3D Printing Maintenance

Hot End Disassembly / Assembly for Cleaning
Hot End Disassembly can be seen on the Rotrics Website here...

https://manual.rotrics.com/faq-troubleshooting/troubleshooting/troubleshooting

Contributor: Discord User Eldkatten

Additional Advice on Assembling the Hot End: -


 * 1) Put the heatbreak into the heatsink, as far as it goes.
 * 2) Screw the free end of the heatbreak into the heater block, so that the thread is completely inside the block.
 * 3) Screw the nozzle into the heater block, until it doesn't go further (it touches the heatbreak then inside the heater block). If this is correct, there is a tiny gap between the base of the nozzle and the heater block. If this isn't the case, loosen the nozzle again and screw the heatbreak a bit further into the heatblock.
 * 4) Then tighten the nozzle again against the heatbreak inside the heater block. Repeat until the nozzle is tight, but there is a tiny gap between the base of the nozzle and the heater block.
 * 5) Now you have to heat up the hot end. Caution now! 190°C isn't something to take lightly! - When the target temperature is reached (190°C will do), tighten the nozzle again. Be careful not to overdo it, I broke a nozzle once at this stage. What you want to achieve is this: the heatbreak and the nozzle need to touch inside the heater block, and they have to touch really tightly. If that is not the case, there will be the tiniest gap between the nozzle and the heatbreak, and filament, which is pretty liquid at that place, will definitely leak out. If you want to reuse the heater block (for example if you just want to exchange the nozzle), unfortunately you have to do the whole procedure with the heater block at 190°C from the beginning. Otherwise the threads will be stuck, and probably you won't even be able to unscrew the nozzle or the heatbreak. Sure, handling this with every part being hot as hell is no real fun, but it is doable.

Hot End / Nozzle Cleaning - Cold Pull Technique
Contributor: Discord User ChrisWhite