Purple Onion Designs stamps are made of deeply etched red rubber. Unmounted stamps are such a great bargain, and you can't beat storing a large amount of unmounted rubber vs. woodblock stamps.
Stamps used: Home Sweet Home
When I first bought noteblocks, I loved them so much that I ordered some custom size wood blocks to fit. Then when acrylic blocks became popular with cling stamps, I bought some cling foam and mounted the noteblocks on them.
Michele gives great directions here on the POD site on how to mount unmounted stamps. She also sells red mounting cushion if you happen to have your own wood.
I use a repositionable tape runner and run it on the back of the rubber, then stick it on an acrylic block. Because POD stamps are so deeply etched, you're able to get clean, crisp stamped images just by using a temporary adhesive.
All the images on these cards were stamped without any cushion or cling foam, and they stamped cleanly every single time.
Hope this post helps you understand how I stamp with unmounted rubber--and you can, too!
Stamps used: Bird Cage,