In summary, we have demonstrated galvanic electrochemistry as a viable approach to fabricate Pt-based microswimmers in a scalable fashion by combination with the Pickering-wax emulsion technique. Interestingly, we find that the inherent asymmetry of the produced films also leads to motion of some particles functionalised by bulk stirring. Nonetheless, introducing asymmetry with Pickering wax emulsions doubles the proportion of microswimmers obtained growing Pt films and leads to a two-fold increase of the propulsion velocity. By using copper as a sacrificial template, the method minimises the use of expensive and toxic noble metal precursors, and the rapid complexation of copper by amine groups reduces synthesis time. Complexing first the metal ions before addition of a strong reducing agent also prevents the uncontrolled formation of nanoparticles in solution, providing a further handle on the synthesis of the metal films as well as minimising nanoparticle emissions . By exploiting galvanic electrochemistry, the method presented here can also be extended to a range of metals, suggesting a versatile approach to obtain large quantities of a range of functional Janus particles.