Source file: Screwless Heart Gear
These models are all printed in ABS (common injection molding material – same as the material LEGO uses), but I also have a spool of PLA (plant-based, often made in USA) that I’ve been experimenting with.
I did not design any of these, they are all user contributions from the popular 3D content site Thingiverse
Depending on which manufacturer you order your plastic from and how much you order, your plastic won’t always come on a spool. Most sites will indicate if the product is spooled or not, so make sure to check so you know what to expect.
If you do order plastic that is not spooled, it can be a real pain to work with. You have to constantly keep an eye on it and help feed it in properly so your extruder motor can handle it and allow it to properly feed through as you run your print. To solve this issue, Thingiverse user randyy made a filament holder with files included for clips that the filament feeds through as it enters the machine. This allows for a seamless, smooth print that you don’t have to constantly watch and intervene.
The cool thing about collaborative sites like Thingiverse is that people see designs like this and help to improve them. RotoScan made several modifications to the original design and released this heavy duty filament holder & guide that I printed out for my filament;
Source file: Heavy Duty Printable Filament Spool with TOM Filament Guides
This whistle works! Since I don’t currently have 2 extruders I don’t have the option of using support material (this would allow large overhangs and printing objects inside of objects). That means the “ball” inside this whistle doesn’t float – it is attached to one of the walls but protrudes into the cavity enough to allow for a perfect, loud whistle every time;
Source file: Whistle
Source file: Pyramid of Kukulcan at Chichen Itza
Check out this bracelet design by Thingiverse user emmett. It is printed with thin walls which allows it to stretch and expand to fit around your hand as you put it onto your wrist.
Source file: Stretchy Bracelet
There are a lot of printable upgrades for your personal 3D printer available on Thingiverse such as this one to remove dust on the plastic filament as it enters the extruder;
Source file: Mk7 Filament Dust Remover
I accidentally broke a friend’s bottle opener the other week, so I printed a replacement from a file uploaded to Thingiverse
Source file: Pocket Coin-Op Bottle Opener
Here’s a minimal, straightforward toilet paper holder – I added some words wrapped around it for fun and mounted it in our bathroom
Source file: Toilet Paper Roll Holder (slightly modified with added words)