If you're in need of shelf supports with slots for two boards of 140 mm by 20 mm, you're in luck! Printing these supports is a simple and efficient way to create reliable and sturdy supports for your shelves.

To begin, you'll need to ensure that you have access to a 3D printer that is capable of printing the supports. Once you have access to the printer, you can download the necessary design files and load them into the printer's software.

After the files have been loaded, you can start the printing process. The time it takes to print each support will depend on the size and complexity of the design, as well as the speed of your printer.

Once the supports have been printed, it's important to check that the slots are deep and wide enough to hold the two boards in place securely. If any adjustments need to be made, you can use a saw or file to widen or deepen the slots as needed.

Overall, printing shelf supports with slots for two boards of 140 mm by 20 mm is a great way to create a sturdy and reliable support system for your shelves. With the right tools and materials, this project can be completed quickly and easily.