There are basically two storage boxes for tap sets: the metal box is made of moulded, powder-coated sheet steel. These cassettes replaced the classic wooden cassettes. The market penetration was pushed forward by the company Drillbox in the 1970s. Drillbox became a generic term for this form of twist drill sets and tap sets. With the metal cassettes you should pay attention to the stability of the hinges and the handling of the fasteners as well as the thickness of the steel sheets. It is also important that the powder coating is applied cleanly.
The other form are plastic cassettes. There are the most different types and variants. PEDO was one of the first suppliers in Germany. The Solingen company made these assortment boxes popular on the German market in the 1990s.
With the plastic cassettes, you can already see during the visual inspection which quality was used as a basis here. The odour sample is important: If the part smells strong, caution is called for. Pollutants could be emitted. Please also remember that plastic that is too hard breaks easily. Therefore models made of soft plastic are to be preferred. With this type the dilemma is to find the right middle between holding and letting go. Sometimes the tools are hard to get out of the boxes or they don’t hold and fly around loose in the box and then get lost. Relatively new are milled multi-part foam inserts that can be combined with standard metal or plastic boxes.
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