earring posts snapping off

[jaybird]

Hi All,

I am having some real trouble with earring posts. I must have soldered about 10 posts, for them all to fall off.

This is what is happening....

I pull on the posts with flat nose pliers, whack them round a mandrel because I have been making hoops and they are fine, they don't fall off, just bend a little.

A day later, I bend the post down and it snaps off. I have attached a photo.

please help