POLISI3D Plated Copper Heater Block High Temperature Ender 3 Heat Block Compatible with MK8 Extruder Ender 3 V2 Pro Ender 5 Plus CR10 S4 S5 3D Printer All Metal Hotend Upgrades

Works well and is nearly same fit as original. You will need to have a canister style thermo probe, not what was stock on my printer. Ender 2 v3 Neo

I didn't get to used it , but material feel fine

As simple as a heat block is in principal this one still manages to innovate. Yes it is very well machined and polished to a mirror finish, which looks very nice until it gets covered in burnt plastic, but where this block separates itself is that it can use either a glass or cartridge thermistor. Honestly I don't know why all heat blocks aren't made this way, but its a feature I really appreciate.The copper alloy makes it suitable for high temperature printing, and I have noticed a marked improvement in temperature control compared to the factory heat block it replaced. The thermistor cartridge and heater cartridge can both be secured in two places, and the package included all the needed set screws. The promotional description claims that a groove in the top around the heat break throat reduces conduction to the heat break reducing clogs. Anecdotally the groove seems to help in this regard, but it could be purely placebo and I have no objective way to validate this claim. It is competitively priced however, so I see no reason to select other heat blocks that don't have the versatility to use both glass and cartridge type thermistors. I really can't find anything to fault, so 5 stars it is!

Even though the idea of a heat block is straightforward, this one manages to be innovative. It looks great until burnt plastic covers it, but that's where this block stands out—it can utilize a glass or cartridge thermistor. Yes, it is beautifully crafted and polished to a mirror shine. It's a feature I really like, however I'm not sure why all heat blocks aren't created this way.