Impact of milling and sintering processes on the relative density and microhardness was investigated on TiAl-based (Ti20Al20Cr5Nb5Ni17Cu16Co17) high entropy alloys fabricated from pulse electric sintering process at a constant heating rate (100 oC/min), 5 minutes dwell-time, and pressure of 50MPa. A predictive model was created using response surface methodology (RSM) to analyze the impact of sintering temperature and milling time on the process. To minimize the number of experimental trials, user-defined design (UDD) of the RSM was employed in the design of the experiment, hence eliminating the need for a trial-and-error approach often connected with traditional experimental techniques. Observation shows that both milling time and sintering temperature played a crucial role in producing a high level of densification, resulting in improved mechanical characteristics. The optimization model indicates that with 9.7106 hours milling time and 887.923 oC sintering temperature, it is possible to achieve acceptable outcomes including a 99.72% RD, porosity percentage of 0.28%, and MH value of 802.868 HV.