Oh, for sure! Nowadays I have multiple spares and still use my broken bits if they are ever necessary
But I am pretty old and have a long long history of broken parts and McGuyver’d pieces 

Just last week I had one bowl break while being cleaned (scraped too hard) and it’s first replacement broke when I was dremeling its hole out because it’s hole was too hard for me to snap a load through
I need to make a run to Haight Street and pick up five or ten new replacements for safe keeping but I’m too tired from smoking all day to drive 20 minutes after a long day of work so… I am desperately low on replacements with just one or two RN 
3 Likes