From a newsletter written by Bev Adams: "The video shows how to use the standard embossing folders (like the Greenery one), the Stampin' Up! 3D embossing folders, and the “Dynamic” embossing folders we used to sell.
The 3D embossing folders are thicker than the standard folders and give a much deeper impression.
My Subtle Dynamic folder is thicker than the 3D ones.
Both the 3D and Dynamic folders give the same deep impression, but with less thickness.
If you buy a Subtle embossing folder today, it will be a 3D folder.
Each uses a different “sandwich.”
Standard folders have the card stock in the folder and the folder between 2 clear plates.
3D folders use only one plate but it's tricky at this moment in time.
If you have the retired blue 3D Embossing Folder Plate, place the card stock in the folder. Put the folder on the platform. Cover the folder with the blue plate.
If you do not have the blue plate, you will need to use one clear plate on top of the folder and then add shims to make up the thickness. The shims can be card stock or thin cardboard. Experiment with your machine to see how many layers work best for you.
The new Stampin' Cut & Emboss Machine will come with the appropriate plates and instructions. It will be arriving soon!"
View Bev's video: https://www.youtube.com/watch?v=jeZOQM7_7Nc