The old saying, just because its new doesn’t mean it is good.
One of the heating cartridges i had gotten from E3d was just not heating correctly. Now before i get to far this is not any attack on Sinjay or even putting blame on him. This just happens to be a cartridge that he bought then sold. So the problem came from the heating cartridge factory.
I had ran the PID auto tune a number of time trying to set this cartridge correctly. Just wasn’t working. Long heat up times and never hit the mark. Today i finaly check the resistance and it was a 12 ohms. All my other ones were at 3 ohms.
Swapped that thing out and baadabige baadaboom. Fast perfect heating after running the PID again.
Lesson relearned to self. Check the simple things first before firmware and what ever else.
You got a 24V heater instead of a 12V. Doesn’t look like E3d sells that version, so they may have ordered a batch to test and accidentally shipped one out, or it might have been a mixup at the factory. The 24V ones are usually marked, but you have to look closely.
Ah is that what it is. I looked for some numbers buy failed to see any.
Thank you for posting this! I just received the Kraken hot end (yay!) and I totally didn’t realize they shipped with 12v because my printer runs on 24v. That would have been a bad surprise to stumble across!
That would of been a bad one. Glad this helped.
@Whosa_whatsis I’ve tested hundreds of these things, they have about a 0.25% failure rate.
Nominal is around 3.5-4.5ohms - but when you get a bad one they suddenly jump up in resistance to 10+ohms, with wild variance up to 100 ohms. At first I thought it was 24v heaters in the mix, but now I don’t. They are all manufactured for us exclusively in a custom factory run, all for 12v, all in one batch. I would posit that this is just a simple failure as opposed to a muddled 24v.
@Wayne_Friedt You’re obviously owed another heater - if you get in touch over the support system I’ll get you a new one sent out. Sorry you got a duff one.
I’d avoid using the 12ohm cartridge as a 24v heater or otherwise, because there is something obviously awry when it was manufactured.
Why do we use heaters from these suppliers when they fail (rarely, but regularly). First is supply ability, they are the only supplier that can deliver quantities in the thousands in a reasonable time frame. Second is price, the nearest priced alternative would put the cost of the heaters up for you guys by around £10 a hotend, which isn’t cool.
@Sanjay_Mortimer I have sent a message already and thanks for the explanation.