EDIT 02.03.2026: Added an alternative version with grip grooves, which can provide improved grip in certain door and flooring combinations.

The Flex-Hex-Hook is a compact, flexible door and window stopper optimized for TPU printing.

The combination of:

• Curved hook geometry

• Shock-absorbing TPU

• Hex honeycomb lightweight structure

provides a secure hold while preventing hard impacts or scratches on doors, floors, and window frames.

Ideal for:

• Room doors

• Balcony doors

• Windows

• Narrow and wide door gaps

• Sensitive flooring surfaces

TPU also adds natural anti-slip properties.

The model is scalable to fit specific needs or unusual gap sizes. However, the original dimensions are designed to fit most standard doors and windows without modification.

Proven Print Settings

Material
Overture TPU 95A

Settings

• Perimeters: 2

• Infill: 15%

• Pattern: Grid

• Layer height: 0.2 mm

• Top/Bottom layers: 5-5

• Nozzle: 0.4 mm

• Supports: Not required

This way it consumes only ~23 grams of filament.

Features

• Flexible & shock absorbing

• Scratch-safe for floors & frames

• Anti-slip TPU grip

• Lightweight hex structure

• Dual use: Door + Window

• Compact & scalable