I would guess that block would take around 45minutes to an hour. The maximum cut you can take with an end mill under 3/4" is 1/2*diameter wich would be .5mm. I usually take it a little under that to be safe.
The IPM I will have to figure out later, itll be around 2-6IPM.
Bigben, I hope those end mills are carbide! otherwize the feed will be like 1ipm and .01" depth cuts.
Jon
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