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Apr 2015
8 days later

Hi, yes the hot end. the nozzle stay fine but it always block. i think i have to put more retraction.

what filament do you use and do you Always do test extrusions on different temp levels?

I m using pla white esun. I had some issues with black. I tried different temp levels. At a point it block for no reason.

The blocking is most likely caused by the teflon tube in the hotend.

At some point the heat might migrate trough the material (in this case PLA) and it seeems like hot PLA can stick to the teflon tube to clogg the hot end.

I’ve had barely any problem with PLA, however material blends, like WoodFill and CopperFill caused this problem.

My current attempt on solving this is by installing the e3d chimera dual extrusion hotend. It has no Teflon in the hot part of the extruder, which causes a lot less cloggs, hopefully clogg free printing.

Beside that e3d has a wide range of nozzle sizes, from 0,25mm to 0,8mm, whereas leapfrog only sells 0,35 and 0,5mm.

the e3d nozzles have a flat bottom, which benefits smoother top layers, also e3d sells stainless steel nozzles, which are needed to get 100% food safe prints (brass nozzles contain lead, that might get into the printed object). Stainless steel nozzles are also necessary to print carbon fibre materials reliably, the fibres are abbrasive and will widen the brass nozzles, this doesn’t happen with steel ones.

Thank you Pomaer for your answer. Is it possible to put chimera on the creatr HS? I don t see how to put it and replace actual extruders.