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“Well, I am very sorry but must advise against this mod.
I did print and install it and found it VERY usefull ... untill I began to have problems with overheating of the "teflon-tube".
The original fan is mounted against a heatsinck. That heatsinck is mounted against the bottompart of the springmechanism. That bottompart is the part in which the nozzle + throad (with teflontube) is screwed.
So my guess is that that bottompart has to be optimal cooled to protect the throat against heating.
With this mod I had filament getting soggy and even melting within the teflon-tube and thus preventing a good flow.
I had nothing but troubles, was not able to print in decent quality ... untill I removed this part and mounted the fan again old style.
I am very sorry because I too found this a brillant hack.”