3D Printing Rapid Prototyping
The thickness of the cross-section of the printer (ie, the Z direction) and the resolution of the planar direction, ie, the X-Y direction, are calculated in dpi (pixels per inch) or micrometers. The typical thickness is 100 μm, which is 0.1 mm, and some printers such as the ObjetConnex series and the 3D Systems' ProJet series can print a thin layer of 16 μm. The plane direction can print a similar resolution to the laser printer. The printed "ink drops" typically have a diameter of 50 to 100 microns. It usually takes hours to days to produce a model using traditional methods, depending on the size and complexity of the model. The use of 3D printing technology can reduce the time to several hours; of course, it is determined by the performance of the printer and the size and complexity of the model.
Traditional manufacturing techniques, such as injection molding, can produce large quantities of polymer products at a lower cost, while 3D printing technologies can produce a relatively small number of products in a faster, more elastic, and lower cost way. A desktop-size 3D printer can meet the needs of the designer or concept development team for manufacturing models.
The resolution of 3D printers is sufficient for most applications (curved surfaces may be rough, like jaggies on images), and for higher resolution items can be done by using the current 3D printer first Slightly larger objects can be shot and polished slightly to obtain a smooth surface "high resolution" item.
Some technologies can print on multiple materials at the same time. Some techniques also use support during the printing process. For example, when printing objects that have an inverted shape, some easy-to-remove items (such as soluble materials) are needed as supports.