![]() ![]() Structured light scanners use ultra-high resolution cameras to create a massive point cloud of data. This has been an advantage for customers looking to preserve objects without damaging them. Our scanning work-flow uses a non-contact process so that parts do not need to be modified in any way. We provide precision structured light scanning services for 3D scanning and object digitization. Often a depth of only a centimeter or two of liquid photopolymers is adequate to print tall, thin structures. The advantage of this bottom-up mode is that the build volume can be much bigger than the vat itself, and only enough photopolymer is needed to keep the bottom of the build vat continuously full of photopolymer. The UV laser then writes the second-from-bottom layer, the vat rocks again, the newly hardened material peels again, the build platform is raised again, more liquid photopolymer flows in, and the process repeats for each layer in the desired part. Then the vat is “rocked”, flexing and peeling the bottom of the vat away from the hardened photopolymer the hardened material detaches from the bottom of the vat and stays attached to the rising build platform, and new liquid photopolymer flows in from the edges of the partially built part. ![]() The UV laser then writes the bottom-most layer of the desired part upward through the transparent vat bottom, and the photopolymer hardens selectively where the laser strikes. Form2 printers start a print by lowering the build platform to touch the bottom of the resin-filled vat, then withdrawing upward one layer thickness. Stereolithography (SLA: also known as Optical Fabrication, Photo-Solidification, Solid Free-Form Fabrication, Solid Imaging, Rapid Prototyping, Resin Printing, and 3D printing) is a form of additive manufacturing technology used for creating models, prototypes, patterns, and production parts in a layer by layer fashion using photopolymerization, a process by which light causes chains of molecules to link together, forming polymers.įormlabs Machines print objects from the ”bottom up” by using a vat with a transparent bottom, and focusing an ultraviolet (UV) laser upward through the bottom of the vat. Once a layer is printed, the build platform moves vertically along the Z axis until the last layer is printed.Īn average sized model with a 0.025 mm layer height can have several thousand layers and require 12 or more hours to print. Once received by the printer, each contour is filled in with solidified resin as it is cured with UV light from a laser in the base of the machine. Each slice is sent to the printer wirelessly. Once the operations are completed to the model, and the print command is issued, PreForm generates a series of closed 2D contours that reflect the options chosen by the user. Layer heights of 0.050 mm and 0.025 mm provide greater levels of detail with a corresponding increase in print time. Choosing a layer thicknesses of 0.100 mm provides a faster though less precise build. The Z value is the slice height for each layer as the build platform moves vertically during a print. The machine needs to be fed a series of closed polygons corresponding to a specific Z-value. Print time is determined by printer model, resin type and Z height. Depending on the type of resin used, print Z thickness can be chosen from one of three categories. PreFrom allows for the selection or resin type and Z height (resolution). The options chosen can be seen automatically on screen. Most times these repairs are sufficient to produce a watertight model, but if unsuccessful the print can’t be sent to the printer.Ī successful mesh is visually presented within PreForm and the user can scale, orient, position and generate support for the model. If there is an issue with the mesh PreForm alerts the user and tries to repair it by cleaning up small discrepancies like filling holes or moving vertices so they coincide. The STL file is brought into the app as a mesh with scale defined by the software that created it. It features a very simple to use interface and prepares files for Form2 printers The Formlabs machines used by FILE2FAB are 3D printers that can build any volume shape using a series of slices created with the Formlabs PreForm app. ![]()
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