Hi all,

I have an old Sachs cartridge bearing BB stuck in a frame I just got. It is made of a plastic material but has notches for lockring tools. I was able to get the non fixed side off but the plastic stripped and won't let me get the fixed cup off. I tried to Dremel some parallel ridges so I could get a wrench on it but this did not work. Any ideas on how to get it off?

Thanks!