What a mess, what am I doing wrong?

I have done a fair share of cast iron enough so it took two years to stop rusting my shirts from sweat. I used a slow enough speed and feed to not make spitting iron hot enough to burn. I used a slightly angled carbide with a small radius the carbide was made for cast iron. For finishing I'd use a high speed steel tool like momax. You have to adjust the feed to the finish no book or calculator can adjust it , I really enjoyed machining cast but I hated the after effects brown rusty skin and nose full of black dust. Besides the clothing. Your learning not doing wrong keep with it flat carbide tools don't cut cast they break it , it must have relief.
 
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