introduction to 3D printing and Prusa printers

An introduction to 3d printing principles and Prusa printers.

1. INTRODUCTION to 3D PRINTING Stephane CLOATRE

2. DIFFERENT TYPES of TECHNOLOGY 1 2 Stephane CLOATRE

3. What is 3D printing ? 3 FFF (Fused Filament Fabrication) / FDM (Fused Deposition Modelling) SLA – ( Stereolithography Apparatus) SLS (Selective Laser Sintering) The 3 main technologies in 3D printing are:

4. SLA “A liquid material is solidified into layers in pre-defined areas. The liquid material (resin) is cured by a ray of light (UV laser or LED panel, DLP projector). SLA 3D printers have a platform that moves once a layer is solidified to create space for a new layer that adheres to the previous one. Compared to FFF printers, the objects are noticeably more detailed , however printing usually takes longer and the print volume is smaller. These printers are especially suitable for industries as jewellery or medicine.” 4

5. SLS “Fine powder is sintered (compacted and formed, not melted) by a laser. Every time a new layer is printed, a cylinder spreads a thin layer of fine powder across the platform, which is then sintered with a laser into the required shape. These printers are not massively widespread among the common public.” 5

6. FFF/FDM “A strand of plastic melted by a heating element and extruded by a printing head (extruder) through a nozzle. The most widespread and most affordable 3D printing technology, suitable for printing functional / mechanical parts and prototypes.” 6

7. FFF/FDM 7 A closer look at PRUSA MK3S+

8. FFF/FDM 8 A closer look at PRUSA MK3S+

9. FFF/FDM 9 A closer look at PRUSA MK3S+

10. FFF/FDM 10 A closer look at PRUSA MK3S+ PTFE tube 1 Heatsink 2 Print fan 3 Heat break 4 Heater Block 5 Nozzle 6

11. MATERIALS for 3D PRINTING 2 11 Stephane CLOATRE

12. MATERIALS for 3D printing PLA The most used filament. Easy to print No unpleasant odor Cheap Hard and brittle Not temperature-resistant PETG More flexible Good strength and durability Chemical resistance Food-safe Warping Stringing ABS Strength Durability Temperature tolerance Warping Toxic fumes Adhesion issues 12 Stringing Warping

13. LET’s PRINT! 2 13 Stephane CLOATRE

14. ROADMAP 14 1 3 5 6 4 2 (Design a model) Download a stl file Prepare your print on Prusa slicer Launch your print with the gcode Prepare the printer with your filament Save your gcode file Remove your print