电路板在电子制作中几乎成了不可缺少的。可以用油漆、涂料绘制线路,然后用三氯化铁腐蚀方法制板。但绘制的电路边缘不齐整,修整也困难。还有一种方法是刀刻法。在敷铜板上画好电路然后用刀刻透铜箔,揭去不用的部分留下所需电路。这种方法在刀刻时很吃力,较复杂形状就很难刻顺滑。 Circuit boards have become almost indispensable in electronic production. Can paint, paint lines, and then use ferric chloride corrosion method plate. However, the edge of the circuit is not drawn, finishing is also difficult. Another method is the knife engraving method. Draw a good circuit on the copper plate and then use a knife to engrave the copper foil and remove the unused parts to leave the desired circuit. This method is very hard in the knife, the more complex shape is hard to engrave smooth.