How to Make your Own Polymer Stamps

Step 6 Washing out the Stamp

It is now time to start the washout process. Immediately separate the two halves of the glass and peel the negative off of the polymer. Always peel the negative off the polymer not the substrate off or the stamp will not have a good backing for washout. Place the polymer image in the washout solution and gently scrub with fine bristle brush or soft toothbrush until all of the excess liquid polymer is dissolved from the stamp surface. Rinse in water to remove the last of the washout solution. At this time you can trim off the excess hardened polymer. Place the stamp in the plain water container and set under the UV light and expose for 10 minutes. This fully hardens the stamp, and makes it less tacky.