@quixoticgeek Ooooh, that looks like it was cut with a positive rake angle, brass cuts *so* much better with a negative one ^^'
@dequbed Oh yes, I was just using what ever inserts were in the makerspace lathe tool holders.
@quixoticgeek if you only can find ones that are designated "for <material>", cast iron and titanium are usually also cut with small or neutral rake angles, so those will probably work
@quixoticgeek Few inserts are specifically designed for one special material, but you can certainly find inserts that fit your holders that have other geometries