Is the Original Prusa MK3S+ Worth It? Full Review

The Original Prusa i3 MK3S+ is a well-known 3D printer that many people use for different types of projects. It is an updated version of the earlier MK3S model, with some small but useful improvements. This printer is made by Prusa Research, a company that has built a good reputation for making reliable and easy-to-use machines. The MK3S+ is popular among hobbyists, engineers, and small businesses because it can produce high-quality prints and is relatively simple to operate once set up properly.

Table of Contents

Design and Build Quality

The MK3S+ has a sturdy frame made from aluminum, which helps keep the printer stable during printing. Stability is important because it reduces vibrations that can affect print quality. The printer has an open-frame design, which means it does not have an enclosure around it. This makes it easy to access but can also be a downside if you need to print materials that require controlled temperatures, like ABS.

One of the key improvements in the MK3S+ is the SuperPINDA probe, which is used for automatic bed leveling. This probe helps the printer adjust for any slight unevenness in the print bed, ensuring that the first layer of the print sticks well. A good first layer is crucial for a successful print because if it does not stick properly, the print may fail later on.

The printer comes with a removable, flexible print bed that has a PEI coating. This bed makes it easy to remove prints without damaging them. Once a print is finished, you can take off the sheet, bend it slightly, and the print usually pops off. There are different types of sheets available, including smooth and textured versions, which can give prints different surface finishes.

Assembly and Setup

The MK3S+ is available as a DIY kit or a fully assembled unit. The kit version is cheaper, but it requires time and patience to put together. Some people enjoy assembling their printer because it helps them understand how it works, which can make troubleshooting easier later on. However, if you are not comfortable with assembling mechanical and electronic parts, the fully assembled version is a better option.

Setting up the printer involves calibrating the first layer, checking the filament sensor, and making sure the extruder moves smoothly. The printer has an LCD screen with a simple interface that guides users through the setup process. The screen is not touchscreen but uses a rotating knob to navigate the menus. While some may find this a bit old-fashioned, it is functional and reliable.

Printing Performance

The MK3S+ is known for producing high-quality prints with fine details. It has a layer resolution range of 50 to 350 microns, allowing users to choose between higher detail and faster print speeds. The printer works well with various materials, including PLA, PETG, ABS, ASA, and flexibles like TPU. It also handles composite filaments, such as wood- or metal-filled filaments, though these can wear out the nozzle more quickly.

The extruder system in the MK3S+ is designed to improve filament handling. It has Bondtech dual drive gears that help grip the filament better, reducing the chances of slipping or getting stuck. This is especially useful for flexible filaments, which can sometimes cause issues in other printers. The filament sensor can detect when the filament runs out or if there is a problem with feeding, allowing the printer to pause instead of failing the print completely.

One useful feature of this printer is the power panic function. If the printer loses power during a print, it can resume from where it left off once power is restored. This helps prevent wasted filament and time. There is also crash detection, which can stop the print if something blocks the nozzle, reducing the risk of damage.

Software and Slicing

PrusaSlicer is the recommended software for preparing 3D models for printing. It has settings optimized for the MK3S+ and supports different levels of customization. Beginners can use the default settings, while more experienced users can adjust parameters like speed, temperature, and layer height for more control. The software includes support for multiple materials and allows for advanced features like variable layer height, which can improve print quality without increasing print time too much.

The printer supports G-code files, which means users can also use other slicers like Cura or Simplify3D if they prefer. However, PrusaSlicer tends to provide the best results since it is designed specifically for Prusa printers.

Maintenance and Troubleshooting

Regular maintenance is necessary to keep the MK3S+ running smoothly. The most common tasks include cleaning the nozzle, lubricating the moving parts, and checking for loose screws. The printer’s firmware can be updated through a USB connection, and Prusa provides regular updates to improve performance and add features.

If problems occur, the printer has diagnostic tools that can help identify issues. The community around Prusa printers is also active, with many users sharing troubleshooting tips online. Prusa’s customer support is generally well-regarded, but response times can vary depending on demand.

Pros:

High print quality with fine details
Reliable automatic bed leveling with SuperPINDA probe
Flexible, removable print bed for easy part removal
Handles many types of filaments, including flexible and composite materials
Power recovery and crash detection features
Strong community support and regular software updates

Cons:

Open-frame design can be a drawback for printing certain materials
Assembly requires time and attention to detail if choosing the DIY kit
LCD interface is basic compared to touchscreen alternatives
Can be relatively expensive compared to some budget 3D printers

Final Thoughts

The Original Prusa i3 MK3S+ is a solid choice for anyone looking for a high-quality, reliable 3D printer. It offers excellent print quality, good material compatibility, and useful features like automatic bed leveling and power recovery. While it is not the cheapest option on the market, its consistent performance and strong community support make it worth considering for those who want a printer that will last a long time with proper maintenance.

For beginners, it may take some time to learn all the features and maintenance steps, but the guided setup process and detailed documentation help make it easier. Experienced users will appreciate the level of control and customization available. Overall, the MK3S+ is a well-rounded machine that balances ease of use with advanced capabilities, making it a popular choice in the 3D printing community.