Bosch GTK 18V-52 (Click and Clean) to Siemens Vac

This model is a practical adapter to connect a Bosch 18V Click & Clean System tool—such as the GKT 18V-52 GC—to a Siemens household vacuum cleaner.
It is a functional (and now more sleek) remix combining elements from two sources:

• https://www.printables.com/model/146761-bosch-pex-to-siemens-vac-adapter
• https://makerworld.com/en/models/1291945-bosch-gkt-18v-52-gc-karcher-wd-adapter

The original Siemens-side connector was slightly oversized for my vacuum, so I reduced its diameter by approximately 1 mm, resulting in a clean, snug, and reliable fit on both ends. The Bosch Click & Clean interface remains fully compatible and locks on securely.

The adapter prints well in PLA and PETG using 0.20–0.24 mm layer height, offering the needed toughness and slight flexibility for a durable, airtight connection. Ideal for anyone wanting to integrate Bosch’s cordless dust extraction system with a standard Siemens household vacuum.

Reworked to a more sleek version