The rapid prototyping business is growing quickly, and there are new kinds of technology all the time. One of the newest types of 3D printers is called PolyJet, and it is made by a firm called Objet in Israel.
Basic Operation
PolyJet printers, like many 3D printers, work by building up models one layer at a time. This is called additive manufacturing. A spirited set of heads sprays out fine droplets of photopolymer liquid at the right positions in each layer. The droplets are then hardened roughly instantaneously by an ultra-violet lamp. This results in a model with high precision and accuracy, with very little "stair-stepping" on the vertical axis because the layers are so thin.
Best Laser Printer
Materials
There are many kinds of materials that can be used with these printers. One of the most beloved ones is called VeroWhite FullCure830. It is a rigid, opaque white material that is nearly as strong as base plastics. There are also other colors, both opaque and transparent, offered, as well as rubber-like materials using the name Tango.
Strengths
The strengths comprise fine details, quick printing, and plane surfaces that can legitimately be sanded, painted or drilled. These features allow the models to be used for form, fit, and light functional testing. Tiny moveable features are possible, such as wheels and gears, which is something that other processes may not do as well. A painted PolyJet model looks great, which is useful for marketing presentations. The models can also be used in a variety of other applications, along with mold making and vacuum forming.
Weaknesses
One of the biggest drawbacks is its low temperature resistance. If the ambient temperature exceeds 130 degrees Fahrenheit, the model can start to warp. This makes it a poor candidate for outdoor and automotive usage. However, indoor usage with light to medium loads located on the models should work fine. For higher-temperature applications, an Abs plastic using the Fdm process is a great choice.
Comparison With Stereolithography
Stereolithography (or Sla) remains one of the most beloved forms of rapid prototyping. It legitimately uses a process that is very similar to PolyJet. They both use photopolymer liquids for the models. However, stereolithography uses lasers to cure the material rather than ultra-violet lamps. Both processes result in similar levels of precision and accuracy, but PolyJet typically creates a outside that is smoother right out of the printer.
Pricing
Pricing for PolyJet models varies greatly, depending on which firm does the printing. This means that it can cost more or less than stereolithography models. Small models can be purchased from rapid prototyping houses for as little as but larger models can legitimately be in the hundreds of dollars. The best thing to do is shop around by getting quotes from a few places to find the bottom price. Make sure to check the lead times required by these fellowships too.
Conclusion
PolyJet printing has many great advantages, but make sure you know the strengths and weaknesses of the various forms of 3D printing before you make a decision on how to have your parts made.
Thanks To : printer ink toner http://bestslrcamera.camera-onlinesite.com/
ไม่มีความคิดเห็น:
แสดงความคิดเห็น