My hall bath has a partially enclosed tub. I have researched an L-shaped shower curtain rod and know that they exist, however, I would like the longer part of the "L" to be curved to allow for more room in the tub when taking a shower. Can I curve the longer portion myself successfully and easily without harming the curtain rod?
It depends on how brittle/ductile the rod is. Its likely steel, which has a wide range of properties. There may be finish cracking issues. The wider the radius, the more likely the success.
I would experiment on a similar but simpler rod. The methods I suggested here would be the least expensive tooling.