I am wondering how other people explain surface footage and velocity when training?

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I am wondering how other people explain velocity and surface footage when training?

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I compare it to different size tires. To go 60mph for a large diameter wheel will require fewer revolutions than a smaller diameter tire.

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I use the same kind of concept but refer to the diameter of the part or tool when explaining SFM to anyone. So no matter what it may be tool or part, it is about how many RPM it takes for that particular diameter to be in order to go a certain SFM.

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Hello all!
To go more in depth on SFM your SFM goes hand in hand with your IPR in order for a CNC Lathe to convert it to IPM and so you can calculate your IPM on a CNC Mill or a CNC Lathe if you are programming in IPM based on a certain IPR. The SFM is used to calculate your RPM your tool or part diameter. On a CNC Lathe if you are using G96 Constant Surface Feet Minute the machine regulates the RPM to match the diameter for which the tool is at and then the machine regulates the IPM of the tool based on the IPR it is set to at that moment. This helps maintain a clean and stable surface finish. On a CNC Mill it calculates the RPM of the diameter of your tool then you can calculate your IPM based on your IPR which is calculated by the IPT on a multi tooth cutting tool. Then you can optimize your IPR/IPT to achieve a certain surface finish. Hope this is helpful in explaining SFM.

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