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  1. Thanks for posting. The arm in mine is fine. It seems the issue is that there isn't enough of an overlap in the two gears on the back of the filament feeder. I used a washer to push the larger gear out, and now it works fine. It looks like there's also room to push the gear on the motor out from the motor a little further (it's not seated at the end of the shaft, but rather farther up).
  2. Hey - I pulled the gear off and put a washer behind it and now my UM2+ is printing beautifully. No popping, grinding or under extrusion. The washer pushes the large gear so it's almost against the metal plate on the back of the UM body, so I put a little grease on it as a precaution.
  3. Seems to be fixed! I put a washer under the large gear, which pushed it out to meet more solidly with the gear from the motor. Print quality is currently back to where it was before the problem - no skipping, no under extrusion. Major kudos to you Anxjfarnorth, for locating the problem.
  4. Not mounted to the machine. I've got one nut that keeps coming loose and I was too lazy to glue it, so I took the thing off each time...always thinking that would be the last time.
  5. When I was trying to nail down the problem I started with it in the middle, started a print, worked my way all the way to the bottom then back to the top as the print was happening to see if it would make a difference, but it didn't seem to make a bit of difference. Good eye though!
  6. I'd love to - I just don't know how to fix the problem. The gears are too far apart, and there's no problem with any part of it not being tight enough - the gear just isn't thick enough. The two gears only overlap by around .8 mm, so it keeps skipping. It's under extruding constantly. This is what's happening (sorry about the radio being on): http://www.larsgrantwest.com/p788332907/h7398E444#h7398e444
  7. I've taken the feeder apart and put it together six times now...and it's definitely that gearing that was the problem, so I'm grateful for the help pinpointing the issue. I think I'll go back to the old feeder - then try to print one of these: https://www.youmagine.com/designs/alternative-um2-feeder-version-two https://www.youmagine.com/designs/yet-another-ultimaker-2-feeder I really like the idea of being able to watch the filament going through. Makes it easier to see what's going on. Now I just have to see what parts of the upgrade kit I can keep and what I have to change.
  8. Here's a video. This tolerance I mean. I had it tightened for the first time at the bottom! Ah! That makes sense. The plate on mine is on nice and tight, but there is still not enough connection between the gears to stop the skipping. :(
  9. So you upgraded a UM2 to a 2+ with the extruder upgrade kit, and now went back to the old black feeder? Did you also have to change the print head back? I got the upgrade kit ($395), but that included the new print head and fan and Ollson block. Did you just leave those on? I'll do that - though it'll suck to go back to grinding filament, maybe that'll last long enough to try one of the other downloadable filament feeder upgrades out there.
  10. Do you mean the metal plate the filament feeder attaches to the ultimaker with? If I didn't have that on there I could see it working...but then I'd have to figure out how to attach the feeder to the ultimaker. Hello, My English is (taken a translation program to help) not good. I had a similar problem. The mistake was having the adapter plate much tolerance (big holes), and I had screwed my adapter plate at the bottom. Loess times the four screws slightly (so that it can just move so) pushing the feeder back on it and try to push up. I hope it is understandable.
  11. Wait - so you put the original feeder back on? I had grinding with mine - but I'm tempted to do the same thing just so I can print.
  12. Did you read the post on the popping/skipping? I think that's more likely the problem you're seeing. I took my feeder box off and took some measurements and it looks like the two gears barely cross each other - and in fact I can turn the slotted screw head that turns the gear and I get the same skipping - with no filament in the feeder. I measured less than 1/32" of overlap in the gears, so if there's much pressure at all it just skips. The overlap on mine is less than the thickness of the metal plate the feeder mounts onto the ultimaker with.
  13. Okay - I took off the feeder and did some measurements. if my feeder is flat/flush against the metal plate on the back As it turns out - overlap between the two gears is barely 1/32" (around .8mm) - so any shimmy at all and the thing skips. So Ultimaker crew - we need a new gear, or some alternative solution. I'd print one to go over the old one - but at the moment I can't print.
  14. This post interested me - and seems like it might be on the right track for my issue, but here are some photos. hopefully some show what you're after. https://ultimaker.com/en/community/20570-loud-popping-from-the-feeder-after-ultimaker-2-upgrade?page=1&sort=#reply-143880
  15. AGH! So that is the problem - Not sure how to fix it because neither gear on my ultimaker seems to be able to move in or out, but if I turn the little slotted silver head on the back of the feeder it's causing the same issue - but skipping every 1/4 turn or so. Maddening because everything appears to be snug. I'm going to pull the feeder off again to see if I can get them closer - but I don't see how I can.
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