Personally, I have been very disappointed in the results when using liming wax on both oak and ash. I prefer the contrast from using an ordinary wax and do not think that the liming wax adds any additional quality to the overall appearance. I used a suede wire brush across and against the grain to try and lift the grain to take the liming wax, but without much success. Is there anything else that can be done to "boost" the effect of liming wax?
Try using the other coloured waxes too - they are available in black, green, blue and a range of shades of brown. Also siver and gold. All can be used to good effect to enhabce grain or to accentuate applied texture.