LowRider V3 CNC Upgrade - HGH15 Linear Rails & NEMA23 Motor Mod (Remix)

Mod Features:

• HGH15 linear rails on the Y-axis for improved stability and accuracy.
• NEMA23 motors (23HM22-2804S) for the X and Y axes to handle heavier loads and improve cutting performance.
• Custom-designed motor mounts and extension plates for smooth integration of the NEMA23 (23HM22-2804S) motors.
• Y2_Rail_Unistrut_Spacer is used to properly space the HGH15 rail on the Unistrut. This part is installed on the inside edge of the Unistrut to ensure the proper alignment of the rail.

Printing Instructions:

All parts have been printed successfully using Polycarbonate at a 0.15mm layer height.

PLA hasn’t been tested, so I can’t guarantee performance with it. Polycarbonate offers more strength and heat resistance, especially under higher load conditions.

No supports required for most parts, with the following exceptions:

• Y1_Nema23_Mount and Y2_Nema23_Mount: These need to be printed standing upwards and require supports to ensure proper print quality.

Machining Instructions for Y_Extend_Plate:

• The Y_Extend_Plate has been milled from 3/8 inch aluminum for maximum rigidity. If you use a thinner plate, it’s possible to make it work, but you will need to add some washers to the side with one screw to adjust the fit. The motor mounts are designed with this 3/8 inch thickness in mind.

Recommendations:

• This mod hasn’t been tested with PLA, and given the higher loads and stress from the NEMA23 (23HM22-2804S) motors, Polycarbonate or another high-strength filament is recommended.

Tolerance Warning:

• The motor mounts and Y_Extend_Plates have been designed with very low tolerances, so if your CNC machining or 3D printing isn’t properly calibrated, the parts may not fit correctly. Be sure to check your machine’s accuracy before printing or machining these parts.

This is a remix of the excellent LowRider 3 CNC Hidden Belts Mod designed by Doug Joseph. My version is tailored for HGH15 linear rails and NEMA23 motors, providing greater stability and precision for high-speed cutting tasks.