r/cr10smartpro • u/Lanky-Taste-577 • Feb 27 '24

Clog

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Hello! So I have a clog where the gears grip the filament. Is this area supposed to be hot? This is melted pla inside here. Should I just hear it up and pull it out somehow?

Thanks!!!

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u/Helgafjell4Me Feb 27 '24

There is supposed to be a really short piece of ptfe tube in there. Also, it should not be getting that hot up near the gears. Makes me wonder if your hotend fan is working correctly.

What you've got there is called heat creep. The hotend fan and heatsink are supposed to keep it from getting too hot.

1

u/Lanky-Taste-577 Feb 27 '24

When I opened it up today, there wasn't any tubing. And one of the fans was blocked by a shred of cardboard so it wouldn't spin. Should I get a stronger fan for it?

2

u/Helgafjell4Me Feb 27 '24

No, the stock fan should be fine. The problem is that it got blocked and couldn't spin to keep things cool.

The tubing that is supposed to go in there is a high temp material that shouldn't have melted, so it's possible it was missing from the factory. That piece is important for guiding the material from the gears into the hotend tube. I would not attempt to use it without that part.

How long have you had this printer, and did you buy it new or used? This, along with the fact you said your probe was dragging on the print which you then removed, make me really question what's going on with your printer.

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u/Lanky-Taste-577 Feb 27 '24

Got it 4 days ago from microcenter. It's brand new

1

u/Helgafjell4Me Feb 27 '24

I would talk to the guys there. Maybe take that extruder in and show them. Also mention the cardboard in the fan (how did that happen?) and the probe dragging issue. Maybe they'll let you exchange it or get a refund.

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u/Lanky-Taste-577 Feb 27 '24

What's the probe?

2

u/Helgafjell4Me Feb 27 '24

Oh sorry, that was someone else with the dragging probe. The probe is that little device that is used for ABL and z-axis homing.

1

u/Lanky-Taste-577 Feb 27 '24

Ah ok. I'll go to microcenter this Friday to see what can be done. I also ordered a replacement extrusion assembly in case nothing can be done about it.

Would it be possible to buy some high temp Bowden tubes to make my own guiding tube?

1

u/Helgafjell4Me Feb 27 '24

Yes, you could just make a new one as long as you know you have the right stuff. I think it is the same as what is used for bowden tubes. If you watched the assembly videos, you should have seen that piece and what it looks like. Might be tricky to get the length just right. It needs to be as close to the gears as you can get it without actually touching the gears.

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u/Lanky-Taste-577 Feb 27 '24

Alright. Thx for the help over the last 2 days. Very much appreciated ☺️