Dual Extruder setup: What am I doing wrong?

Support ticket or email seems the way to go.
Your dual extruder homes correctly and the right nozzle moves in the dualextruderhouse from top to bottom and top again?

There are a few similar topics right now, let us know what helped you!

Any update? I am considering the dual extruder and I’ve been following post, including yours, from people who have already purchased. Curious if you’ve made any progress w/ tech support.

Sorry, no. It’ll be another week or so until I get back to it. I have a big, multi-part print I had to get going so it would finish before everyone starts leaving for Christmas.

I should have some news before the holidays.

Wow seems like everybody has problems with the DE. I ordered early and got it early. I didn’t set it up right away and ordered the free upgrade kit.

When I first set it up (no upgrade kit yet), I had all the problems you report. First off, the breakaway PLA requires 225 and yet the XY calibration (built in program) uses 200 - no bueno. Using the live adjustment does not help because each time it swaps extruders, it goes back to the pre-programmed 200. So as others said, use a standard light colored PLA for the right extruder when calibrating XY. Silly considering they ship you the breakaway white PLA with the DE.

I had many other problems related to apparent heat soak. Both left and right extruders kept clogging on me. And I had the buckles popping free. I found buckle clip wedges online and printed those out which solved that. Eventually I got the replacement kit (new door, silicone buckle stiffeners, etc.) and this stuff helped but did not cure everything.

I opened a support call and began a long cycle of testing what they told me. At some point I also started getting the filament runout errors (the kit supplies a fix but I never installed that). Long story short, I never got the results they did even when they supplied the gcode. So they sent me a replacement DE - new door, fixed runout sensors, redesigned buckle clips, and somehow no more clogging! I was able to get a finished print using their supplied gcode.

Even with a much more functional DE, I was a bit disappointed with the ooze (using Snapmaker breakaway PLA in the right extruder). They instructed me to always use the Prime Tower “Dual Extruder Helper” and I finally got some successful prints. It is such a waste of filament, but if your right extruder oozes much during extruder swaps, it is a must. But at least I am no longer getting clogging, buckle popping, or faulty runout sensor failures.

Some have reported “no problems” with the DE. But for the cost, for me at least, it has been quite a pain.

I can relate, the conundrum with the DX’s teething problems was considerable, and not appropriate for such a pricey device. Still, Snapmaker acted responsible IMHO by sending out the replacement kit for free. Mistakes happen, and as long as they take responsibility, I’m inclined to forgive them.

The oozing is nothing Snapmaker specific - it is a general problem connected with the typical FDM hotend design, where the nozzle is always open. With the 0.4 mm nozzle I’m using aggressive retraction settings, up to 8 mm retraction, depending on material. The touchscreen always warns me off, but I ignore this warning. I even think the warning is no longer correct - it dates back when Snapmaker still was trying to figure out the clogs many DX users had, which ultimately turned out to be heat creep and are successfully addressed by the new door. So IMHO the warning can be removed from firmware…

I had filament get stuck behind it and to the sides… caused it to jam up. Make sure it’s clean in there. 18.1 works.

Thank you for the feedback. We are sorry that the originally provided breakaway support material for PLA added the trouble for the initial setup. We’ve updated the instructions in April, 2023. Here are the updated content in the Quick Start Guide - Use two standard PLA filaments to print the calibration test model:

So, OK, big update for anyone that still cares:

I had a big job I had to knock out - a huge print split into 8 pcs, with each piece being ~850g of filament and having an average run time of ~48hrs. Figure nights and weekends, throw in a couple holidays, a couple mishaps that I had to recover from, and here I am two months to the day later.

I started over from Step 1 with the dual extruder: Update firmware, make sure Luban’s up to date, install the module, power it on… And it worked on the first try! I loaded up a couple spools of PLA and it loaded properly. I ran the calibration sequence and it was totally by-the-book.

I’m not sure what changed between then and now. Maybe I was just too excited and skipped a step or something. I’m sorry for the anti-climactic ending to this saga, but it’s all I got.

Ugh! I was hoping for a more climatic ending. I’ll just have to try everything again too. Did you have the correct firmware?

I don’t recall what version I landed on in all I was doing to try and get it going back in November, but updating to the latest & greatest was the first thing I did yesterday.
I can’t say that was the fix, but I don’t think it hurt anything.

Hi Hauke. I got my DE this year and struggling as well with the configuration for proper printing (which in these times of bambu labs and alike is unnaceptable, but here we are). Im trying my luck at the forums as the support help, though responsive, hasnt been able to advance my situation in any regard. I see here that many speak about a replacement kit that was sent by them. In my case they just sent the proximity sensor, which solved nothing at all. Can you tell me what this kit contains and what it was before. I cant tell just be looking at the posts here if my DE was already updated or not. Best

The Kit contains this: Ersatzsatz für Doppelextrusionsmodul - Snapmaker EU

The main item was the new door with the added air slits. If you have these holes already, you may not benefit from the Kit too much.

But to really judge, you’d need to describe your problems in more detail.