Some tips about epoxy putty
This is also known as “green stuff”.
Use only hobby grade stuff. Many brands of epoxy putty are for plumbing and are entirely unsuited for using with miniatures.
Wet your hands when mixing, water keeps the putty from sticking to your fingers. Or your tools for that matter.
Dental tools can be had at most “dollar stores” and are fabulous for shaping putty. Galeforce Nine puts out a set that is out of this world, and worth every penny.
If the temperature is warm, the putty will be more workable and stay malleable for longer.
If you want your putty to stay solid while it is setting, you can put it in the freezer.
Two-part epoxy putty relies on a chemical reaction to dry. It does not need air.