Transformation of the paraffin in granules or in pastilles in the case of the recycling in powder. Dosing of one or all powdered colorants with alveolar dispensers. Mixture of the paraffin and colorant(s) with the help of a mixer. Manual filling of the paraffin in powder in the hopper constituted of a endless screw allowing to fill the mixer. Handling of the dose with the help of a pneumatic jack over of the mold. Compression with a hydraulic jack. Ejection with an air jack. Dosing of the mixture with the help of an alveolar dispenser. Ejection with an air jack.