RepRapPro Huxley improvements

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Introduction | Frame assembly | Y axis assembly | X axis assembly | Z axis assembly | Heated bed assembly | Extruder drive assembly | Hot end assembly | Wiring | Commissioning | Printing | Maintenance | Troubleshooting | Improvements

A notice about these instructions!

These instructions are open to editing by everyone and anyone.
For the official, and most up to date, instructions, see the RepRapPro wiki here


Contents

This is the place to describe improvements to RepRapPro Huxley

Huxley Mini-Spool

A horizontal mini-spool to store a small amount of filament right under your Huxley.

Huxley mini spool.jpg

Mattroberts' Huxley Paste Extruder

Replace the hotend with a 5ml syringe.

MR Huxley Paste 3430.jpg

Mattroberts' Huxley Carriage

Adds nuttraps to the carriage, so you replace the self tapping screws with metal screws.

Achieving Finer Quality Prints

Upgrading the standard 0.5mm nozzle which comes with your Huxley kit to the RepRapPro 0.3mm nozzle will produce finer quality prints at 100 microns or better.

0.3mm Nozzle.jpg

(See: eMAKERshop, 0.3mm Stainless Steel One Piece Nozzle)

  • N.B: A feeler gauge is required to accurately calibrate the nozzle/bed, also print time is substantially increased!

PLA vs. Aluminium Pulleys

Upgrading the X & Y axis printed PLA pulleys with T2.5-16T aluminium replacements can increase print accuracy, especially when printing circular or curved objects. This will only be true if the metal pulley's bore is more concentric to it's teeth than on the PLA pulley.

T2.5 Alu Pulley.JPG

The pulley illustrated is "Aluminium with Zinc plated Steel Flanges. They are factory-drilled and reamed to 5mm +0 -0.02mm to match the standard shaft diameter for NEMA17 or NEMA14 motors used in most RepRaps, and factory-drilled and tapped for M4 x 6mm grubscrews" (See: eMAKERshop, Think3DPrint3D).

You will have to remove the steel flange at one end of both pulleys (using a metalwork lathe) in order to mount them on the Huxley's drive shafts.

  • N.B: Don't forget to reconfigure the firmware's steps/mm setting.

Smooth Rod Lubrication

Optimum carriage travel for all 3 axis can be obtained by applying "Super Lube" (Synthetic Grease with PTFE) to all smooth rods.

PTFE Grease.JPG

It provides a substantial improvement over white lithium grease, as it provides the lowest coefficient of friction.

  • N.B: It's costly for a relatively small quantity.

DIY Cooling Rack

You can make a small wire (glass bed) cooling rack by obtaining a 120mm diameter PC fan guard.

Cooling Rack.JPG

Folding down all four circular lugs creates small support legs.