lawnmower motor magnet broken

[mark]

After investigating a scraping noise, I found about 10% of one of the 2
halves of the magnet broken off. Removed and cleaned it up and it runs ok
except there seems to be a little vibration. I assume the field is not
balanced? What kind of glue/epoxy would work to reattach the magnet?

 

[mark]

Used Araldite and made a wooden dowel to clamp it - works great!

Thanks