I have a cr10s, do i need right hand or left hand??

All the ender 3 and cr10 series need the right version!!

Will this work with anet a8 plus? and what version would i need to buy?

You're having trouble with YOUR extruder, too, aren't you? We all are. They're terrible. This will work with your printer if you're fed up with their direct drive and you're converting it to use a Bowden tube. Be aware that Bowden tube extruders come with their own unique struggles, but they're not as nasty as the A8 Plus's direct drive extruders. Since you're doing this conversion, you'll also need some sort of 24V Bowden-style hotend. It mattereth not a whit whether you go with the left-hand or right-hand version for your printer; you'll mount it wherever you figure it'll be convenient. If I were you, I'd mount it somewhere left of center, but your circumstances may be different from mine. While you're at it, you might as well upgrade your linear bearings to polymer, too, and your control board to one of the many alternatives. Whatever you do, don't screw around; replace that power cable NOW before you burn your printer to a crisp! The one that runs from the power supply to the control board. It isn't big enough for that load, and the crimped terminals sometimes catch fire. Replace it with no less than #16 AWG wire.

Will this fit a Monoprice Mini v2?

It's designed for the Creality CR-10, but it's a fairly safe bet that it would fit any bowden printer that uses the same size motor for the extruder, and the same size filament (The creality uses a 42-40 stepper motor, but many other stepper motors have the same spacing between screw holes). Depending on the bracket the motor is attached to, it's possible the screws that come with this part might not be long enough, but replacement screws shouldn't be hard to find.

Is this all i need to upgrade an ender 3 to have a metal hotend for printing petg?

You don't need an all-metal hotend for petg usually. The one on the ender-3 will work just fine. The limit of a ptfe tube is around 240-250. Petg prints with a hotend at 230-250 usually, just make sure the filament you buy isn't one of the odd ones that might need higher temps. If you're worried replace the ptfe on your ender-3 with high grade stuff like capricorn and look for lower temp petg filaments.

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⚙️ Upgrade Your 3D Printing Game with Precision and Power!

DURABILITY MEETS DESIGN - Upgraded idler gear with dual washers prevents wear and tear, extending your extruder’s lifespan.
UNMATCHED FILAMENT CONTROL - Dual gear mechanism grips filament tightly, reducing jams and deformation for flawless prints every time.
WIDE COMPATIBILITY SPECTRUM - Seamlessly fits Ender 3 V2, Pro, Neo series, Ender 5 Pro, CR10, Vyper, and more—just ensure motor shaft >21.5mm.
PRO TIPS FOR PEAK PERFORMANCE - Calibrate E-steps to 139 and lubricate gears before use; includes guidance for filament detector and motor wiring tweaks.
PRECISION TUNING AT YOUR FINGERTIPS - Spring tension is fully adjustable, letting you dial in perfect extrusion pressure to elevate print accuracy.

The Redrex Dual Gear Ender 3 Extruder is a robust all-metal upgrade designed for popular Ender and CR10 3D printers with motor shafts over 21.5mm. Featuring a dual gear extrusion system, adjustable spring tension, and an enhanced idler gear design with protective washers, it ensures superior filament grip, reduced jams, and improved print accuracy. Compatible across multiple models, it requires simple calibration and maintenance for optimal performance, making it the must-have upgrade for serious 3D printing enthusiasts.

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Manufacturer	Redrex
Part number	RDX3D032
Item Weight	59 g
Product Dimensions	2.5 x 5.6 x 5 cm; 59 g
Item model number	RDX3D032
Size	Dual Gear Extruder
Style	Dual Gear Extruder
Material	Aluminium, Metal, Wood
Item Package Quantity	1
Batteries included?	No
Batteries Required?	No

RedrexDual Gear Ender 3 Extruder Metal Drive Feeder Upgrade for Ender 3 V2,Ender 3 Pro,Ender 3 Neo Series,Ender 5 Pro,Ender 5 Plus,CR10,Vyper 3D Printer TPU Filament Support(Motor Shaft>21.5mm)

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