The Complete Process of Making Sheet Metal Prototypes

A sheet metal prototype is a prototype of a product which is used to test the design and the composition of the actual product. A prototype is a model which is similar to the original product, but differs in various factors and it is not the original final product. In the sheet, the metal prototype is a metallic model or replica of the original one. The first step for making a product is to make a prototype and check about its requirements and various other complications. The sheet metal prototypes are made with customer friendly designs and there is no compromise with the quality of the product. The customers can take the advantage of the sheet metal prototype to carry desired experiments on the prototype.

Sheet Metal Prototype

1. Methods of Sheet Metal Prototypes

Stamping is one of the methods for sheet metal prototyping. It is a traditional method for the sheet metal prototyping. It is the first stage and the methods which are required in this requires the use of specific software. The use of three-dimensional simulation is also done for best results. The second process for sheet metal prototyping involves methods such as punching, blanking, and bending. The use of different technologies is required and the stages are carried out systematically. The process of computer-controlled uses machines like 3D printers is used to develop a prototype. There is one more process for sheet metal prototyping called increment sheet metal forming which uses a tool to carry the process of sheet metal deformation which is carried out on the milling machine. The process of hammering is also carried out for hammering the sheet into a three-dimensional shape.

2. Advantages

There are many processes in which the sheet metal can be manufactured as per the needs of the customers. With the help of these methods, the steel metal prototyping can be done in a few hours rather than the old traditional methods which used to take a lot of time, even weeks. The new methods offer flexibility in the amount of the material produced. The production is mostly in large numbers so it takes low costs for the production of the sheet metal prototype. The customers are satisfied with the customized orders of the material.

3. Applications

The various applications in today’s world for sheet metal prototyping are significant and on a large scale. The sheet metal prototype can be used to make robots in the robotics industry. The design industry, as well as the transportation industry, can make use of the sheet metal prototype for the ease and convenience. The consumer products need sheet metal and the bio-medical devices industry as well uses the sheet metal prototypes. There are the needs of the customers when they want to buy semi-finished or finished products those are also provided to the industries. Sheet metal prototyping is very useful and is used in various industries.

The advancements in the sheet metal prototyping have moved the sheet metal prototyping process into the direction of more precision. The accuracy has improved with the use of high as well as low tolerances. There are many rapid prototyping companies in China with the help of which we can get the sheet metal prototypes made in China.

Original source is from http://www.rapidprototypechina.com, which is a professional rapid prototype manufacturer in China.

(Source from China rapid prototype company blog)

The quality difference between CNC machined prototypes and 3D printed prototypes

There was a surge in the popularity of 3D printing in the past few years and everyone wanted to get a 3D printer for themselves. 3D printing is an additive manufacturing process where models are created into a three-dimensional object from a digital source file. The basic principle of operation in 3D printing is that layers are stacked upon each other till we achieve the desired result.

cnc machined prototype

But if you are looking for production of any functional parts for yourself, then there is yet another manufacturing technique which has been employed in business for many years now. It is CNC. Computer Numerical Control or CNC is a contradiction to the process of 3D printing. This is a subtractive manufacturing technique. This means that we start with a block of metal and keep subtracting its volume till we reach our desired shape. This is achieved using various tools and cutters.

If you are looking for manufacturing of parts of any kind and cannot decide which prototyping process is suited best for you, then this article helps you with your problem. We will discuss the various differences in quality of materials manufactured from a CNC machine and a 3D printer.

1. CNC machines are adept at producing a high dimensional accuracy and produce parts which possess better mechanical properties. The cuts are cleaner in the case of CNC because most of these machines employ the use of Laser cutters which provide very accurate cuts.

On the other hand, 3D printing also provides with good dimensional accuracy, but they differ from what CNC machines produce. In the end, it all depends on the industrial applications of the manufactured prototypes.

2. The materials used in both the processes are different too. The preferred material with CNC machines is almost always metals, though it can also be used with thermoplastics and other materials.

The preferred materials in 3D printers are mostly plastics and metals are usually not used with them. Basically, the materials which are very difficult to machine by the CNC machines are used with 3D printers.

3. The complexity in the design of models also plays a differentiating role in both of these processes. Usually, CNC machines are not preferred when we have obtained complex designs of a prototype. It can take a toll on the structure and the quality of the prototype.

This is where 3D printers prove their usefulness. No design is complex for them and they can produce highly complex structures.

4. The prototypes printed by a 3D printer can sometimes give rough curvatures. This is due to the fact that the prototype is built from layer after layer and when there is a curvature to build, layer lines may be visible which gives a rough look. This, however, can be corrected in the post-processing, but it is easily visible in the raw production of the prototype.

On the other hand, cuts from a CNC machine are clean and precise and does not require much post processing to smooth out uneven surfaces.

If you are also looking to manufacture prototypes for your use and cannot decide how to do this, then I strongly recommend you to visit rapid prototyping company in China. Chinese prototype manufacturers are devoted to turn your conception into reality and offer cutting-edge prototyping services and tools.

For more information, please check out http://www.rapidprototypechina.com.

(Source from China rapid prototype company blog)

How To Make Mass Rapid Prototypes Via Vacuum Molding

Vacuum molding is a copying technique that produces master model using stereolithography or laser sintering with a surface finish that is high in quality. A silicone mold is the produced by casting silicone round the master model under vacuum so that air bubbles are eliminated and avoided. It is then cured and the silicone cut to pre-defined planes before the master model is removed leaving cavity for copy making.

vacuum molding rapid prototypes

This is among the best rapid prototyping techniques especially for small series functional plastic parts. The fast production of vacuum casting has made it very popular and you can also trust in the quality of the prototypes or even end use products. Compared to injection molding, parts achieved by silicone molding are just as high in quality. The technique also offers varying finishing degrees so the parts meet your exact requirements. You should consider this kind of production method when you are looking for cost effective fast production for prototype series, conventional plastic manufacturing, multi material parts and even large parts production.

The advantages of vacuum molding

Apart from the quick turnaround and cost saving nature of vacuum molding, you will also stand to enjoy a number of other benefits which include the following:

• Reduced costs on equipment for large parts since high tonnage presses is not required as it would be the case with injection molding


• Highly detailed products in varying sizes


• Flexible tooling designs


• A huge range of colored, paintable and textured plastics


• Visually appealing prototypes


• Customizable appearance and material to suit personal preferences and requirements

Vacuum molding mass rapid prototyping tips

Whether you are in the packaging, electronic, retail or consumer product industry or any other therefore, you can use vacuum molding effectively to produce mass prototypes. The fast turnaround of the process makes it very easy for the mass production to be achieved and you can also produce as many prototypes as you need at very low costs; you only need to make the right decisions.

Tip 1 – Start your mass production by looking for a rapid prototyping company that you can trust for quality and delivery of services. A company that is experienced and offering a wide range of services as far as rapid prototyping is concerned will have an easy time meeting with your project requirements.

Tip 2 – Since you will be mass producing your parts, ensure that you counter check the design. If need be, get a professional designer to help with the process so that you do not end up producing tens of prototypes that are not as functional or appealing as you needed.

Tip 3 – Choose the right wall thickness for your parts. The ideal thickness should be at least 0.75 to ensure molds are properly filled. Thicknesses of up to 1.5mm are most suitable so do your selections wisely for best results.

Tip 4 – Even though the vacuum molding is cost effective, know exactly how many parts you wish to have mass produced and how much it is going to cost you. Choose production sizes meeting your needs and at a cost you can comfortably afford.

A good rapid prototyping supplier in China should not only offer you the best production options for your parts but should also be able to handle the production size of your project. You can enjoy cheap rapid prototyping services in China without compromising quality through techniques such as vacuum molding.

For more details, please check out http://www.rapidprototypechina.com.

(Source from China rapid prototype company blog)