Welding a quadhelix apparatus
In preparation, bands should be hollowed out in the area to be welded if work is to be carried out on the model.
This can be done by waxing out beforehand or by grinding out after fabrication of the model.
In this way, the risk of damaging the bands during welding can be minimized.
As with other devices that use prefabricated hinges, it is recommended that the hinges are hollow in the area of the intended joint weld for the locks. This minimizes the risk of accidentally perforating the hinges, see also here in the middle of the page: “Welding on ready-made belts”.
When working on belts on a model, it is advisable to work with welding times that tend to be shorter, e.g. with a pulse duration of no more than 1 – 2 milliseconds.
As always, we start with a freshly ground electrode.
