3DChameleon BMG Clone Extruder Fix

Рет қаралды 32,705

3 жыл бұрын

In this video I walk through a very simple fix for the main reason a BMG style extruder fails to load automatically from the 3D Chameleon. You'll need a razor blade, a small section of PTFE tube and your typical Allen key set to disassemble your extruder and install the PTFE to act as a spacer to keep the drive hobbed gears in alignment with each other.

Пікірлер: 64

@3DRabbitHole 8 ай бұрын

Two years ago you came out with the the perfect solution for my today's problem. Internet is really amazing.

@linerror 2 жыл бұрын

an OEM that identified a problem with another companies equipment and provided an explanation AND a free solution?!

@antimartyr 3 жыл бұрын

You beautiful man! I just had this issue tonight and you have saved me countless hours troubleshooting tomorrow!!!!

@razvanpopescu9811 3 жыл бұрын

Great fix. I was challenging with a significant under-extrusion effect and now it works just perfect. In my case the gap was in the opposite side checking with the filament free position.

@MAGA_Patriot2024 3 жыл бұрын

I just started scratching my head as to what was going on with mine, then found this so thank you!

@WoodenCreationz Жыл бұрын

Thank you soooooo much! This was doing this on my flsun super racer!!!! Filament was jamming and breaking off and getting twisted…. And print quality went to poop. Did this hack and it prints perfect prints now….it too has the slip in that gear. Possibly better than factory now!!! Ty so much for the video… Brian

@bleach_drink_me 2 жыл бұрын

Thanks for this tip. Did it to 2 clones I have. Have only tested 1 so far. It's currently printing TPU perfectly fine. Was able to get pla to load fine as well.

@lap87 3 жыл бұрын

Great fix, had no idea this could be an issue

@split3d610 2 жыл бұрын

I also aligned white gear closer to housing to reduce play of that shaft and lever had play as well. Now it is really good. I dont know if original has tighter tolerances and no play.

@Orgruk 2 жыл бұрын

I didn't actually do this fix, but it was simple: the grub screw on the drive gear was loose so it was freely spinning. I tightened it.

@ondarkendwings 2 жыл бұрын

I appreciate the effort. They're very hit and miss these extruders. The first one I had worked fine latest months until the gears got messed up. The new one I have has this issue but I can't resolve it. It's frustrating

@gruffnutz Жыл бұрын

I have exactly this problem and I was going to try putting a washer in when I saw how the toothed wheel moved from side to side. I'm pretty pleased that my solution from looking in the extruder and working it out was the same as the experts. Its such a fucking hit and miss buying cloned stuff. I would happily buy original more often but the main problem is finding original manufacturers goods, if indeed they are still made.

@bleach_drink_me Жыл бұрын

Matterhackers has them.

@gruffnutz Жыл бұрын

@@bleach_drink_me thanks but I have a condition which makes it difficult to use that store. It’s called impatient Australian syndrome.

@reinux Жыл бұрын

The real ones are like $130 right now :(

@reinux Жыл бұрын

Thanks, this fixed my problem.

@MikeKasprzak 3 ай бұрын

I love this fix idea.

@ExtemporeMuzzzz 7 ай бұрын

Out of the box I had 1mm space there almost 2 . I cut spring and placed there now works perfect

@tjlqk3 3 жыл бұрын

Simple and effective

@TheLEDwheel Жыл бұрын

I have this extruder(not clone) and was having extrusion issues. I removed the idler gear and replaced it with a bearing and the problems went away. This happened on my Prusa Mk3s as well. not a fan of dual drive extruders. That being said, Using proper sized shims you can really set it so it never moves again.

@calistastudio1651 Жыл бұрын

I had the same problem, drive wheels not lining up. I used another solution, the lever itself has also so much space on top so I put the "washer" under the lever on it's shaft. Now the drive wheels do not line up 100%, maybe 75% but it is more than enough so that the "free" drive wheel is taken up by the filament that is inserted.

@electronicsandewastescrapp7384 3 жыл бұрын

I bet that back and forth action has something to do with the complaints about these on amazon. I might grab one of these now. There's a 2.0 clone too that has some corrections made to the filament path.

@timoburgi3784 2 жыл бұрын

I got the exact same one on amazon, and while some of the negative reviews are a little off putting, I thought for a 1/3 of the original I give it a go. It seems to work fine for me, even before the shaft has a little spacer.

@madorax251 2 жыл бұрын

i bought a transparent g clone and i installed it on ender 3 with bowden setup why during retraction it makes a very loud sound

@williamsteele 2 жыл бұрын

You need to look at it and watch what is moving if it is making noises... I don't really have enough information to help you, but none of them that I have make loud noises.

@eduncan911 2 жыл бұрын

The loud noise on our BMG clone was at high-ish speeds with a 380mm bowden tube @ 5mm retraction. Turned out it was the set-screw that was loose, grinding away at the shaft through the white gear. Very common problem on these BMG clones. Once I fully seated it, and added lock-tight, noise went completely away.

@patrykK1028 2 жыл бұрын

That seems like a terrible design flaw. I have the same extruder and it randomly jams. When it does it's game over for the print, since it can't "unjam". I will try this fix, hopefully it helps

@fenexj 2 жыл бұрын

FUCKING THANK YOU!!!

@gruffnutz Жыл бұрын

@dudedud238 Жыл бұрын

Wow, mine wasn't assembled correctly... I only have one of those bearings in mine >:(

@oOWaschBaerOo 10 ай бұрын

i have a different issue with my clone extruder... it makes tick noises when retracting quickly.. it seems as if the big gear driven by the stepper has a little bit of backlash, and i think thats whats causing it ... :/

@ruuman4 6 ай бұрын

disable stealthchop and see if the noise is still there

@wheredamirrorgo7867 2 жыл бұрын

I tried this, the ptfe tube just slides inside the gear, and it still slides back and fourth, just over the ptfe tube. What am I missing here? It's like the ptfe tube diameter isn't wide enough to cover the side. I cut about 2mm, cut a slit like you, slide it on next to it, then when I mount it, the gear slides over the ptfe, the same way it does the bearings and I have the same issue as before. Any ideas?

@3d_chameleon 2 жыл бұрын

Perhaps the diameter of the shaft is smaller... if that's the case, you can use a washer or cut a piece of plastic sheet and place it in between the ptfe and the gear, which will stop it. You can also use a larger diameter piece of tubing if you have some.

@Yamaha-MT-09 2 жыл бұрын

@@3d_chameleon I was thinking about using a washer, but relatively new to 3D printing so didn't want to mess it up. I'll look and see if I can find a plastic washer, if not I like the plastic sheet! Thanks for the quick reply, damn printer sounds like a phone vibrating extra loud on every retraction, very loud.

@barenekid9695 Жыл бұрын

PTFE tubing comes in at least 3 diameters that I know of Only the largest diameter works.

@onecarwood Жыл бұрын

I have one of these and there is a plastic washer in the bad that I was wondering what it was for. Maybe that’s why it’s in there.

@williamsteele Жыл бұрын

Oh... that's a new thing then.

@AndrewAHayes 10 ай бұрын

@@williamsteele As far as I am aware, hte black washer is to go on the thumb screw to stop the spring pushing into the hole on the arm, I have the Haldis model and the gear does not slide around

@postcert 10 ай бұрын

Ended up using that washer for mine as it fit just perfectly as the bowden tube was slipping under the collar of the gear and not helping with keeping it in place. Planning on just printing a little wafer as it seems to be for the spring as @AndrewAHayes has said.

@kucuku 4 ай бұрын

I got one this week, unfortunately, even after checking this, the extruder still doesn't load my fillament, it just slides in it.

@Tazron68Sub 3 жыл бұрын

Hi! I just purchased an MK2 4 color and was wondering what you suggest to use for holding all of the different spools?

@williamsteele 3 жыл бұрын

The best thing is a RepBox... but I also just use cheap acrylic spool holders from Microcenter.

@ThePlexman 3 жыл бұрын

does it just affect the crappy knock off's of an original product?

@williamsteele 3 жыл бұрын

I haven't had a chance to test the real thing. But I've only seen it effect some of the knock offs, not all.

@ThePlexman 3 жыл бұрын

Interesting I have a pukka bmg on my homebuilt mendel will take a look

@flushroyal970 Жыл бұрын

what is the bearing in this video?

@williamsteele Жыл бұрын

Hmmm... not sure what you're asking. The bearings are inside the gear... the PTFE tube was just used as a spacer.

@flushroyal970 Жыл бұрын

@@williamsteele My bad, it was 3am for my timezone and I was frasturated. While doing this mod, I droped one of the bearings. I couldn't find it. I was asking what is the name/type of the bearing. Thanks!

@eduardo_Skywaller1032 9 ай бұрын

Needle bearing... i think

@bukszpryt_ 5 ай бұрын

Just tried that. The hole in the gear is big enough to fit ptfe washer inside it, so it can still movewhen washer gets inside with bearings

@williamsteele 5 ай бұрын

You can always use a larger tube to do the same thing.

@bukszpryt_ 5 ай бұрын

@@williamsteele I know. I only have standard ptfe tubes used for bowden drive. I installed some plastic washer what i had to cut to size. Didn't test it yet.

@DigBickMcQueen 3 ай бұрын

@@bukszpryt_I used the plastic washer that’s used for the thumbscrew and spring for tension. Works flawlessly

@barenekid9695 10 ай бұрын

No mention of how those wee needle bearings.... Badly Chew up the Not Hardened Axle AND the insides oif the also unhardened Gear.

@williamsteele 10 ай бұрын

Haven't had that issue at all.

@erehr4623 2 жыл бұрын

No need to fix that as it self align when you push filament through (at least in better quality clones like trianglelab)

@williamsteele 2 жыл бұрын

It won't self align in these cases... The alignment is more than the diameter of the filament off in some cases. This really causes issues for autoloading filament.

@barenekid9695 Жыл бұрын

Trianglelab being 'Better' quality is Pure Advert Nonsense. Their Stuff is every bit as crap as most All other Aliexpress vendors.. They just Charge More on their 'better' pretense.

@barenekid9695 Жыл бұрын

Have you noticed.. Yet!? that the Cheap Chinese Cloners use a Mild steel shaft for that gear? It quickly wears... creating grinding paste which destroys the bearings as well as the shaft! Go.. China ! A dead CDRom drive has a pair of Quality 3mm Slider rods these make for Good shaft replacement donors. Best to fit to a New BMG Clone though as fresh hardened shafts won't be much use in a chewed up gear ./bearing assly.

@AndrewAHayes 10 ай бұрын

I have the Haldis clone which has much better quality steel gears than the really cheap clones, I also have a genuine Bondtech extruder and the gears on that are very much like the ones on the Haldis, they could be genuine Bondtech gears.

@user-yk1cw8im4h 3 жыл бұрын

Bad solution. The ptfe tubing gets into it and created friction. @3:55 it clearly doesn’t spin freely anymore, you might as well take out the bearing...

@laing0ian 3 жыл бұрын

Did this happen to you or is your comment a observation? I have done this fix, wandering if I may have problem later..

@williamsteele 2 жыл бұрын

It does spin just fine... and it's been working for months just fine. When I spun it, I wasn't trying to spin it freely, I was using side to side pressure to show that it doesn't move as far as it did, which was causing the alignment issue. The PTFE tube is only contacting the center ring of the bearing, so it's not impinging on anything that rotates.