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  How to use the   808nm hair removal device 1. Wipe the probe with alcohol cotton before and after the operation, and then wipe the probe with a cotton pad or soft cleansing cotton; 2. When the instrument is turned on, first turn on the dot switch, and then turn on the key switch. 3. Wait for more than 5 minutes to enter the first interface after the first boot, and then press the Enter key to enter the system. After the first boot, you only need to wait for 1-2 minutes, and then press the Enter key to enter the system. 4. When entering the system, the machine needs to run the water circulation cooling system to cool the treatment head (with water droplets condensing), wait for about 5 minutes and then press the ready to operate for the guests. 5. After waiting for 5 minutes, the customer‘s hair can be removed. Any part of the operation must be shaved. It does not need to be very clean. It is best to leave about 1mm of stubble to absorb light and the effect is good; Shave the hair com

 3D printing and CNC machining are relatively common production processes in the field of precision machining. There are similarities and differences between the two. For example, CNC machining is more suitable for mass production. It can create many products in a short time. 3D printing needs It takes hours to create a product. Compared with 3D printing, CNC machining has the following advantages: Surface treatment advantage, CNC provides better surface finish than 3D printing because the material does not deform during processing. 3D printing has a poor surface finish and the material is warped because the material is layered heated plastic. Prototype integrity is improved, CNC machines do not heat the material and modify it, the material remains stronger and has better structural integrity than a 3D printer, which must heat the material to build the intended product. 3D printers may also need to add foreign matter to the mix to make prototypes, which CNC machines do not. CNC machine