A little TOO freelance..............1 Picture the part in your mind. (in this case main bearing housing)
2 Make rough sketch with some basic dimensions.
3 Mark out on some stock bar.
4 Hacksaw and tidy up with mill.
5 Drill, tap, make studs and assemble.
6 Realise no allowance made for thickness of bearing brass so not enough metal in cap.
7 Bin it, make new sketch with ALL dimensions and make another one.
What a plonker