BIQU Extruder Pulley 36Teeth Bore 5mm Stainless Steel Drive Gear for 1.75mm & 3mm 3D Printer Filament (Pack of 5pcs)

I recently printed Delein with moderate success but when I switched back to TPU for a customer I noticed I was getting terrible underextrusion. Come to find out the Deleon has almost polished smooth the teeth on the brass hub. I have since replaced the brass with these and have gone through a whole spool of delrin, glow in the dark, and wood and teeth are still sharp. Highly recommend. Also the larger grub screws allow for a much tighter lock on the motor shaft.

Better than enders part

A vast improvement over my stock brass gears. If you are having extruder issues, this is well worth a try to fix the problem. Used on a stock Ender 3 extruder, and I had no need to change e-steps (checked before and after, same result). YMMV, but this fixed my under extrusion.

I bought these last year and replaced all my printers with these. And they are far better then one comes stock. The stock wore out so quick. Once I put these on i haven had any problems with filament not getting pulled or filament slipping. there are currently being used for my CR-10s and Hatchbox alpha and not one issue. These are really high quality and at this price point its hard not to get them. I highly recommend getting these and having some lying around in case anything happens. Its better to have spares then to be down while new ones get shipped. Again these are much better then stock. Highly recommend!

Greatest

Slightly smaller than standard for my CR-10. Needed to play around with the feed rates to get the right flow. Dramatically less feed slippage though, and Im assuming the steel will be more durable than the stock brass parts.

I bought these to replace the one that came with my Anet A8 extruder and it works great! Way better than the one that came with my printer with less than 24 teeth.

Much better than stock... This was a nice upgrade to my stock Monoprice i3 clone.

Fit perfect and worked great after e-step calibration on cr-10s.

These gears grip the filament very well. They dont slip and generally provide nice results. In 3D printing, there are always little things that add up and these are a good inexpensive item to ensure that the whole system is running smoothly over long periods of time. Most people will have good results with this on a single gear extruder. The only weakness I have seen is that with certain prints that have a lot of retractions, there will be flattening of the filament. This may lead to under extrusion or even complete blocking of the Bowden tube. So if a certain print has fine detail such as fine embossed text, the retractions will add up and begin crushing PLA filament before the filament reaches far into the Bowden tube. Hence, this will lean on a slicer setting for Max Retractions.