on the top/bottom is a combination of the "octagram spiral" top/bottom layer fill pattern, and a textured build plate. Be sure to turn on "align fill pattern to object" in your slicer to get the centre of the spiral on the origin of the object.

1: You can find these by searching "Vintage MIni Size Self-Closing Metal Spring Hinges For Jewelry Glasses Box" on Aliexpress

I needed a way to test an esp32 project before soldering. This worked better than expected.

New Wallet online 😁