Dual Drive Gear Extruder Premium Kit for 3D Printers Ender 3 / CR-10S All Metal

SayerCNC

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Sayer CNC's Solution to the flaws in the current leading dual gear extruders in the market. Premium build.

Premium Dual Gear Extruder Upgrade Option for Creality Printers and More.

- Upgraded Parts to make the Ultimate Kit -



Dual gear extruders are not created equal - While most dual extruders for Creality printers look the same, they can vary in many ways and in most cases cheaper units have poor quality gears and/or fittings along with threaded M3 shafts. Our Dual Extruder Kits have been put together with customer feedback and our high level of quality control in mind.
Please read information below for more information on why our extruder kits stand out above the rest.
Kit Contains;
1x All-Metal Extruder Set
1x Fitting Hardware
1x All-Metal PTFE Pneumatic Connector
1x Nano Coated Gear Set
1x Bondtech Needle Bearings


Compatible with;
  • Ender 3 Series
  • CR-10 Series
  • or Compatible variations
This All-Metal lightweight Extruder can help reduce filament dust, may help increase print speeds along with providing greater consistent control over your extruding and pairs with high temp components.
Please note there may be very small inconsistencies on the anodised body due to the manufacturing process etc.

 

There are many advantages to upgrading to a dual gear extruder.

Perhaps the most significant advantage is the increased grip that the dual gears have on the filament. This results in much more consistent extrusion, which can be a huge benefit when printing complex or delicate objects. The increased grip also means that the filament is less likely to slip or jam, which can save a lot of time and frustration. Overall, a dual gear extruder is a significant upgrade that can provide many benefits.

Another great reason is the fact your printer has a default OEM plastic extruder. This would be one of the biggest troubleshooting concerns we have seen on printers and is a constant failure point in entry level Creality 3D Printers and their clones.

The above reasons are why upgrading to a dual gear extruder is on the top of the list for most 3D Printing enthusiasts.

The Issue

Grinding Extruder gears

What is often overlooked and not talked about a lot is the mechanical issue on dual gear setups. While some brands have created awe inspiring dual gear extruders, most generic dual gear extruders you find in the market are flawed in a few ways causing damage to the extruder itself. This results in poor extruder performance or failure sometimes even just after it has run a kilo or two of filament.

Poor Design

Damaged 3d printer extruder gear set

As previously mentioned most generic dual gear extruders suffer from a design flaw of which results in the outer gear grinding itself into the extruder arm.

The cause is said to be from two flaws in the overall extruder kit’s gear mechanism.

  1. The gears needle bearings run on a M3 threaded bolt
  2. The gear seats on the arm itself with no interface

 

 

The outcome is an inconsistent movement in the needle bearings as they are riding on a uneven thread and there is also no bushing between the gear itself and the extruder arm.

Inconsistencies in the movement allow the gear to shift and start grinding itself into the arms aluminium surface.

 

The fix

Replacing the M3 bolt with a smooth shaft along with the addition of a brass bushings on both gears, this allows for a smoother more consistent movement in the extruding process, precisely while the upgrade was done in the first place.

 

Sayer CNC Dual Gear Extruders

 

The dual extruders sold by Sayer CNC have introduced the solution to the design flaw and have additions upgrades beyond this issue like genuine Bondtech needle bearings and PTFE all metal fittings along with nano coated hardened dual gears. To top it all off the kits also come with a thumb screw adjuster and 3 spring types, allowing you to tune your extruder, your way.



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