SoliForum - 3D Printing Community — replace hot end resistor 5.6 Ohms

Re: replace hot end resistor 5.6 Ohms

null@example.com (tealvince) — Wed, 03 Jul 2013 19:42:09 +0000

I think 5.6 ohms is probably okay, but 2W isn't likely high enough. Is a 2W resistor even wirewound? I've read that earlier SDs shipped with a 4.7ohm 5W resistor, and new ones may be either a 5.6 or 6.8 3Watt ones. I replaced mine with a 6.8ohm 3W resistor that is specifically sold for use with reprap, so others must be using these too:

http://www.ebay.com/itm/181059052240

Re: replace hot end resistor 5.6 Ohms

null@example.com (adrian) — Wed, 03 Jul 2013 15:11:24 +0000

ceramic heater cartridge FTW
http://www.ebay.com/sch/i.html?_trksid= … ;_from=R40

Re: replace hot end resistor 5.6 Ohms

null@example.com (driggers) — Wed, 03 Jul 2013 14:29:12 +0000

Update on this: I burned out the 5.6 Ohms 2W resistor. Have installed another one that is the same until I get something better... not sure what that will be...

Re: replace hot end resistor 5.6 Ohms

null@example.com (elmoret) — Tue, 02 Jul 2013 23:36:01 +0000

The resistor's fine, you need to autotune the PID. Search here or look in the wiki, it's been covered many times.

replace hot end resistor 5.6 Ohms

null@example.com (driggers) — Tue, 02 Jul 2013 23:31:36 +0000

I replaced the hot end resistor with a 5.6 Ohm resistor, after the replacement from solidoodle burnt out. I can't seem to find a definitive source on the resistor they used, so I bought a smattering of them from 2.x, 3.x, to 5.6. I installed the higher resistance one for safety, and it heats up ok, but seems to overshoot by 10 degrees, before coming back to 190, which I had wanted to print at.

Question: What (range of) resistance and wattage should my resistor be rated for?

fyi, I used silicone heat transfer compound and kapton tape, instead of cement, to install the new resistor.