Cutting Mild Steel

[Cadefoster84 (Chris H)]

I have some .125" thick mild steel sheets im hoping to cut a few basic shapes out of with my s4 pro. Doable? Any tips or tricks?

[HeuristicBishop (Tyler Sowers)]

There are some older posts regarding steel. Should be doable.

Here’s a link: Anyone have feeds and speeds for mild steel facing ops?

And another (Rich knows his stuff):

Question about milling steel

I often cut steel on the Shapeoko and in fact, I spent most of the day today cutting some 1018 low carbon steel (Ref 1.25 dia). I was boring 5/8" holes in 1.0 inch long slugs and milling a 7/8 C’Bore 1/8" deep. Major cutting tool manufacturers will list the cutting rates for their tools for a general range of material. (HSS, Carbide and Coated Carbide, etc.) For example, 303 Stainless steel my reference chart says 150-200 SFM. I ALWAYS try use the lower number to start. So using an onlin…

Mind your surface speeds and your specific steel, expect to burn through some tools while figuring it out, and prepare yourself for one heck of a time cleaning up chips after cutting.