Brsanko i admire your enthusiasm, i too used to get fed up with people telling me that is too difficult and requires skills etc. My first CNC machine was not built to work just to satisfy me that it could be done. After that i invested in a lot more kit time and energy amongst my very busy schedule. I cast most of my own lump material for machining in aluminium. Cast iron is a problem for me as most things in iron i would like to use is way too big to handle. Don't be put off but just acknowledge what they are saying as it is advice and at the end of the day you do not have to take it?

Don't forget the only dumb person is the ones that don't not ask the dumb questions and get no where. At the same time listening about others mistakes could save you a lot of heartache.

Don't give up or take things to heart, if people did not try we would not get anything done in this world :-)

PS

My first machine worked better than i expected and it made parts for my second one so goes to prove sometimes just doing can be the best lessons. I could cost a lot more buying proper training.