RepRap Champion Modular Screw-on M3 Stud Thermistor for Reprap 3D Printer Extruder Hot End, Works for V5, V6 Hotend, Rigidbot and Others

I thought I would give this thermistor a shot since I was about to change out my heater block and switch nozzles anyway. The existing thermistor was working fine. It was cheap and had some reasonable reviews so I thought I would give it a try as it might eliminate some of the hassles mounting a bare thermistor. I hate to give bad reviews since so many people only post a review when they are unhappy with a product. In this case I think I should give fair warning to other users about what this product actually is and the risks involved in using it.This is not my first rodeo. I have rebuilt and serviced this print head literally dozens of times and it still has the original thermistor I got for it. I know how fragile these leads are and how to strain relieve them to avoid breakage.I installed this thermistor with a new heater block on my E3D print head. I was careful with the leads when tightening the thermistor into heater block. I strain relieved leads so there was no stress on leads where they enter the stud as I normally do with the fragile bare thermistors and undid my whole wiring harness to the head and swapped out the old thermistor. I did a test print using T-Glase at 238C and after about 10min the thermistor came out of the epoxy resulting in the head overheating and started burning the filament. Luckily I was watching it and noticed when the filament started turning caramel colored.Let's face it - this is a thermistor that has been epoxied into a brass motherboard standoff. It is only as good as the blob of epoxy holding it in and the epoxy job in general. I won't be trying this again. Be forewarned that this will be a total hit or miss proposition from unit to unit. It's back to mechanically clamping the thermistor to the heater block for me.

I started using these instead of the ones you capture under the screw head and I really like em. Yep way more expensive but I can do a complete heater block/nozzle change now much faster. I wouldn't say they are more accurate but they certainly are more convenient. The first one of these I bought ran about 3 months and only stopped working cause I ham fisted it one day and broke the wire right down at the screw in piece. the seond one is still running fine after maybe 2 months so far. I have 2 spares just in case.

I bought this because I didn't want to deal with assembling the thermistor that comes with the e3d v6. The reviews here made it seem like a no brainer. I've been having issues with oozing though, so I decided to check the temperatures. Because it's enclosed in a hunk of metal, it takes a long time to register the proper temperature. To test this I put a temp probe into the hole the thermistor would normally go in, with this product screwed into the hole above it (normally for the screw to hold the thermistor). I set the temperature to 200. When my probe read 200, this product only read 150. I have my settings proper in Marlin, and eventually the two probes will read the same temperature once this hunk of metal stabilizes. But I could see a setting of 240 easily exceeding the recommended 280 temp before this thermistor registered 240. Be careful. If you don't mind "stepping up" your temps, this thermistor would probably be great, but I don't want to wait for long stabilization times as I slowly move to my target temperature, so I'm switching to the thermistor that came with the e3d.

This is a great replacement thermistor for 3D printers, especially as it works without having to change the firmware values for many popular printers. It will screw right into an E3D block without modifications, so installation is a breeze. I'm giving it 4 stars because the connector that comes pre-installed on it is fairly loose, and will come slightly unplugged during the vibration of printing. I solved this issue on mine by using some heatshrink tubing over it, but a more resilient connector would make this a 5-star product.

After you use a screw in thermistor, you'll never want to use the awful traditional ones that came with the E3D hotends. Super simple to attach and the included Molex connector makes this even more worthwhile. Plenty of extra wire if you're running your electronics on the outside of an enclosure, and an extra Molex connector in case you want to shorten the cable (why bother).I know E3D did recently produce a cartridge style thermistor (which I would prefer, but have not tried), but you unfortunately have to purchase a new heat block to accomodate the cartridge style thermistor. That still makes this a great purchase for everyone with existing E3D's.Would definitely purchase again and probably will.

This works great with e3d extrudes. Much better than the thermistor that come with the extruder. Very easy to install. It screws into the threaded hole that the normally used for the screw and washer that hold the thermistor in place in the e3d heater block.Be careful not to bend the wires where they meet the thermistor too many times. The conductor will break right where the wire exits the epoxy filler and cannot be repaired. This can be easily avoided by simply fastening the thermistor wire just below the connector to something solid on your extruder assembly using a zip tie.

I was unsure of how this would compare to the standard method of mounting to my e3d hydra hotend, but it works as good as if not better than the standard configuration with less stress on the wires(standard configuration involves pinching the wires against the heat block with a washer and m3 bolt)... the epoxy and the sheathing on the thermistor appear very durable as well. I'll be purchasing a second for the other side of my hot end.I've only had this now for a few days, and I will update the review if anything changes

Excellent drop in replacement for the E3D V6 nozzles as others have stated.- As listed on the product TAKE CAUTION NOT TO exceed ~280C while printing. The thermal paste used to seal the thermistor is not tolerant above that temperature.- Temperature limitation will prevent you from printing with poly carbonate.- Seller should update page to remove 300C rating beneath the 280C limitation as it may be confusing to some customers.