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How to set individual trace solder mask windows in DXP? [Copy link]

    The circuit needs to drive 8 relays. When multiple relays are closed and turned on, the current increases greatly. To ensure the actual effect, while widening the current line, it is hoped that the solder mask layer on the current line - the green oil layer - can be removed. After the board is made, tin can be added to it to thicken the line, so that a larger current can pass through. 1. How to remove the green oil of individual lines in DXP? The method is as follows: A. Draw this line in the toplayer (or bottomlayer depending on the layer where the preset line is located); B. Draw a line that coincides with this line in the topsolder (or bottomsolder) layer. This line is drawn with a non-electrical line. The reason is as follows: the soldermask layer is a negative film. There is no green oil where there is something, and there is green oil where there is nothing. So if there is no green oil, just draw something on this layer. 2. How to open a skylight in a large area of solder mask in DXP? To open a window on the solder mask layer, you can use the copper-clad tool to drag out the corresponding graphics in the topsolder layer (or bottomsolder layer) where you need it. Although it also uses the copper-clad tool, it is not copper-clad. It just means that the circled part should not be soldered, and there is no concept of network. Supplementary content: 1) Topsolder is the soldering layer. To put it simply, there is no green oil where there is this layer. If there is a circuit, it will be sprayed with tin. Where there is no circuit, it is a bare board. Therefore, many people use this layer in combination with the circuit layer, which can be used for tinning. 2) Toppaster is the steel mesh layer. This is a popular saying. When you hand it over to the steel mesh factory to make the mesh, you need to hand it over to him. Common mistakes: 1) Use the toppasete layer as the solder layer, and draw a paseter layer where you want to tin. As a result, there is no window because the pasete layer is used. 2) Use the solder layer as the circuit layer and the soldering layer together, thinking that there are circuits and windows where there is this layer. This is very wrong. This content is originally created by EEWORLD forum user Zhongxinhua. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

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It is a common mistake for beginners to use the toppasete layer as a solder layer.  Details Published on 2019-5-22 14:06
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It is a common mistake for beginners to use the toppasete layer as a solder layer.
This post is from PCB Design
 
 

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