For model making, Jaksche uses special, innovative materials to produce the master forms. Modelling paste is the most expensive part of model making. The less excess material is applied, the cheaper it is. The critical step is the milling after the coating of the core with modelling paste. This modelling paste is expensive, but is preferred due to its low shrinkage. With the spraying core materials used, layer thicknesses of 12 to 25 mm can be built up in just a few sprays, which can then be CNC-milled to the desired geometry following curing.
Due to the quick curing of the system, the master form can be processed (milled, ground) after just a short amount of time. For the final processing of the master form, work can be performed cleanly with the usual milling tools (no dust, only chips).
Although the milling process is simulated on a computer, with complicated shapes such as curves or recesses, collisions can always occur. In such cases, the milling does not always do what it is supposed to. That is why this step is fully monitored by an employee.
Prior to final processing – such as polishing and painting – the model must undergo a practical test. The finished model must be perfect. Any quirks in the model will later be reflected in every finished part built.
Protrusions, recesses and slots must be in the right place. The finishing of the model is performed with suitable primers and paints and polished for a high gloss.