FIrstly this is an opinion.
Secondly i have done the course you are currently studying.. also i did it while in a work place and operating 5 asix milling & millturn machines and had the opertunity to considerably alot more processes than you probably currently have.
Now, if you plan on making a frame for your ONC project, let me say. Good luck.
Making the frame in throry would be easy. But to pass the course in question, I cant see how it would satisfy the paperwork over the whole course of he year.
My project was was actually on developing and installing a new manufacturing Jig for my machine for when we produced a particular product. The hardest part was compiling the data for the evidance and providing usefull and relevent information to satify the grading module. Pictures, Quotations for steel, Testing figures, technical drawings, graphs etc etc.
Should you require any help on the course, just ask, as i still (Paper copies) have all my work saved. I walked away with a distinction in my work based project and a Double distinction with distinction for the overall year. I also got the same grade in my HNC and passed with merit for my HND. So im not just chatting shit.
Doing a frame for a UNI project is probably alot better idea..as you can follow everything Ash has said above. But for ONC.. i think it would be trying to much and dumb it down.
That being said,
Good Luck!