I always bought bunch of those cheap ones, and before used, always did heat/cold treatment by burning them on the tip with butane torch until its really bright yellow, and a quick stab into a block of ice or dip into icy water, although the tip will be a bit brittle, but it will be really hard and and it just won't bend or deform.
Once chipped, just throw it away and grab another fresh one, much-much less stressful, at least for me.