75mm Trickle Vent Exhaust Kit,90dg elbow connector

Original design — printed and tested before release

Window Trickle Vent Adapter Kit – 75 mm Printer Exhaust (Quick Disconnect System)

This kit converts a standard window trickle vent into a clean, secure exhaust outlet for your 3D printer. Designed specifically for 75 mm hose systems, it uses a quick‑disconnect coupling so you can attach or remove your exhaust line in seconds without tools. Perfect for users who vent PLA/PETG fumes outdoors and want a tidy, reliable, low‑leakage setup.

It can be used without the quick disconnect; just clamp your pipe directly to the vent elbow.

I have uploaded 2 print profiles:

1.  218mm distance between mounting holes for 75mm exhaust hose with quick disconnect and can also be used with a hose clamp or ty-wrap to fix the hose.
2. 280mm distance between hole mounts for 100mm exhaust hose with no quick connect only smooth tube for connection with ty-wrap or hose clamp.

What’s Included

• Main Trickle‑Vent Adapter – precision‑fitted geometry for common UK window trickle vents
• Quick‑Disconnect Hose Coupler – twist‑lock design for fast attachment and removal
• Retaining Disc / Inner Ring – ensures a tight, rattle‑free fit inside the vent channel

Key Features

• Smooth internal airflow path for reduced back‑pressure
• Strong mechanical joints designed for repeated connect/disconnect cycles
• Print‑friendly geometry with no fragile overhangs
• Optimised for 0.4 mm nozzles and standard PLA/PETG
• Designed for real‑world use: stable, rigid, and tolerant of minor window‑frame variations

Printability

• Supports: enabled, Tree (auto) and tree organic.
• Orientation: as per build blate with flange down to ensure good mating surface.
• Recommended Material: PLA or PETG (PETG preferred for outdoor temperature swings)
• Layer Height: 0.2 mm (can increase to 0.24 to decrease print time by 30 minutes).
• Walls: 2
• Infill: 15%
• Build Plate: Textured PEI recommended for grip and clean underside finish

Assembly & Use

• Attach  the adapter on to the trickle vent opening after the original vent has been removed.
• Attach the quick disconnect fitting to the 75mm exhaust hose using a Jubilee clip/Hose clamp / Worm gear clamp or even a ty-wrap
• Attach your 75 mm hose using the quick‑disconnect coupler
• Twist to lock, twist to release — no clamps, no screws, no fuss

Why This Design Works

This adapter solves the common problem of messy, improvised window exhaust setups. The quick‑disconnect system keeps your workspace clean and lets you detach the hose instantly when not printing. The airflow path is tuned for Bambu Lab printers and similar high‑flow systems, ensuring efficient chamber purge and minimal restriction.