Although the traditional artisanal thermoforming process is easy, it shows a huge limit: the production of the mold. Since they are hand-made by bending and welding together sheet metal and rods, manufacturing a single mold can occupy a resource up to two entire days. Batches of bent pipes can number between 10 and 30 individual pipes, meaning that each one needs its own mold. This means that for a single batch of 30 identical pipe configurations, two months of work are needed to manufacture all the molds.