Refbjerg manufactures only a small number of pipes in his workshop in DK-2860 Søborg, which are considered to be tremendously precisely executed. The dimensions mostly range from small to medium sized, corresponding to his personal preferences. The shapes adhere to the classical models, but often he gives them a touch of Danish flair. Refbjerg accepts minor faults but never uses any fillings. "Straight Grain" is the only grading, used for his very best pieces. He likes stem decorations made of exotic woods or metal rings.