A 3D model is the virtual input that a 3D printer needs to print an object. In this blog post, we will explain what a 3D model is and how you can get your very own 3D file by downloading it, 3D scanning an object, hiring a 3D designer, or designing it with 3D modeling software.
What is a 3D Model?
A 3D model is a virtual representation of a three-dimensional object that is generated on a computer. It is a model that can be rotated and observed from all angles (see the 3D model below). A 3D file like this is needed as input for a 3D printer.
Not all 3D models were created with 3D printing in mind. Often 3D files were created for animation movies or computer games, and typically these models still need to be prepared for 3D printing. There are several design rules to keep in mind for this, but a very reoccurring issue is getting the right “Wall Thickness”. Wall thickness is simply the distance between one surface of your model and its opposite sheer surface.
A visual 3D model for a computer game often only has paper-thin walls, meaning you can see the walls or exterior facade of the model, but these walls won’t actually have a physical thickness. For 3D printing, it’s very important that every surface of your 3D model has been assigned a wall thickness. 3D printers need information about how thick you intend the wall of your object to be. After all, a 3D printer needs to know if you intend to print something with walls of 1 mm or 1 cm. Once you have your 3D model, make sure to follow this checklist in order to make it 3D printable.
Downloading You First 3D Model from an Online Marketplace
The easiest and fastest way to get your first 3D model is to download it. There are many sites out there that offer tens of thousands of 3D files. While most come for free, some professional designs might cost a few dollars. But as a beginner, you can definitely start with free 3D models. This is one of the beauties of digital 3D modeling: files can easily be shared.
To download your first 3D models, the best place to start is to take a look at our list of top 10 3D model libraries. You will see which 3D model marketplaces offer downloads for free, which are the most popular, the most professional, or the most specialized in 3D printing.
3D Scan an Object and Create a 3D Model
Rather than downloading an existing 3D model, you can also create your own. One way of doing so is by 3D scanning it. There are tons of high-end scanning devices and scanning services out there, but you might want to start with a free smartphone app for your first try. We’ve compiled a list of the 20 most popular 3D scanning solutions here.
Hire a Professional 3D Designer
Another simple solution for getting a printable 3D model is to hire a professional 3D designer. You can find a list of 3D designers, their hourly fees, and their work on i.materialise 3D modeling platform. You can get in touch with a professional 3D modeler, show them your sketches or ideas, and ask them to create a 3D model just for you.
While they will take care of the actual 3D modeling and making sure that your file is printable in the material of your choice, you will, of course, own the design.
Get Started With 3D Modeling Software
Last but not least you can start learning how to use 3D modeling software yourself. This option gives you the most design freedom but is also quite time-intensive. It means that you will learn how to draw and design on your computer in a virtual, three-dimensional space.
Classifying and benchmarking different 3D design programs is a very complicated matter as everyone has different preferences and applications for 3D printing in mind. Our 3D modeling and 3D printing community here at i.materialise uses tons of different software to get the job done: from free online 3D designing apps to high-end professional software.
Once thing is certain, however: there is no single 3D modeling software that dominates the market. There is no such thing as the best 3D modeling software.
If you want to start using 3D modeling software, take a look at our list of nine free and beginner-friendly 3D design programs. This is a great starting point to see which software suits your needs best.
Printing Your 3D Model
After you have created your 3D model it’s time to send it to our industrial-grade 3D printers. If you are struggling to make your file 3D printable, take a look at our blog post about 5 mistakes to avoid when designing a 3D model for 3D printing.
In order to get your print, you can then upload your file here and choose from over 100 different 3D printing materials and finishes including metals, ceramics, or even wood. You can find a good overview of all the materials on our website. After the upload you will instantly see the price of your 3D print in all of your materials. It’s that simple!