A 30 year old male wants capping of his tooth. History of previous dental treatment in relation to 25. IOPA examination of 24 reveals radiopaque material in root canals and no periapical radiolucency. Dentist prepares the tooth and final impression is made. On next appointment, he decides to cement the crown with zinc phosphate. He mixes the zinc phosphate cement on a cool glass slab, adding a small powder to the liquid every 20 seconds. This is done to gain which of the following advantages?