Sticky Clay – Wet Clay
Typically I use the stamp when the clay is trim-able. To avoid plugging up the stamp with clay.
Sometimes things get sticky when pressed deep into fresh wet clay. Cornstarch and baby powder will help with the impression too when the clay is wet.
If a little clay does get stuck in the stamp I use a stiff tooth brush to clean the clay out. Then dry off and dip in baby powder before making the next impression.