Anyone got any cheat sheets on speeds on different types of wood that match the machine? Just trying to get prep as much as i can before it shows up:)
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I’ll see what I can find at the house later but for now I will tell you that feeds and speeds are as much art as science.
I’ve had to adjust between two sheets from the same vendor!
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Thank you for looking. even if i can get a good idea on a idea of a starting point, start speed/ rpm ect… lumber type. Bit type for what type of cut as well:) i know i dont ask much:) lots of learning i have to do…
I thought I had some real-world numbers from when I was using the Handibot, but it looks like all the updates to Vcarve has wiped them out. In some ways, that is just as well as this will be a new machine and have its quirks.
I will give you some good reading and some personal advice, though.
Here is a good primer article:
Now personal stuff I have learned:
It is okay to make shallow cuts, CNC is patient, better to make four passes instead of three and not get as good of a product.
Start slow, but not too slow. Chip load is about sound and looking at the sawdust. If you are making dust instead of chips and making burn marks, you are way too slow. If things sound like hell and the router is bogging, you are way too fast and/or deep.
Find that spot where everything sounds good, and you are leaving shavings.
For most wood with a two-flute 1/4 end mill I’d use 60 ipm as a starting point with no deeper cut than 1/4" per pass.
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I made an Excel application that helps with the feed and speed calculations. Version 1.0 has a chipload chart for various materials and the tool will calculate the feed rates and RPM based on your selection. I am working on an advanced version that will include the Amana Tool database to select from and the tool will configure the speeds and feeds from that database. https://edwoodcrafting.com/2020/07/18/cnc-explorer-1-0-application/
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