To make an inexpensive and useful water stain Van Dyck Crystals are dissolved in HOT water (not boiling)
to obtain colours from dark brown to a light tan. The quantity of crystals can be varied to obtain the desired colour;
or make a strong stock solution, then dilute a portion with hot water for lighter tones.
To assure even results strain through muslin or clean cotton cloth to eliminate any possible sediment.
(The addition of a tablespoon of Technical Ammonium Hydroxide to a quart of solution will increase the penetration
into the wood and slightly darken the colour. Keep the ammonia off your hands and avoid breathing the fumes.)
(Use water soluble aniline dye in mixed liquid form to enhance or tone towards warm or cool colours.)