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Look no further for a complete extrusion system that just works; the Titan Aero is the ultimate all-in-one package of HotEnd and Extruder. It's easy to mount and more compact than the traditional V6 + Titan pairing—perfect for flexible materials.

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New AERO, click click clicking

Hello,

I'm struggling to get the Aero setup. After hours of issues, from adjusting stepper drivers for 2V for max torque (using the E3D pancake stepper), I finally came across a post about the Hobb Gear. I had to tap the hobb to center the gear and was able to extrude a mediocre benchy. Backed off driver voltage to 1V and was still ok. However, no matter what, I can't get good extrusion for very long. Seems the hobb gear binds eventually causing issues. As I mentioned, even at 2V driver voltage skipping once it occurs. The bearings seem ok and I'm at wits end. The screw is not overnight either. I think I got a lemon, bought from Filestruder.

Any advice?

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Skipping is really stuttering, the hobs not slipping on the filament. No clogs either.

Using quarter stepping with 208 steps and it extrudes 100mm at that setting.

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[image|1409][image|1408]

E3D eventually sent me new bearings and that did it! I then switched to a mirrored setup and that worked as well.

Until today. Print stopped extruding middle of the night. Found a bearing in pieces (the one I'm the heat sink side). Now going over everything again with a fine with comb. There seem to be tolerance issues with this hotend. The hob gear not lining up with the filament, needing to be resolved by tapping the hob. Little tolerance for any pressure on the heat sink hob screw is a poor design. Now I'm noticing the hole in the black plastic piece that curves around the hob doesn't center with the hob teeth. Frustrating.

I did get the symptom of backlash clicking on retraction, just before total failure. If you have that well known issue... Jump on it asap. Could be your bearing is failing too. I wish they used better quality bearings. .99 cent junk and part is fused in the heat sink meaning now I must buy a new one!

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If you are having issues with bearings in either the titan or the titan aero contact support@e3d-online.com this is a common problem known as 'bearing gate' you can find all the information about this on our blog (https://e3d-online.com/blog/2018/01/22/b...)

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I've experienced two causes for clicking (skipping). The first is due to insufficient gap below the nozzle. Too close to the bed or previous layer, and so the flow is restricted. This can occur locally if there is some warp happening (warped surface is higher, etc). So look closely at the nozzle when it clicks and verify flow visually. The second cause for skipping is low nozzle temperature. If nozzle temp is too low, the gears skip due to increased viscosity/resistance to flow, etc. Don't believe your system temps displayed. Verifying your nozzle temperature with an independent measurement device (http://a.co/1yOvv6E). Another easy way to test for inadequate nozzle temperature is to increase nozzle temperature by 10-15C, and see if the clicking goes away.

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Eric,

Huh. I think you might be onto something. A couple of days ago when switching rolls, I upped my temps to 245c for my Hatchbox PETG filament and I noticed that there was considerable less clicking. The previous roll was eSun PETG with 230c. I *lowered* the temps in hopes of reducing blobs. I'll go back to that roll and retry with higher temps.

And you're other comment about z height makes total sense, too. I will keep an eye on that going forward.

Thanks for the feedback. Happy Thanksgiving!

Gene

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More alignment issues...this should not happen. This is even with the adjustment I had to make on the Hob Gear to push it all the way to the left and line up with the tensioner. Destroyed the heat sink bearing slot and the hob.

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Not to mention the bearing totally blew out since I posted last time. I'm now on my 3rd set of bearings and continue to find alignment issues. Continue to throw money at replacement parts just to keep this hotend up. There is a machining or dimensional issue somewhere, thanks e3d.

see a comment I added to my top post above for more detail.

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SingleSided,

I just bought and received my Titan Aero extruder from Filastruder this week, too. Installed yesterday with no problems so far <crossing fingers>.

One thing to check is that the top of the pinion gear is flush with the top of the drive shaft gear. Step 20 from the docs:

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Also, it's possible that its a bad extruder? For reference, I ordered the NEMA17 13N-CM stepper motor from Filastruder. One test would be to run the motor separately from titan to isolate. If you see stuttering, then thats the problem. Otherwise, the motor either has problems under load (i.e. connected to the Titan or is not totally fine.

I hope this helps!

Good luck!

g

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The pinion is flush, yep. Been through all those docs with a fine tooth comb. I replaced the motor with a different one with more torque and no more stuttering. Getting terrible prints and it's super hot...so I'm worried I have a tolerance issue somewhere. I literally can't put ANY pressure on the top right bolt without binding.

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SingleSided,

How is your Titan Aero holding up?

Unfortunately, I am now starting to hear the "click click clinging" sound from the gears. It looks like its skipping or slipping steps. I first tightened the tension bolt thinking that might help it grab the filament better, but the increased dramatically. Loosening it lessened the clicking dramatically, but it doesn't completely go away.

Did you ever find a way to stop the clicking/missed steps?

@E3D, do you have any suggestions?

g

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I just wen through this also. Finally lowered the pinion a touch lower than the drive gear. I found this by slowly loosening all the screws on the extruder till the clicking went away. Since I lowered the pinion no clicks at all and it turns with much less force.

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see my comment above in my section. not good

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That sucks. And very disappointing. I had such high hopes for this extruder. Mine is really starting to click now. I'm going to need to disassemble and figure it out. I'll definitely check the bearings.

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check their forum too and you'll see lots of posts about alignment issues. I have a new hob gear (the hardened one) and new mirrored heat sink coming. One other thing I'm wondering about is the pankcake motor shaft does not go into the heat sink. That "may" cause some wobbling, but really shouldn't. I guess for sanity I should also swap with a 3rd motor (the E3D pancake never worked) with a longer shaft too. I also picked up retraction clicking along the way too. Even though I have zero play between the motor gear and the hob gear. I guess all their energy is on water cooling now LOL. Like who wants that??? Maybe they know they need to get rid of the troubled heat sink all together and that's how.

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2 months and only 2 successful prints. Similar to other stories. Get it assembled and sometimes it will work for a while then stop. Increasing extrusion amount and/or tensioning the arm makes things worse. I can turn the hobb gear manually or assist when the extruder motor 'tries' to turn so leads me to think the motor is underpowered for the work (have tried increasing temperature and such). I can also successfully extrude by pushing the filament through (tiny bowden tube so not seeing drag there).

Also, retraction is fine. Just not enough torque to push.

Next trying the tip to slightly lower the pinion and see if that works.

All bearings look ok. Not a print height issue. Tested extruding with print head touching nothing.

Seems like the tensioning arm may drag on the big hopper wheel when actually assembled.

Also compare my hopper wheel to the 1.0 version with poor grooves and looks like I'm ok there too.

Anyone have other suggestions other than taking a really big hammer to it?

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I finally increased amperage from 500 to 1k on the extruder. Clicking stopped. No more issues with under extrusion.

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Adam,

What motor are you running with your extruder? I've using the Nema17 13N pancake stepper motor (https://www.filastruder.com/products/nem...). I've heard of some people swapping that with another beefier one.

I'm assuming you upped the amperage via the microcontroller board software. What software are you using, Marlin? Smoothieware? Perhaps that's something I can try as well. If you're using Marlin, what setting did you change?

Thanks for your updates and everyone else's updates here. I'm keeping the faith, hoping that I can somehow get this thing to work consistently before I pull out the "big hammer" or upgrade to my printer altogether (Prusa i3 mk3 upgrade *planned* for later 2nd half of 2018).

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I'm using the little pancake as well.

I'm using a Duet board so just had to update the config file for the amperage. I'm pretty sure Marlin has a similar config file.

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How is the temps going? I mean, is your stepper motor getting hot? tried the same and my motor gets hot, i think this motor is to small for what its suppose to do, iv now contacted e3d and hopefully they can sort this out

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I, too had a clicking issue after reassembling the extruder. Turns out I had the pinion gear on backwards (grub screw towards the front). Turned it back the way it should be.....clicking stopped.

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SingleSided will be eternally grateful.
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