The present invention relates to a method of making a sintered body comprising one or more hard constituents in a binder phase by injection molding or extrusion. According to the invention, the binder system comprises 30-70 wt % poly(ethylene-co-vinylacetate) and balance (Polyethylene)-blend-(Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy)-based wax. The solids loading of the feedstock, .gamma., is 0.51<.gamma.<0.53, calculated using the equation:.gamma..rho..rho..rho..rho. ##EQU00001## where .rho..sub.s is the density of the material as sintered, .rho..sub.b is the density of the binder system and .rho..sub.f is the density of the feedstock, measured with a helium pycnometer. Debinding is performed by heating in a furnace in flowing hydrogen atmosphere.