3D printers and problem in our world with solution

What is 3D printer? 

A 3D printer is a device that prints three-dimensional objects. The 3D printer prints the object with different materials (such as plastic or metal). They also use different techniques. The creation of a 3D-printed object is achieved using additive processes. In an additive process, an object is created by laying down layers of material until the object is created. Each of these layers can be seen as a thinly sliced cross-section of the object.3D printing enables you to produce complex shapes using less material than traditional manufacturing methods. (In short 3D printer print 3D designs into 3D models). The first 3D printer, which used the stereo lithography technique, was created by Charles W. Hull in the mid-1980s. It was a very expensive commercial technique, with machines costing in the five and even six figures, but recent years have seen the advent of desktop professional 3D printers costing a few thousand dollars, as well as some systems that start well under a thousand dollars. if you have any problem understanding "click here" .

How does the 3D printer work?

as we know that 3D printer print three-dimensional objects. It all starts with a 3D model. You have options to create one or download it from a 3D library.to print these objects we need software there is much different software available(from industry grade to open source).

their are two methods for 3D printing:

 Additive manufacturing:

Additive manufacturing builds up 3D objects by depositing and fusing 2D layers of material. This method has almost no startup time or costs, making it ideal for prototyping. Parts can be made rapidly and discarded after use. Parts can also be produced in almost any geometry, which is one of the core strengths of 3D printing.

One of the biggest limitations of 3D printing is that most parts are not fully dense, meaning they usually lack the material and mechanical properties of parts made by subtractive . Due to fluctuations in cooling different prints of the same part are also prone to slight variations, which puts limitations on consistency and repeatability.

Subtractive manufacturing:

Subtractive manufacturing, such as milling and turning, creates objects by removing material from a block of solid material

Almost any material can be machined in some way, making it a widely used technique. Because of the amount of control over every aspect of the process this method is capable of producing incredibly accurate parts with high repeatability. Most designs require Computer Aided Manufacturing (CAM) to plot customized tool paths and efficient material removal, which adds setup time and costs, but for the majority of designs, it’s the most cost-effective method of production.

The major limitation of subtractive manufacturing is that the cutting tool must be able to reach all surfaces to remove material, which limits design complexity quite a lot. While machines like 5-axis machines eliminate some of these restrictions, complex parts still need to be re-orientated during the machining process, adding time and cost. Subtractive manufacturing is also a wasteful process due to the large amounts of material removed to produce the final part geometry.

Software's for 3D printing:

For the beginner the best software is Tinkercad 

This is a very basic software it is free and it work on your browser. It very easy to use. User can design any 3D object which they wish to print.

For professional use the best software is blender

this is a very professional software for 3D printing. Blender is a free and open-source 3D computer graphics software tool set used for creating animated films, visual effects, art, 3D-printed models, motion graphics, interactive 3D applications, virtual reality, and, formerly, video game.

For advanced user their is BRL-CAD

First of all its free to download. This open-source software is an advanced solid modeling system with interactive geometry editing. It is apparently used by the U.S. military to model weapons systems, showing that it is quite dependable but also very advanced. BRL-CAD offers a high level of precision due to its use of specific coordinates to arrange geometric shapes.

TYPES OF 3D PRINTERS

• 1.Stereo lithography (SLA)
• 2.Selective Laser Sintering (SLS)
• 3.Fused Deposition Modeling (FDM)
• 4.Digital Light Process (DLP)
• 5.Multi Jet Fusion (MJF)
• 6.Polyjet
• 7.Direct Metal Laser Sintering (DMLS)
• 8.Electron Beam Melting (EBM)

EXAMPLE:

1.

Stereo lithography (SLA)is the industrial 3D printing process. SLA printers excel at producing parts with high levels of detail, smooth surface finishes, and tight tolerances. The quality surface finishes on SLA parts, not only look nice but can aid in the part’s function—testing the fit of an assembly, for example. It’s widely used in the medical industry and common applications include anatomical models and microfluidics. 

2.

PolyJet is another plastic 3D printing process, but there’s a twist. It can fabricate parts with multiple properties such as colors and materials. Designers can leverage the technology for prototyping elastomeric or over-molded parts. If your design is a single, rigid plastic, we recommend sticking with SL or SLS—it’s more economical. But if you’re prototyping an over-molding or silicone rubber design, PolyJet can save you from the need to invest in tooling early in the development cycle. 

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problems in our world with solution

Problem identification:

Everyone in their lifetime has thought of doing a business of their own and also due to covid-19 people who lost their jobs are also interested in doing business.

As we all know to start a business there are two main factors

1. idea

2. investment

Many business ideas cannot make it to a running business due to the issue of investment.

In times of covid, the owners of businesses were unable to earn profit from their business which results in downsizing and even complete business shutdown.

Problem statement:

To solve this problem, I think there should be a website that will allow people to upload their business ideas and then the investors will choose business ideas according to their liking and contact the person and turn their idea into a business with their investment.

Public suggestions:

you can give your suggestion on this form

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suggestions form

STATS FROM PUBLIC: