ABS is getting out from the gap

Hello.
I have a problem. ABS is getting out from the gap between extruder and pipe with screw in extruder.
There is a photo. What can be the problem?

Thank you!

It's not properly tightened. Make sure you tighten it again when the hot end is heated up.

---

--
Kind regards
Imqqmi

NFAN CoreXY printer:
[reprap.org]

Thank you! I thought if I tighten, the motor will get hot.

well, that may still happen, I can't be sure but I don't see any cooling fins and fan, that would be the preferred way to cool the cold end. It seems there's only a heat break. if you see any chance for upgrading, a full metal e3d v6 or lite may be the way to go. Inown two for my dual extruder and works well.

---

--
Kind regards
Imqqmi

NFAN CoreXY printer:
[reprap.org]

I have both fin and fan, but I disabled fan because if it spins, extruder can't reach 230C.
There is only one nut and instruction from seller say that the nut should be tightened like on photo. In this case filament get out of pag
If I tighten nut closer to hotend, than hotend becomes unstable (starts to move fom side to side and rotate, while printing)

Should I put second nut?


Yes, I've heard much about this extruder, I consider buying it.

I screw the heat break just even with the inside of the extruder. Tighten the nut against the extruder (heat sink), not the heat block. then tighten the nozzle against the heat block and the back off half a turn. Tighten the heat break against the heat block. Then tighten the nozzle against the heat block (you are really tightening against the heat break). Then retighten nozzle with heat block is up to right temp.

I couldn't clearly understand you post, Putzer.
How many nuts do you use here? 2 or 3?

I only have one at the heat sink. Not at the heater block.

Now it's clear. Thank you very much for your help!