Dri­ven by the pas­si­on to crea­te incom­pa­ra­ble one-offs, Diehl has beco­me a sym­bol for exclu­si­ve sta­ir con­s­truc­tions. It can be an exci­ting chall­enge when one CNC machi­ne is to be repla­ced by ano­ther. Howe­ver, the elec­tri­cal power of the new one could have cau­sed parts of Frank­furt to go dark for a short time.