First, you need a 3-D design, typically in a format known as .stl. you could both design one yourself or download one for the custom patches to be added, or do a piece of both— download one and adjust it.
Designing your very own: I don’t understand out of your query what three-D design software program or talents you may have. Assuming from your query which you are a novice, Tinkercad, that is a design device, is a clean one to examine and use, and is unfastened.
There are more state-of-the-art programs as well, consisting of Fusion 360 and Sketchup, however, additionally, they have higher getting to know curves and are probably now not necessary for a keychain.
Downloading an existing layout: Your satisfactory wager might be to search keychains on Thingiverse: MakerBot Thingiverse. you would download the .stl record.
Printing on Custom Keychains
Your question doesn’t say whether or not you have got get entry to a 3-d printer or now not. Assuming you do, you need to “slice” the document to create code (the code that the printer interprets) from the .stl report; applications that do which can be Slic3r and Cura. you’ll then observe the instructions on your printer and the form of plastic filament you’re the usage of to print the item. The hotel and every now and then the bed temperature has to be set, and the mattress must be leveled (newer printers might also degree the bed robotically, that’s a huge assist). usually in maximum instances, you will use either PLA or ABS plastic.
if you do not have access to a 3-d printer, you will send the .stl file to an enterprise that prints it for you for a fee. Sculpteo and Shapeways are that pop into my head, but there are others. It will deliver advice approximately any unique organization.
Usage of Software for Embroidered Patches
A key-chain can easily be modeled (even when not having extended CAD abilities) and then 3-D published. what’s important, in which you select an appropriate era and material. additionally, you want to comply with the design guide online. In my mind, you need to use the powder based totally SLS generation and print it Polyamide or Alumide. As such printers cost some a hundred-thousand EUR, you need to order it from a 3D printing carrier. so as to price you round five–20 EUR (depending on the thickness and duration). Don’t try and print on a domestic-FDM printer – I did that, but the key-chain took hours to smooth and became lots more cumbersome than an SLS-printed one.
What I suggest you do is to use your preferred CAD program (begin with Sketchup in case you don’t realize any software yet), then installation our loose 3D printing integration (or export an STL document via hand) and then use our loose evaluation tool to locate the exceptional fee out there (or download directly to groups like Shapeways or i.materialise).