A simple file. An idea modeled in three dimensions. Then, a few days later, a tangible object. Online 3D printing makes this scenario a reality. Today, specialized platforms are capable of transforming 3D files into physical parts with astonishing precision. But how do you go from a virtual sketch to an object you can touch? The process isn’t linear. Materials vary, print parameters adjust, and the final quality of the object depends on decisions made long before the 3D printer even starts up.
Preparing the file for online 3D printing
Before a part takes shape in a 3D printer, it exists as a digital file. Usually, in STL or STEP format, this contains all the information about the 3D object. But it’s not enough to just download it and start printing. It must first be adapted to the specifications of the machine and the chosen material.
Some preparation work is then necessary. A “slicer” takes care of cutting the 3D model into thin layers and gives the possibility of adjusting certain parameters such as wall thickness, infill density, or object orientation. This is a point not to be overlooked, because if the configuration is not good, the strength and precision of the final part will be too.
Online 3D printing makes these steps easier. A platform like Weerg takes care of preparing the 3D file so that it is correctly configured for their HP Multi Jet Fusion 5620 Pro printer. For certain parts, very high precision is required, CNC machining is then used as an alternative or complement to 3D printing. This subtractive process allows for impeccable finishes on metals and rigid plastics.
Choosing the type of 3D printing online
Not all 3D printing is created equal. Several technologies have emerged and coexist to meet specific needs. The choice depends on the material, the level of detail, and the part’s use. Multi Jet Fusion (MJF), often offered for inline 3D printing, is appreciated for its speed and the strength of the parts produced. It uses polymer powder fused layer by layer.
Fused Deposition Modeling (FDM), the more accessible method, works by fused deposition of filament. It is very suitable for making functional prototypes. Stereolithography (SLA) polymerizes liquid resin. It allows for a smooth finish with a high level of detail, making it ideal for 3D printing figurines, for example.
Post-processing, from finishing to shipping
Online 3D printing doesn’t stop once the part is manufactured. Before obtaining the final object, post-processing steps are necessary. First, the residue left by printing must be removed . Then, depending on the desired result, the part can be polished, sandblasted, o, even tinted.
Some materials, especially metals, also require treatments to enhance their strength. For example, anodizing aluminum is a common practice to extend its lifespan. Finally, before shipping, each part undergoes quality control . Dimensions, finishes, and strength: everything is checked to ensure a product meets the requirements of online 3D printing.
