A new method of preparing multiple samples, from one resin mix portion, for strength testing is presented. The method is based on rapid mixing of the resin mechanically and forcing a select number of seven specially prepared moulds into the mixed resin. The system is applicable for both cylindrical and cube/prisms particularly suited for fast setting resin. The study demonstrated that the samples are easily prepared, uniform in composition, with little or no entrapped air. It was found that the samples yielded consistent uniaxial compressive strength values with a standard deviation of 0.47 and a coefficient of variation of 0.88%. The methods can be used for different sample sizes.