Drainage Slot Machining for Aluminum Window Profiles
Use the approved profile-system drainage drawing to verify slot location, burr removal and an open path after assembly.
Identify the drainage chamber
Obtain the fabrication instruction for the exact window system and opening configuration. Mark the chamber, exterior exit and any prescribed vent or cap. A slot dimension copied from a different frame system can put the cut in the wrong chamber or interfere with a seal.
Inspect an assembled section
Machine a representative sample and check the slot position against the specified reference. Remove burrs using the approved procedure. After assembly, verify the route is open and remains clear of gaskets, sealant and hardware. If the system prescribes a water test, follow that method and its acceptance criteria.
Check repeatability across handed pieces
Mark which face points outside and verify mirrored members separately. Record the tool, stop, program and inspection method. If a slot shifts between stations, inspect the locating datum and profile seating before compensating in the program.
What to record before production release
Inspect the route before the cap or trim hides it and retain a marked section sample. Record the precise profile drawing revision and the side facing out. Use these to investigate any later production change affecting drainage.
Related equipment and reading
Send your drawings or samples for review.
Technical reference
Schüco window care guide. Illustrates the need to keep drainage slots clear. Use your own system fabrication drawings for dimensions and position.