SRD:Make Whole

Make whole completely repairs an object made of any substance, even one with multiple breaks, to be as strong as new, (but not warps, such as might be caused by a warp wood spell). It will weld broken metallic objects such as a ring, a chain link, a medallion, or a slender dagger, providing but one break exists.

The spell does not restore the magical abilities of a broken magic item made whole, and it cannot mend broken magic rods, staffs, or wands. The spell does not repair items that have been warped, burned, disintegrated, ground to powder, melted, or vaporized, nor does it affect creatures (including constructs).