My experience with other aluminium blocks it's quite bad. They use to have the PT100 of 3.1mm (pt100 from ultimaker it's 3.0m+/-) so even with the screw they are 'loose'. I don't know if with aluminum foil it can be fit but I have read some mix stuff from reprap forum users so In the end I have 6 chinese aluminum heater blocks that I can't use (but they fit with the pt100 they sell so at least I can use it on 1 machine). In my personal experience, just buy the heater to ultimaker or, get the really cool E3D heater (the new that use pt100) the fit it's much easy, almost imposible to break the pt100 because but the heater area it's for 20mm so you might have 5mm of heater on the air (not the best option but it's ok).
Btw if half the nozzle it's inside... You might be able to remove it with a screw remover tool? If I remember well something like this happened to @ultiarjan on an E3D block, I don't know if he was able to recover it? If with some tool you can recover the heater, it will be cheaper, and probably you might be able to go back to print this weekend if you have a spare nozzle.
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LePaul 331
Congratulations on completing your Ultimaker
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Gencab 19
Well I broke the cardinal rule when working with electronics and delicate equipment. I used to much force on the heater block and nozzle resulting in the nozzle snapping inside the heater block. Ruined both components.
I ordered a new end from fbrc8 but they are out of heater blocks so I hope they get more soon. I managed to find some knock off aluminium block on Amazon I can use until the official part is available.
This all started when my UMO+ was under extruding so I proceeded to clean the hot end via the Atomic method. Didn't seem to work so disassembled the hot end then manually cleaned both the block and nozzle. The method for cleaning is similar to the atomic method but I used a small torch to heat up the components then clean. Its possible I applied to much heat to the nozzle making it brittle but im not sure. When I went to re assemble the hot end I noticed a little plastic was left in the thread so I applied some force to ensure it was a good fit. Then snap. Talk about instant regret. Looking back on it I believe I should have installed the nozzle while the block was hot thereby negating any residue causing resistance. Is this a correct or am I looking at this completely wrong?
My hot end got clogged with a plastic called PTE+. Its some great stuff but it definitely takes more heat to use and can be a little more tough to get a clean print. So my printer is down for the weekend until replacement parts arrive. I have certainly learned some lessons on what not to do in this case.
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