While collet adapters aren’t optimal, they aren’t impossible. And imo the added challenge might make for a good lesson or two. Let’s try what Winston calls, a scientific approach.
I measured total indicated runnout because I was curious how close it was and if it could be adjusted in the same way the Saunders did in a video awhile back.
Mitotuyo 0.0001 indicator
Before - 0.005 TIR (not awesome, but needs to be accounted for when using small tooling if you don’t plan to check and adjust)
After - 0.0002 TIR
From what I’ve read, 0.0005 is generally accepted as good enough and im usually happy to be within 0.001. Who would have guessed you could tippy tap it into two tenths?
Try to buy the best you can, but learn to work with what you have