Four answers about the feature that decides function, and the tool returns the route we would propose, the measurement question it raises, and an honest decline where the work sits outside our stated experience. It is a routing guide, not a quotation.
Grades listed here are the families Zhenling states experience in. The last two are listed so the tool can say no.
Delivered hardness changes the route more than geometry does.
Enter the width of the feature, not the size of the part. 1000 µm = 1 mm.
![Shop-Floor Carbon Steel CNC Machining Guide [2026]](https://zhenlingmetal.com/wp-content/uploads/2026/08/carbon-steel-cnc-machining-handbook-r2-featured-150x150.png)
