Rapido All Metal Hotend (Blue, HF)

Great brand!

Awesome hotend used on my Voron 2.4r2 300x300 with Stealthburner. I opted not to get the UHF Ultra Hiflow because it's longer and puts the nozzle too far below the fan ducts. This works with the official Voron Rapido Stealburner mount without modification. The connectors did not match the ones on my build (Formbot Kit w/ Dragon HF) so I had to cut, crimp and replace with ones that works. Of course your mileage will vary but if you built you printer with a Formbot kit... be aware that it's not just plug in and go. I've been running this with a Diamondback .4mm nozzle. Now flow issues printing at speeds up to 300mm/s but mostly I print around 150mm/s.

I cannot get this to work with my 3D Printer. Using an Ender 3 V2 with Klipper. The temperature is reading -38 celcius when configured with the correct sensor type (ATC Semitec 104NT-4-R025H42G). Other sensor types seem to connect, but have wildly different values, and none seem accurate. I am having trouble getting support with this as well.

Update 3/23/22: Seller responded quickly and is working to get me a replacement heater cartridge. Great customer service and easy to work with!The strain relief did not have any slack in the wires going to the heater cartridge, and the wire assembly is fragile as a result.I would just buy a replacement heater cartridge, but nobody sells them. I don't need the nozzles, socks, hardware or heatsink. Just a heater/thermistor cartridge.Kind of a bummer, as it was decent while it worked (even though it hit nowhere near 75 cubic mm/s flowrate, closer to ~50 or so at quite high temperatures (top of the range recommended by the filament manufacturer).

This hotend handles whatever settings I try. Paired with a Bondtech LGX Prints come out crisp and clean. My new go to for all my machines. 100% recommend getting this

I'm not sure that I can blame the nozzle. Maybe I need better cooling fans, I'm just not sure. I'm mostly using this with petg at 250C, it works great with a 1.2mm volcano nozzle, but I fear that taking this thing apart and cleaning it constantly just to use it is going to wear the thing out before its time.This is less a complaint and more advice seeking, but others should be aware before they buy this. It doesn't just clog in the nozzle or somewhere simple either, but between the heat break and the heat block.I intent to use nylon eventually and if this clogs with nylon it'll probably ruin it. If I can find a solution to this I'll gladly change my review.

Installed quickly and started printing beautifully right out of the gate. I need to design some tests to experiment with how high I can get the flow, but so far, it's very promising.Love that it came with a volcano adapter so I can use my cheap volcano nozzles or my expensive CHTs. Nozzle changes are super easy, too.

My nozzle and throat clogged up this morning and the one of the holes in the top of the extruder stripped out, making it much less usable.

The hotend heat really fast and the filament flow is really good. At first I was using a regular extruder and had clogging issues. I decided to change to a dual gear extruder and everything work like a charm.The downside is, the first time I've disassembled the hotend to unclog, one of the three small screw broke in the socket. The other two are okay but this one is stuck there and I can either replace it (can't find these type of screw) nor remove it since it's kind of deep in the screw socket.I've printed since with only two screw attached. For small print, everything is fine... but for higher print, there is over-extrusion on the side opposite to the missing screw. It's seems that I can't equally adjust this section of the hotend and create a small angle that cause this problem.Anyone have any idea how I can replace/fix this part?