This set consisting of 3 cutterheads allows you to produce 54/58 mm and 68/64 mm thick windows in several passes.
The diameter and the cutting length of each cutterhead are designed to reduce to a minimum the number of working phases for the construction of windows, even if this is not a programmed tooling system, in fact, it is quite cheap.
As shown in the picture, the cutterheads are supplied with hard metal (HW) knives, spurs and rounding inserts. They are already fitted on the tool’s body, but they are used only in some working phases. The spacers supplied with this cutterhead set allow you to adjust perfectly the projection between the first cutterhead Ø 140 mm and the second one Ø 116 mm.
In both schemes of the 54/58 mm and 64/68 mm thick window construction you can notice a cutterhead marked as “optional”. That is a 10 mm thick tenoning cutter. It is not included in the set, because it is a basic carpenter’s tool and the most customers already own it. Moreover the tenoning cutter must be chosen considering the thickness of the window you want to produce as weel as the capacity of your machine.
The schemes provide for a 20 mm glass windowpane. This can vary according to your requirements. It can be used a 10 mm thick tenoning cutter (in several passes), an adjustable tenoning cutter or, alternatively, you can also mill the junction between jambs and transoms and join them by means of pins and screws.

diagram window air 4 thickness 54/58 mm

diagram window air 12 thickness 64/68 mm