The researchers put syringe pumps on top of the rising platform for this new technique, known as CLIP injection, or iCLIP, to add additional resin at strategic locations.
“Resin flow in CLIP is a very passive process – you just pull the object up and hope that the suction can get the material where it’s needed,” says Gabriel Lipkowitz, Ph.D. . mechanical engineering student at Stanford and lead author of the paper.
“With this new technology, we are actively injecting resin into areas of the printer that need it.”
Well-known structures of several nations
With iCLIP you can print with different types of resin at different stages of the printing process by injecting more resin individually. Each new resin just needs its own syringe.
Three separate syringes, each filled with differently colored resin, were used by the researchers to test the printer. They managed to print models of well-known structures from several nations in the colors of each nation’s flag, such as Independence Hall in red, white and blue from the United States and Saint Sophia’s Cathedral in blue and yellow from the United States. ‘Ukraine.
“The ability to make objects with varying materials or mechanical properties is the holy grail of 3D printing,” says Lipkowitz.
“Applications range from highly efficient energy-absorbing structures to objects with different optical properties and advanced sensors.”