Mechanical Magic by Lorraine Ulrich

When Aster Genisov, a creator of mechanical novelties, is asked to help a wounded elf, his special talents and painful past could be the key to the elf’s survival.

Y’rean was born to touch the sky, but when his wings are destroyed by a cruel master, not even the life he begins to build with Aster can assuage his despair. Aster has the means to help him—it’s written in his gypsy blood—but is love enough for Aster to face his past and embrace his talent for mechanical magic?