We strongly recommend using only Xstamper® Refill Ink to re-ink your Xstamper pre-inked rubber stamp. It has been specifically formulated to flow cleanly through the micropores of the Xstamper’s laser-engraved rubber. Using ink other than Xstamper Refill ink can clog these micropores and void the Xstamper warranty. Please follow the directions below for your respective Xstamper mount. After re-inking, please allow stamp to sit up to 24 hours to reach maximum saturation.
Link to PDF instructions.