Taken from Headwize, written by Tim D:
Padding the Grado Headband (MS-1)
Method (Tim D): The paper thin vinyl of the Grado headband comes off as "cheap" to me. You have two big earcups connected by paperthin vinyl and metal wiring - looks weird.
I glued the rubber cushion from the headband of my Sennheiser HD490 to the underside of the vinyl strip of the Grado headband. It makes the headband look much beefier and fits better. The black coloring of the rubber headband is PERFECT and matches perfectly with the black coloring of the Grado. Plus, it makes the Grados seem light as a feather on top of your head. The HD490 headband and cushion can be ordered as a replacement part for $8.60 from Sennheiser USA.
This mod may or may not be reversible depending on the way you "glue" the cushion to the band. I used a thin layer of acrylic caulking. When the caulking cures, it becomes clear, barely noticable unless under really close inspection. The cushion is bonded well to the bottom of the vinyl. I never tried undoing this modification myself, but I should be able to pull off the cushion and caulking on the vinyl should the need arise. The caulking is very sticky, but it doesn't make a HARD bond, so pulling off the caulking should be easy.
I thought about using the entire Sennheiser headband, but decided not to, although it is also very easy to do. However I couldn't think of a way of removing the vinyl headband that wouldn't be "permanent" and didn't want to fiddle with the metal attaching to the plastic pieces. Also I am not brave enough to fiddle around with cords and wiring. Besides, the rubber headband pad of the HD490 fits very well right under the existing vinyl. Someone who never saw a Grado before would not think I modded my phones.http://headwize.com/projects/showfil...=grado_prj.htm
This information may be of some use to you.