Test prints are frequently bundled with 3D printers as a fast and easy way to validate the functionality of the machine while also giving users a chance to experience normal operation. Printing the Included Test Prints on Prusa SL1S Any spills or uncured resin stuck to a surface should be cleaned using 99% isopropyl alcohol and the container for the resin should be kept closed and secured when not actively pouring material. Make sure you use the SL1S in a well-ventilated room to minimize the danger from inhaling fumes. I also make sure I’m wearing gloves when removing the build platform after a print, as the resin tends to pool on top of the platform and can drip off while the platform is being removed. The resin can be harmful when making contact with skin, so make sure to wear gloves when pouring, cleaning up, or handling uncured resin. The Prusa SL1S uses 405nm UV resin, a material that you need to handle safely when in an uncured state to avoid injury. The obvious trade-off is cost the Photon Mono costs $199 and contains only a single sensor (Z-axis endstop), while the Prusa SL1S is 10x the price and contains a multiple sensors for everything from the UV lid to the weight sensor used to detect the amount of resin left. This is a very subjective process that can be difficult for new users, and the SL1S instead opts for a calibration workflow that has a higher level of automation with a lower chance of failure. After loosening the bolt that holds the build platform tight against the gantry, the SL1S drops the platform onto the FEP film of the vat, holding it flat while the user re-tightens the bolt.Ĭompared to the four bolt process used by printers like the Anycubic Photon Mono, this is fast, reliable, easy, and doesn’t require the same “feel” for pulling a piece of paper between the platform and the LCD. The SL1S uses an automated wizard that guides the user through the calibration process, and it only takes a few minutes to complete. This may be due to the reduced weight being easier on the tilt motor, but it does result in a vat that feels a bit more delicate.Ĭonsidering the high level of automation on the Prusa SL1S, it should come as no surprise that the build platform leveling process is nearly completely automated, only requiring a single bolt be loosened and then tightened. I also had a minor issue with the vat itself it feels like a glass or fiber-filled polymer material, as opposed to the machined metal vat included with Elegoo Mars 2 Pro, which feels much more substantial. The SL1S has a fill sensor to detect when the resin vat is running low, which I used to refill the vat after the resin ran too low. Even at the 100% line, I would get a message stating the vat had 220ml or 240ml of resin in it, and I then had to extract some of the resin from the vat. This was the only recurring issue I had with the machine I consistently had overfill errors when starting a print, even when it looked like the resin was under the 100% line. Because of the tilting mechanism of the vat, the 100% volume mark is relatively low on the vat and only allows for 200ml of resin to be filled at a time. The resin vat itself has markings denoting 35%, 70%, and 100% volume. In addition to the FEP film already attached to the resin vat, Prusa has included three additional extra FEP film sheets to use as a replacement when the original becomes deformed or perforated. This peeling motion allows for a rapid transition between layers, due to the lack of a need to raise and lower the Z axis after each individual layer. The SLS1 uses a tilt mechanism instead, tilting the resin vat down towards the front of the printer, which causes the printed part to peel incrementally from the film. Most resin printers like the Elegoo Mars 3 lift the part directly up from the FEP film, delaminating it in a single movement. Unlike most other resin MSLA 3D printers, the SL1S uses a unique mechanism for delaminating the part from the FEP film during printing. In fact, shortly after turning the machine on and connecting to Wi-Fi, I was prompted to update the firmware, which the printer was able to automatically download and install. This is an invaluable step for new users, and the additional value of this detailed user guide will result in a printer that has far fewer issues due to an improper or incomplete setup process. At each step of the setup, the user can swipe the screen to the right, which reveals full-color pictures detailing the process. The 4-inch color touchscreen LCD interface offers a guided setup for the machine, including detailed instructions on how to calibrate the build platform.
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