V-Core 3 Rapido UHF + LGX Lite. Constant issues with filament not extruding/getting stuck in hotend.
So far I have took the printhead apart multiple number of times (at least 10 times), to fix this issue.
It happens almost each time I want to switch out the filament..
It keeps getting stuck right at the opening of the hotend, where the ptfe tube meets the hotend.. It does not help pushing filament through, it is is still stuck. It happens a lot and I'm getting very tired of it. Can anybody help me to fix this issue?
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The ptfe tube should extend all the way through the hot end until it can't go any further.
that's what I have, but I can try to do it again
would it be better to use capricorn than what came with the printer? (white tube)
You should use 2mm id tube
so not 1.9?
I would try to find one with 2mm and see if it improves
Because I have both. I have been running with what came with the printer (which I don't know what is).
This is what I use and it works for me: https://www.amazon.com/dp/B073RF7777?ref=ppx_yo2ov_dt_b_product_details&th=1
PTFE Teflon tubing 10ft- 2mm ID X 4mm OD for 1.75 Filament Bowden 3...
PTFE Teflon tubing 10ft- 2mm ID X 4mm OD for 1.75 Filament Bowden 3D Printer -Allen Tech PTFE Teflon Tube
Ok cool, I have a similar product at hand with the same dimensions
If that doesn't work maybe your extruder cooling fan isn't doing a good enough job on the heat break.
This part of the hotend is hot to the touch
Check out the specs on your cooling fan (CFM) and see if there's any recommendations for the rapido UHF in terms of required CFM
It would be weird if RatRig was sending me the whole kit, and the hotend fan is not up to the task..
Then I would ask for a refund..
I have now adjusted the length of the tube.
The new one that I made now was about 5mm longer.. so that might be why.
I hope that was the solution, but I will see I guess, since I will be doing some testings now.
So now I have changed to a Fan that have 14cfm.. it still does it.. It gets stuck right at the opening
Some wild guesses: It could be filament settings, retraction settings, poor quality filament, thermistor problems or incorrect thermistor choice in the firmware, or some hardware assembly mistake or malfunction. Sorry that's all I can think of.
check if the heatsink clamp screw is tightend
if not the heatbreak cant transfer the heat to the heatsink