Cura 3d print files
How to find free STL files
Arun Chapman1 July 2022
Guide
Once you’ve purchased a 3D printer, it’s time to begin printing. You may already have an idea of what to print and how to print it – or even be able to design 3D prints yourself. On the other hand, you may be wondering how to get started, or you may not have the time to create and design your own files. This blog will focus on STL files, their uses, and where to find free repositories of files that you can use on your 3D printer.
What is an STL file?
An STL (for “Standard Triangle Language” or “Standard Tessellation Language”) file is one of the most common file formats for both 3D printing and computer-aided design (CAD). These digital files contain geometric information about a design that is meant to be 3D printed. In STL files, these designs are represented by triangles – hence “triangle language” or “tessellation language.” Because these triangles share edges, their location can be determined by a computer or slicing program (more on this below) to create a full image that can be 3D printed. The more complex the design, the more triangles are used to represent it. An STL file does not contain any information regarding texture, color, or qualities such as flexibility or strength – only the shape and geometry. Alternatives to STL files such as OBJ files, however, can store data related to color and texture profile.
How to use STL files
Once created or downloaded, STL files are generally exported into a 3D printing slicer, such as Ultimaker Cura. There, the STL file is converted into a language your 3D printer can understand “G-code,” which tells it exactly how to print a model or design. It is also possible to directly download G-code on certain websites like printables.com. This requires you enter your printer settings and configuration before downloading the file and does entail some increased risk, with the benefit of not having to manually slice the file.
Should you have the technology, STL files can also be created with a 3D scanner, which can scan an object and create an STL file from that scan. Most desktop 3D printing users, however – and especially beginners – will either download STL files from online repositories, or design their own using CAD or other 3D design software, depending on experience and use case.
Where to find free STL files
The internet is full of websites and resources for those seeking STL files. Some of these sites offer STL files for sale, others for free, and others still a mix of both. Below are five of our favorites.
Thingiverse. Perhaps one of the most well-known repositories, Thingiverse offers a wide variety of both for-sale and free STL files. Its UI is clean and easy to use, and it contains thousands of user-created designs and models, which run the gamut, from toys to tools
Cults. Cults hosts a large variety of STL files, sorted by category, including architecture, gadgets, games, tools, and jewelry. If you’re looking for a file in one of these areas, chances are you’ll find it on Cults
Free3D. Free3D is all about – you guessed it – free 3D files. Not all are STL files, but that doesn’t mean there aren’t plenty to choose from. Here, however, you’ll mainly find STL files geared towards hobbyists or more casual 3D printing users. If you’re looking for professional applications, you may need to look elsewhere
STLfinder. STLfinder lacks the polished overview of other sites out there, but its simplicity is a benefit. Just type whatever you’re looking to print into the search bar (essentially the only thing populating the home page), and you’re good to go
Yeggi. Yeggi is similar to STLFinder, in that it functions predominantly as a search engine for free 3D design and STL files, of which it is home to more than 2 million. Unlike STLFinder, however, searching on Yeggi is a slightly more refined experience, thanks to filters and other options that enable you to better home in on exactly what you’re looking for
Printables. Formerly known as Prusaprinters. com, Printables is one of the fastest-growing STL file repositories. In addition to thousands of downloadable files, the site also has great community engagement, and regularly runs contents to discover and spotlight amazing 3D designs
MyMiniFactory. MyMiniFactory caters predominantly to tabletop miniatures and terrain. It offers a great number of free files, although creators are also able to sell their designs – enabling them to pursue careers as full-time 3D designers
Still haven’t found the right STL file? In addition to those listed above, here are several other popular websites that host free STL files.
Sketchfab
GrabCAD
NIH 3D Print Exchange
YouImagine
3DWarehouse
3DShook
Pinshape
Want to get started using STL files with your 3D printers? Download Ultimaker Cura today to start slicing.
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Trusted by millions of users, Ultimaker Cura is the world’s most popular 3D printing software. Prepare prints with a few clicks, integrate with CAD software for an easier workflow, or dive into custom settings for in-depth control.
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At the heart of Ultimaker Cura is its powerful, open-source slicing engine, built through years of expert in-house development and user contributions.
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Best 3D Printing Files Cura・Cults
Cinderella warrior STL
2 €
Settings and firmware TwoTrees Sapphire S Cura4.1 S3D LerdgeX
Free
Cable holder nail - 10.
6 diameterFree
Tarpaulin end TPU
Free
Repair of the front axle of the yard mower
Free of charge
Impact gun trigger button - Goodyear Racing 1/2" air impact gun
Free
Dryer Start Knob
Free
Bracket for small reel 125g
Free
Cura 5.0 profiles (PLA - PETG - PLA Flex - TPU)
Free
Eagle Scout Project Ear Saver
Free
Fifth Element Tea Cube V1
Free
Fifth Element Stencil All Sizes (Large-Medium-Small)
Free
Vase
Free
Hebrew names of the covenant, Hebrew names of HaShem, Yahweh Shlomi: The Lord is our world, Yahweh Rohi: The Lord is my shepherd, Yahweh Rafa: The Lord who heals, Jewish gift, key chain, pendant, talisman, Kabbalistic jewelry
1. 01 €
Fresco Support Freebox Pop Server
Free
Extension support
Free
Halloween Articulated Spiders!
Free
Ender 3 Cura Settings + Print Test (Nano 3D)
Free
CURA ENDER 3 PROFILE
Free
Support from STABILO originals
Free of charge
Pen pot
Free
Frictionless reel seat
Free
Anet A8 Automatic shutdown
1.75 €
Deer wall design
Free
Dragon
Free
Spherical lamp cover
2. 44 €
Wall clock - trade license
48.82 €
Wall clock
4.88 €
Artillery chicken "Hornet"
0,70 €
Vase 0.1
0.50 €
Waitomo Vase [Vase Mode]
2.93 €
Anycubic Photon Power Adapter Wall Mount
Free
NORTH MAN
5 €
Hidden box
Free of charge
MULTI-PURPOSE BOX
1.26 €
Extruder cap CR6SE Extruder cap - 3mf files Cura & Prusa
Free
Paladins Seris Devil
0. 65 €
Paladins Series Default
0.65 €
SuperSmooth PLA,pla+ Cura profile for 8-bit direct drive boards CURA 4.13.1
2,50 €
SuperSmooth PLA,pla+ Cura profile for 32-bit direct drive boards CURA 4.13.1
2,50 €
Rafael Motyka
Free
Call/acceleration test part
Free
El Toro
1.02 €
Montessori multiplication table
0.69€
Creality CR-10 Smart Pro Tool Drawer Inlay Insert Organizer CR10
1.15 €
Fully functional steampunk wall lamp.
€11.72
Spartan DSL 09
1. 02 €
Legs, legs, legs, legs, legs for / for CR6SE & Ender 3v2 (49.923 mm)
Free
Cura 3D tutorial for beginners
3DPrintStory    3D printing process    Cura 3D tutorial for beginners
Cura 3D is such a handy slicing program that many users don't even realize what they are doing. Simply upload your model, select the 3D print quality and start printing. It's as easy as printing with a regular 2D printer.
Intro
Basically, Cura 3D is a 3D printing program - a method of transferring a digital file from your personal computer to a 3D printer so that the latter can process the data and start printing.
Compared to many other slicing programs, Cura 3D seems extremely simple. But if you need more flexible settings, they are also there. It's just that the user interface is implemented really competently and conveniently.
Cura 3D is developed and maintained by Ultimaker, a 3D printer manufacturer known for its perfectionism and strong support for the open source movement. There are a lot of manual settings, but they are hidden from the user (not really that deep), so if you are one of those who are interested in experimenting or need certain non-standard 3D printing settings, you can implement them.
For those who just want to print a part, just adjust the speed and quality.
This tutorial is aimed at those who are just getting started with their 3D printer. We assume that you have just turned on the printer and loaded the media. From now on, we will look at the necessary steps in Cura 3D to start 3D printing.
What is Cura 3D?
Cura 3D is a slicing software for 3D printers. Cura takes a 3D model as input and forms separate vertical layers to create a G-coded file that your 3D printer understands.
Before getting started with Cura, it's worth understanding the entire process of preparing a 3D model file. Even if you use ready-made 3D models, there should be a general understanding.
Three main steps in preparing files for 3D printing:
- Modeling. Modeling (formation of a virtual solid 3D model) is implemented in special applications like 123D Design or SketchUp, etc. These applications support their own specific file formats and allow you to open, edit, save, and export these files.
- Export of a 3D model file. After you have created your model, it must be exported to an STL or OBJ file. These formats are supported by Cura 3D. They differ from native 3D modeling application formats in that they only contain information about the final geometry, without separate nodes and editable content.
- Slicing file export. STL or OBJ file can be imported into Cura 3D, where it is processed and G-code is generated as output. G-code is just a text document, with commands that a 3D printer follows. For example, the temperature of the extruder, movement to the left, right, etc. are indicated.
At the first stage, a solid model is developed, but if you have no such experience, do not worry, on Thingiverse, Youmagine you will find a huge number of ready-made models. There are other sites where you can download models for free 3D printing. As a rule, in such repositories, models are already exported in STL format, so you can immediately import them into Cura 3D.
What exactly does Cura3D do?
Cura 3D converts a .stl or .obj file of a 3D model into a format that the 3D Printer can process. FFF 3D printers form each new layer on top of the previous one. Cura 3D takes a 3D model, cuts it into layers, and feeds those instructions to the 3D printer, layer by layer.
These instructions are transmitted as a G-code, a text document with a .gcode extension. If you open the file, you can view the code itself and even understand the commands.
For example, here is a small piece of code:
G0 F7200 X19.698 Y28.262 Z.36 G1 F1500 E0 G1 F1350 X22.467 Y26.175 E0.15654 G1 X23.338 Y25.568 E0.20447 G1 X24.246 Y25.027 E0.25218
Over time, as you become more familiar with 3D printing, you will be able to adjust the speed of the coolers, the height of the layers, the temperature of the extruder at different points. This is a very useful skill for troubleshooting some 3D printing issues.
Since each 3D printer has its own characteristics: print volume, table area and nozzle diameter, Cura 3D needs to know these parameters in order to correctly generate the G-code.
After you specify the design features of your 3D printer model, you can proceed to the settings for the height and layer thickness. Only then will Cura 3D be able to generate a valid G-code with motion path calculations.
The resulting G-code can be saved to an SD card or transferred to 3D printing via WiFi (depending on the interface your 3D printer supports).
Getting Started with Cura 3D
In this part of the article, we will explain how to get started with Cura 3D. Namely - downloading and installing, optimizing your .stl and .obj files for further export to G-code.
Step 1: Install Cura 3D
Cura 3D is a multi-platform program that is available for Linux, Mac and Windows OS. All versions can be downloaded free of charge from the Ultimaker website.
You will download a file that will install Cura 3D. The installation procedure may differ slightly depending on your OS. In this tutorial, we used Cura 3D version 2.3.1.
- Launch Cura 3D.
- Select your 3D printer model. The first time you launch Cura 3D, it will ask you to select your printer model. If you have Ultimaker or Lulzbot, then they come with a special version of Cura 3D with ready-made settings. If not, or if you want to set up a new 3D printer, then after loading the program select ' Select -> Printer '.
The 3D printer selection menu will load. If you downloaded the program from the link above, then all available printers will be Ultimaker. To select another model, press Other . If you're lucky, your 3D printer will be on the list.
If not, you can go to your printer manufacturer's website and look for a custom version of Cura 3D to download. If it is not there, then select Custom -> Add Printer .
A window will open with the option to add 3D printer settings. At this point, you will need information about your model. Again, you can probably find this information on the manufacturer's website. And if you assembled a 3D printer yourself, then you probably remember all the parameters!
Enter all required parameters and click Finish .
Step 2: Overview of the Cura 3D interface
The screenshot below shows the main blocks of the Cura 3D interface.
Block
Top Navigation- Open File : Use the button in the top left corner of the menu or the option File -> Open File to open your .stl or .obj file.
- Edit : Use to select all models, delete or merge 3D models. Standard, useful commands.
- View Mode : This button allows you to switch between Solid, X-Ray and Layers views of the model.
- Settings : Opens the material and 3D printer settings.
- Extensions : This is for more advanced users. Allows you to install Cura 3D Extensions, which, for example, activate the ability to manually edit the G-code.
- Help : If you have questions, you can't figure something out - this is a great place for
Block
Tool bar (left)- Open File : Allows you to open the . stl or .obj file you want to print.
- Move : When clicked, arrows will appear around the selected model. Using the arrows you can move the model on the desktop.
- Scale : Increase or decrease the size of your 3D model.
- Rotate : A handy tool for adjusting the orientation of the model, its rotation.
- Mirror : When clicked, arrows appear around the selected model. Click to mirror the position of your model.
- Select Settings : A handy feature for adding frequently used settings to the sidebar. For example, you can display the wall thickness ( wall thickness ), model infill ( infill ) and speed ( speed ). Active only for loaded 3D model.
- View Mode . Solid X Ray and Layers . If Layers is selected, a slider will appear that allows you to "cut" the model into layers.
Settings Palette box (right)
In this box, you can adjust the print quality and select media.
Printer . This is the 3D printer you chose in the first step. If you have more than one 3D printer, they can be configured and selected from this list.
Material . Quick selection of the material that is used for 3D printing.
Profile . There are three available 3D print qualities: Low , Normal and High . Selected from dropdown. At the first stages, it is recommended to use the provided blanks. Over time, as you get comfortable with your 3D printer and printing, you can experiment and create your own profiles that suit you best.
Print Setup . There are two options - Simple (Recommended) and Advanced (Custom)
- Simple (Recommended) . Settings Simple (Recommended) ( Simple (Recommended) ) are pulled from the 3D printer settings you enter when you first start Cura 3D. This option is a great option for beginners or for the first launches of a new 3D printer model to see if the connection between the printer and the software is established. The number of settings is limited, but you can still quickly adjust the infill percentage of the 3D model, print table adhesion and add support material.
- Advanced (Custom) . This is where the main fan begins. With custom advanced settings, you can customize everything from quality to 3D print speed. We will explore this section and its capabilities later in the article.
Step 3: Processing the model in Cura 3D
Now that you are familiar with the Curs 3D interface, you can get to work. The first step is to upload the 3D model file. You can export your own model to STL or OBJ file or download from one of the sites with models for 3D printing.
Loading a 3D file into Cura 3D:
- Click on the "Open File" icon or use the menu File -> Open File and select the required STL or OBJ file. For this tutorial, a 3DBenchy 3D model was used. This is a great model for testing new 3D printers or software.
- When the model has loaded, you can check if it is positioned correctly. If everything is OK, then the model will be highlighted in yellow. If there is a problem, it will turn gray and Cura 3D will tell you exactly why it is not possible to start printing.
It is also useful to learn the navigation options in the Cura 3D workspace.
Travel . Hold Shift and the left mouse button to move the workspace along the coordinate axes. This is a useful option when you are zooming in to check small details of a model.
Rotation . Hold Ctrl and left mouse button to rotate around the workspace. This is useful for checking the model from different angles.
Zoom (zoom) . If your mouse has a wheel on the middle key, use it to zoom. If not, then we recommend to buy :).
Different 3D model display options
Cura 3D has three basic model display options. Each option is useful in its own way, and if you're having trouble with 3D printing, one or the other option can help you sort it out.
Solid . This display is used by default and makes it possible to evaluate how the model will look after 3D printing. The dimensions and shape of the model are shown relative to your print table. As a general rule, if you have looked at the model from all angles and it looks good, 3D printing will be successful.
X-Ray . If you encounter problems during 3D printing, this display option will help you evaluate the internal structure of the model. Perhaps you will see what exactly needs to be reworked into details (for example, intersecting planes may appear inside).
Layers . If you have a problem with 3D printing at the same point, or you just want to see a specific cut across a layer, you can use this option. The most accurate way to move between layers is to use the up/down buttons on the keyboard. There is a second option - to use the slider for a quick view. Over time, as you gain experience with 3D printing, this display option will help you to change settings in the G-code (for example, increase the speed of the cooler, adjust the height of the layer or the amount of material fed to the extruder) at the level of certain layers.
3D model setup for Cura 3D . If you need to tweak the model, all you have to do is click on it to highlight it and select one of the options from the toolbar on the left. Here you can quickly move, rotate and scale the model.
When you click on one of the options provided, arrows will appear around the model. Just grab the arrow or ring to apply changes in the direction you want. If you make a mistake right click and select R eset .
If you need to print more than one model, right-click on the base surface and select Duplicate . Cura 3D will automatically try to place the models as well as possible. If there is enough space to print two or more models, the platform will be yellow. If there is not enough space, the print space will be highlighted in gray.
Step 4: Simple (Recommended) 3D printing settings
The easiest 3D printing option is to let Cura 3D apply settings Simple (Recommended) . Although most of the settings will already be specified, you will be able to select the 3D print quality and specify the support material settings.
- Printer . Make sure your 3D printer is selected.
- Material . Make sure the 3D printing material is up to date.
- Profile . Select the 3D print quality.
- Infill . Hollow - printing will be as fast as possible, but inside the model will not be filled with material. Solid (Full filling) - the model will be with maximum rigidity due to full filling, but printing will take a lot of time and material. For starters, it is better to use the most versatile setting Light (Low filling) .
- Helper Parts These are the settings for the support material and adhesion. If you are typing for the first time, it is best to enable both options. If the contact area of your model with the print table is large, then you can disable option Print Build Paste Adhesion . If the model does not have sharp changes in angles and peculiar "canopies" (for example, arms spaced at 90 degrees in a human model), then you can disable the option Print Support Structure .
Step 5: G-code Generation
At this point your model is ready to be 3D printed and all you have to do is export the file from Cura 3D to an SD card or send it directly to your 3D printer. Cura 3D will take care of all the necessary steps to convert an STL or OBJ file into a G-code that your 3D printer will understand.
- Save the 3D model file . In Cura, press Save to file , Save to SD or Send to Printer .
- Estimate 3D printing time . Cura 3D will provide you with an estimate of the time it will take to print your model.
- Start 3D printing . If you transmitted the G-code directly, sit back and relax while your printer prints. If you are using an SD card, install it in your 3D printer and start printing.
Cura 3D Settings
Using Simple (Recommended) settings is just the beginning. Over time, you will want to implement more flexible settings. You can find these settings in the Advanced tab . We will review them below.
Select Advanced (Custom) in the print preferences panel on the right.
- Quality . This is related to Layer Height (Layer height) . This setting depends on the capabilities of your 3D printer. The lower the layer height, the better the quality, and increasing the layer height will increase the print speed. By default, the layer height is set to 0.1mm for Ultimaker 2 Extended.
- Shell . This parameter controls the thickness of the walls of your model, as well as the thickness of the bottom and top layers. This parameter must be proportional (1x, 2x, 3x, etc.) to the nozzle diameter. For example, a wall thickness of 0.8, if you are printing on an Ultimaker 2 3D printer, will mean that the wall will consist of two lines, since this model has a nozzle diameter of 0.4 mm.
- Speed . Generally speaking, the lower the speed, the better the 3D printing.
- Cooling . An important component of any 3D printer and you definitely need to activate this option. As a rule, coolers do not operate at full capacity until the end of the 5th layer.
- Support . Allows you to add support structures.
- Build Plate Adhesion . Not all models have sufficient footprint to make good contact with the print bed. If so, this setting will help you make good contact with the substrate.
- Special Modes . If you are printing more than one model, this option will allow you to specify that they will be printed one by one.
3D Print Quality Settings
- Quality . Every 3D printer has a maximum and minimum material layer height. In this window, you can specify the desired layer height. 0.02 mm is high quality and slow 3D printing speed, and 0.6 mm is the opposite, low quality and high printing speed.
- Shell . Choice of wall thickness. Thicker walls will allow you to print a more rigid model with a better surface. If a nozzle with a diameter of 0.4 mm is used, then the wall thickness must be set proportionally: 0.4, 0.8, 1.2 mm, etc.
- Top/Bottom Thickness . Again, as a rule, it is set in proportion to the size of the nozzle. One recommended practice is to start with twice the size of the nozzle diameter.
Material settings
- Material . Each material for 3D printing has its own characteristics. In most cases, the ability to use a particular material is determined by the structural components of a 3D printer, and not by software. So this setting is unlikely to be useful to you.
- Enable Retraction . It is recommended to always enable this option. Thanks to it, the material is fed in the opposite direction during the idle movements of the extruder.
Speed settings
- Print Speed . This is the overall speed of 3D printing during direct feed. Generally speaking, the lower the speed, the better the print quality. The recommended 3D printing speed is 60mm/s. If you want to increase this speed, it is recommended to increase the printing temperature at the same time ( Printing Temperature ).
- Travel Speed . This is the speed at which the print head moves when no media is being fed. On the Ultimaker 2, this speed is set to 120 mm/s by default. This speed is recommended to be set depending on the speed of direct printing. And to be more precise, it is 2 times more. In this case, acceleration and deceleration will occur smoothly enough to provide high-quality and at the same time fast printing.
Infill settings
Infill Density . This is the amount of material that is fed to the inside of the model. The higher the filling, the greater the rigidity of the model. As a rule, this parameter is set to 20%.
Cooling
Enable Fan Cooling . Disabling this option is not recommended. As a rule, no matter what material you use, cooling is necessary for high-quality 3D printing.
Support material settings
- Option Enable Support (Enable support material) is best not to disable unless you are 100% sure that you do not have nodes with a sharp change in angles.
- Option Placement allows you to choose where exactly the calipers will be located: Touching Build Plate means that the calipers will be located only on the print table. Everywhere means that support structures can also be based on the part.
Bed adhesion settings
One of the most common 3D printing problems is when the model comes off the print bed. Buil Plate Adhision are the settings that help improve model-to-bed contact. There are three options for improved contact - Skirt , Brim or Raft .
Skirt . This is the setting that is best used at all times. This is the line around the 3D model during the first layer printing that helps clear the nozzle when the 3D print starts.
Brim . These are a few additional lines that are printed before the first layer of the model and provide better adhesion of the bottom layer of the model and the table.
Raft . Grid under the first layer of the 3D model, thanks to which the contact between the model and the table is significantly improved.
Each of the listed settings has additional options that will allow you to more flexibly adjust the quality of the contact between the 3D model and the print table.
Generating G-code file
Once you have defined these settings, the model will be ready to print. All that's left is to export the file from Cura 3D to a card or directly to a printer. Cura 3D will convert the OBJ or STL file into a G-code that your 3D printer understands, just like when exporting in Simple (Recommended) mode.