Pourable amber liquid - Additions of .5 - 1%. Ensure you weigh amounts precisely, as an over addition will dramatically reduce printability. After adding Thickener 3, stir thoroughly, but do not overheat the ink. You may not notice an immediate build after the first additions; however, refrain from adding more than 1% as the additive may take time to build viscosity. Wilflex recommends mixing only what you need to complete the job as any left over ink may become difficult to print after time.