surface clean with warm soap suds and a vegetable brush, spray with Lysol and then either freeze sealed in plastic zip lock bag for wee or bake in 250 degree oven for 30 minutes.
No microwave,no washing immersion
Tailoring hams are oblong ham shaped tailoring tool for pressing in curves in sleeve caps, shaping darts and princess seams in jackets etc.
For quilting, I have used mine to steam a nice curve on bias binding for appliqued stem, Winding Ways patterns