SBR20 Locking Dovetail Mount (Quick-Swap System)

Description

This is a robust dovetail mounting system designed specifically for SBR20 linear rail sliding blocks (SBR20UU). I created this mechanism to allow for modular, quick-change attachments on linear motion projects without unscrewing the base block every time.

Key Features:

• Quick-Swap Design: Easily slide different tools or mechanisms onto your linear rails.

• Locking Mechanism: Includes a dedicated hole for an M3 screw. This acts as a set screw to firmly lock the dovetail plate in position, preventing sliding during operation.

• Heavy Duty: Designed with thick walls and high infill to withstand mechanical stress.

Hardware Required

• 4x Machine Screws: (Typically M5 or M6) to secure the base to the SBR20 block.

• 1x M3 Screw: Used as the locking set screw (length depends on your preference, 10mm-15mm recommended).

• If you prefer using a nut rather than threading into the plastic.

Print Settings

These parts are designed for mechanical stress, so strength is a priority over speed.

• Layer Height: 0.20 mm

• Infill: 50%

• Infill Pattern: Gyroid (Essential for isotropic strength in mechanical parts)

• Wall/Perimeter Count: 4 walls (Reinforces the dovetail geometry and the M3 screw hole against shear forces)

• Material: PLA+ / PETG / ABS

• Supports: No supports required if printed flat.