Honestly I kinda love my old stiff drawings. They show how much I cared about getting it right back then. That careful energy is its own cool thing.

Actually, the friend might have a point though. Spending that much on groceries could mean you're buying a lot of processed stuff or wasting food, which isn't great. It's not just about saving cash, it's about being smart with what you buy. Maybe they were trying to give a helpful nudge to check your habits. Saving money is good, but how you save it matters too.

Remember the tooling itself can be the wild card. I had a boss push for high feed rates on a brand new endmill, saying the coating could handle it. He didn't know the shop guy had been resharpening the old ones on a bench grinder... the geometry was totally off. So the 'good' advice was based on a tool that didn't exist anymore. Sometimes the old rules fail because the tools on the floor aren't the ones in the catalog.