HF Obxidian, heat creep
Hey! Got the obxidian hf nozzle 0.4mm and installed it. Works great for fast paced or small detailed prints as well as any prints above .1mm layer height.
But it keeps overheating and jamming. Which is getting frustrating, I've read through forums and tried everything short of thermal paste or replacing the fan(Which works fine I think)
I suspect that the issue is that they take length off of the top of the heatblock and add it to the nozzle. That puts the heatsource really close to the head and the heatbreak.
I would really like to get this fixed if anyone has any thoughts
RE: HF Obxidian, heat creep
What filament are you pushing through it. Also, is the filament dry? High flow nozzles tend to clog with some types of PLA, damp filament, TPU etc.
- Bob Marley
RE: HF Obxidian, heat creep
I have been using makerbot filament. Which I have actually become very sceptical of because once during a pring it doubled in diameter and lodged in the feed.
As for it being dry it was in a airtight package until a week-ish ago
I moved to e-sun filament for the last print I tried and it worked fine the heat-break got to a max temp of 37 celsius
I am not sure if that is because of my latest modifications or filament. It could really just be the filament because that stuff has lost all trust
In case it applies, here are my latest additions
- In custom G-Code filament in prusa slicer I changed the target heat-break temp to 32 celsius(If I did it right) "M142 S32 ; set heatbreak target temp"
- Raised chamber fan speed by 10%
- I cooled the room the printer is in a few degrees
RE:
I have been using makerbot filament. Which I have actually become very sceptical of because once during a pring it doubled in diameter and lodged in the feed.
As for it being dry it was in a airtight package until a week-ish ago
Even if it was in an "airtight package" it doesn't mean it was actually dry. It could have been sitting in a warehouse for a year. Also, depending on your environment and filament type, a few days (or hours even) in the open air is enough for it to be too damp to print cleanly. I always put filament in a dryer even after opening from a dryer bag. Damp filament can easily clog a nozzle.
Here is an example of a TPU test print. On the left printed immediately after removing from a factory sealed bag and then on the right after 6 hrs in a filament dryer:
- Bob Marley
RE: HF Obxidian, heat creep
Are you aware that the insertion depth for E3D nozzles is different? Meaning, there is one 3d-printable template for setting the height of standard nozzles, and a differently sized one for E3D.
Standard: https://www.printables.com/model/1237212-core-one-nozzle-replacement-tool
E3D: https://www.printables.com/model/1260118-core-one-nozzle-replacement-tool-for-e3d-nozzles-e
RE: HF Obxidian, heat creep
@hyiger With that in mind I will definitely look into possibly damp filament. I don't however have a filament dryer and am hesitant to get one.
Is there a way to dry filament without one?
@mnentwig I was not aware, I will definitely look into that
Thank you for your help everyone!
RE: HF Obxidian, heat creep
@hyiger With that in mind I will definitely look into possibly damp filament. I don't however have a filament dryer and am hesitant to get one.
Is there a way to dry filament without one?@mnentwig I was not aware, I will definitely look into that
Thank you for your help everyone!
You need a way to dry filament and store it or you will run into frequent problems like this. First, what kind of filament are you using? Is it PLA or PETG?
One way to dry it out is to set the print bed to 50-60C, put the spool on the bed, cover it with a cardboard box and leave it for 5-6 hrs. Another is to use a food dehydrator (one you intend to never use for food). Or buy a dedicated filament dryer.
- Bob Marley
RE: HF Obxidian, heat creep
I am using PLA at the moment but I do also use PETG.
I am also receiving an order of other kinds of filament in the next few days so I will have a variety of materials.
Thanks for the drying suggestions!
RE:
I am using PLA at the moment but I do also use PETG.
I am also receiving an order of other kinds of filament in the next few days so I will have a variety of materials.
Thanks for the drying suggestions!
Recommend not only getting a dryer but also airtight bags or plastic cereal containers with packs of silica gel to keep the filament dry when not in use. Unless you live in a desert.
- Bob Marley