BeltDrivenEnder3 by kevinakasam Linear Rails Set

Drop-in rail pair for the BeltDrivenEnder3 MGN Z conversion. This set includes two 300mm MGN12H linear rails with Z0 preload, sized for the KevinAkaSam BeltDrivenEnder3 linear-rail Z-axis variant.

Why use this set

• Correct format: MGN12H rail and carriage format for the project’s MGN-12H variant.
• Matched Z pair: two 300mm rails for the left and right Z uprights.
• Two material choices: Black Steel for the value build, or 440C Stainless Steel when corrosion resistance matters more.
• Project fit: intended for the BeltDrivenEnder3 by KevinAkaSam conversion when you are building the MGN rail version instead of the stock V-wheel version.

Specifications

• Included: 2 × MGN12H linear rails with carriages
• Rail length: 300mm
• Preload: Z0
• Axis/use: Z-axis rail conversion for BeltDrivenEnder3
• Variant options: Black Steel or 440C Stainless Steel

Fitment

For the KevinAkaSam BeltDrivenEnder3 V3 MGN-12H rail files. The project supports Ender 3-family machines except the S1; confirm your printed parts and frame setup before ordering.

What it is not

• Not the full belt-driven Z conversion kit; pair with the main BeltDrivenEnder3 kit and the BeltDrivenEnder3 fastener kit as needed.
• Not a cure for extrusion inconsistency or tuning problems; KevinAkaSam specifically calls those out as separate printer-tuning issues.
• Rails need cleaning and lubrication. The project author recommends the wheel version first unless you specifically want the rail build.

“High quality. No grit came out when I had these in the ultrasonic cleaner in solvent.”