① SLA technology appeared early, and after years of development, the technology is highly mature.

②The printing speed is fast, the photosensitive reaction process is convenient, the product production cycle is short, and no cutting tools and molds are required.

③The printing accuracy is high and it can print prototypes and molds with complex structures and shapes or that are difficult to produce with traditional technology.

④The upper software has complete functions and can be operated online and remotely controlled, which is conducive to the automation of production.

①SLA equipment is generally expensive and has high usage and maintenance costs.

② It requires precise operation of toxic liquids and has strict requirements on the working environment.

③ Due to material limitations, most of the materials that can be used are resins, which makes the strength, stiffness and heat resistance of the printed products very limited, and is not conducive to long-term storage.

④The core technology is monopolized by a few companies, and the technology and market potential have not been fully exploited.

①The molding speed is faster. Since LOM is not additive manufacturing in nature, it does not need to print the entire section. It only needs to use a laser beam to cut out the outline of the object, so the molding speed is very fast. Therefore, it is often used to process large parts with simple internal structures.

②The model has high precision and can be printed in color. At the same time, the warpage deformation caused by the printing process is very small.

③The prototype can withstand temperatures up to 200°C and has higher hardness and better mechanical properties.

④ There is no need to design and make a support structure, and cutting can be performed directly.

⑤The price of raw materials is low, the prototype production cost is low, and it can be used to make large-sized parts.

① Due to limitations of raw materials, the tensile strength and elasticity of molded parts are not good enough.

②The printing process involves laser loss, requires a specialized laboratory environment, and has high maintenance costs.

③ It cannot be used directly after printing, and the waste must be removed manually, so it is not suitable to build parts with complex internal structures.

④The post-processing process is complex, and the prototype is prone to absorbing water and swelling, and requires moisture-proof and other treatment processes.

⑤The Z-axis accuracy is determined by the material and glue layer thickness. Actual printed products generally have step textures, making it difficult to directly construct parts with fine shapes and multiple curved surfaces. Therefore, surface polishing and other treatments are required after printing.

(1) It does not use a laser system and is simple to use and maintain, thus reducing maintenance costs to the lowest level.

(2) There is a wide range of molding materials, and all thermoplastic materials can be applied.

(3) Environmentally friendly, there is no chemical change during the production process, and no granular dust is generated.

(4) The equipment is small in size, easy to transport, and suitable for office environments.

(5) The utilization rate of raw materials is high, and waste materials can be recycled, reprocessed and recycled.

(6) Post-processing is simple.

(7) The molding speed is faster.

(1) Since the movement of the nozzle is mechanical movement, the speed is limited, so the molding time is longer.

(2) Compared with the light-curing molding process and the three-dimensional printing process, the molding accuracy is lower and the surface has an obvious step effect.

(3) A support structure is required during the molding process. It is difficult to remove the support structure manually and affects the surface quality of the part.

(1) It does not use a laser system and is simple to use and maintain, thus reducing maintenance costs to the lowest level.

(2) There is a wide range of molding materials, and all thermoplastic materials can be applied.

(3) Environmentally friendly, there is no chemical change during the production process, and no granular dust is generated.

(4) The equipment is small in size, easy to transport, and suitable for office environments.

(5) The utilization rate of raw materials is high, and waste materials can be recycled, reprocessed and recycled

(6) Post-processing is simple.

(7) The molding speed is faster.

(1) Since the movement of the nozzle is mechanical movement, the speed is limited, so the molding time is longer.

(2) Compared with the light-curing molding process and the three-dimensional printing process, the molding accuracy is lower and the surface has an obvious step effect.

(3) A support structure is required during the molding process. It is difficult to remove the support structure manually and affects the surface quality of the part.

Easy to operate process

High material utilization rate

No support structure required

The mold is extremely strong

Prototyping is easy to deform

Complex post-processing requires preheating and cooling

Rough and porous molding surface

polluted environment