Machining inside cylinder vs machining thread?
We are working with my kids on CAD project - precisely on a simple pressure valve for DIY confetti launcher. Yesterday question had occured: what is cheaper and easier for hand turner (alternatively cnc machine): to machine a nipple and then turn a thread on a cylinder or to machine nipple inside cylinder? How much bigger is cost of one of these options?
I prefer turning inside cylinder (no potential problem with sealing), anyway I'm asking this question to more experienced people.
PS: Size is showed in mm. We consider using metric thread.