The resins I use fall in to two broad categories, factory produced (both old/vintage and modern) and my own in-house custom resins.
Below is a selection of what I typically have available at any time but it is subject to change. Many of these resins are "vintage" or no longer produced so they do run out.
A warm, soft feeling material loved by pen makers and users alike. Often with translucent areas allowing a hint of what is going on inside the pen.
Original resins from the famous British company Conway Stewart. Timeless classics in a variety of colours.
Ceblox resins from the Italian company Mazzuchelli. Some of the most sought after plastics for pens due to the scarcity of them.
Semplicita resins in a variety of vivd colours. Used in the making of my Mono models.