Polyjet is one of the advance 3d printing technology which can create ultra smooth and high precision components of any complexity. Polyjet technology can combine a variety of photopolymer according to required concentration to achieve the desired properties and strength of the product with polyjet 3d printing technology it is even possible to print human tissues. it can produce thin walls and complex geometries using the widest range of materials available with any technology.
Since this is one of the advanced additive manufacturing technology which is capable of printing multi-color products this technology is best suited for the complex products which demands aesthetics and also precision. The technology works similarly to traditional inkjet printing, but rather than jetting ink onto paper, a print head jets liquid photopolymers onto a build tray layer by layer where each droplet cures in a very ﬂash of UV light
Wall thickness depends mainly on the type of material you plan to use to 3D print. The recommended smallest wall thickness is between 0.04" and 0.06." The latter is considered the best choice for most of the PolyJet projects. You must be aware that the product could be fragile if you use small wall thickness. So it would be best to consider the right wall thickness for your product's future use.
With any hole, ensure a correct fit with the fasteners or pins you use. For PolyJet 3D printing, the best option would be oversizing the hole or under-sizing the pin by 0.005" that can ensure clearance. Due to tolerance stacking, it is recommended to consider a higher clearance for larger parts. The design of the pins highly depends on the product's future use. Instead of fragile small pins, you can use thick pins to allow more strength and stability in the product and help with reliability and longevity. To enjoy the best results understand the strength type your products need to complete their function.
Fused Deposition Modeling (FDM) also known as Fused Filament Fabrication (FFF), is a quick and cost-effective way of producing parts out of thermoplastics. FDM is the most widely used 3D printing technology. It is suitable for the production of functional parts, Concept prototypes, form and fitment prototypes, Batch production.
SLA is best suited for applications where high detail or high accuracy is
required. Create high fidelity prototypes/
functional parts for medical, dental, Automotive, jewelry, casting, etc. Tough
Resin(Elastomers), High-Temperature Resin, are some of the most used materials
for SLA 3d printing.
Selective Laser Sintering (SLS) uses synthetic thermoplastic polymers, such as nylons. SLS is suitable for affordable batch production, complex geometries, or for producing strong parts. Parts produced using SLS are porous, and have decent mechanical strength. PA2200 is the most widely used material for this process.
Direct Metal Laser Sintering (DMLS) and Selective Laser Melting (SLM) are both used in the production of metal parts with excellent physical and mechanical properties. Suitable for Complex geometries of metal, creating Lightweight metal parts. A variety of superalloys/metals can be 3d printed using this process.
One of the fastest 3D printing technology, Polyjet is suited for realistic prototypes, and if high accuracy, smooth surface finish are important requisites. Polyjet can print in multiple materials and colors. Polyjet is mostly used for concept prototypes, not suitable for engineering applications or functional parts.
Multi Jet Fusion (MJF) is one of the fastest processes producing quality plastic parts with detailed features. The parts printed in MJF exhibit consistent mechanical properties, low porosity and are usually light grey in color. It's suitable for small batch production as an alternative to injection molding.