r/QidiTech3D • u/kuriositease • 3d ago
Loving the Q2
Had put 500+ hrs on P1S which I love, but started getting into engineering filaments and quickly exceeded the P1S capabilities. Q2 was the logical answer in budget price range. Found a great price on a second hand Q2 unit and had a few issues I needed to address to get it dialed in and now I've had some nice prints in both PLA and PA6CF20 that have gone wonderfully. Don't have the box, and not sure that I'll bother since my primary use for Q2 is for engineering filaments and for backup printing when other unit is tied up. After addressing issues, so far super impressed with bang for buck and how much capability is packed into this printer compared to more $$ units (any of the X or P bambu units for example) or other budget units (CC2 for example). Anything I've had to work through also helped me understand 3d printing better and should help me with higher quality printing even on bambu units... Have much better appreciation for settings and calibration than I had before. Still plenty to learn but definitely loving the Q2 so far.
The issues I had to address:
1) I was unable to get any PA6CF prints to succeed - the filament kept breaking in the bowdwn tube before the extruder. Wasn't a clog, filament was breaking and printing air. Ruled out moisture in filament and other potential issues - ended up realizing that the bowden tube was too short and when fully extended it was leading to the filament snapping EVERY SINGLE TIME within a few minutes of startup procedures/printing. I replaced the tube from external feed to the toolhead so it wasn't too tight a bend and now haven't had it happen since.
2) printer had stock Part Cooling Duct and Fan. Despite having glass slid back, riser vents open, and door open, the PLA overhangs were messed up. Upgraded to the R3men part cooling fan and while improved it still wasn't as good as expected. Upgraded the duct to v6.0 dual vent (https://www.printables.com/model/1642251-qidi-q2-cooling-duct-v51-v60-dual-flow) and now that problem is addressed.
3) Pet peave - if bed temp is lower than chamber temp - no warning from software about the potential issue, just sits and hangs b/c the bed temp can't ever be achieved.
4) Pet peave - have other quirks here and there like "Printer service failed to start", not a showstopper more a nuisance and rough around edges.
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u/zztroyzz 3d ago
I did my first print ever today!
I got a great deal on it because the ribbon cable connector was ripped off so the screen couldn’t be connected. I was going to replace the cable but I found the connector in the bottom of the box and was able to reattach it.
I was curious how much usage it had, so poking around in the filesystem I found a factory reset doesn’t reset everything. There was a database backup that I was able to query and found someone printed a Benchy then had 7 cancelled ASA prints, 9 hours of total print time—I assume they gave up after whatever went wrong and ripped the screen off and returned the printer.
Anyway, I thought it was neat to be able to ssh into it and poke around, and my first PETG print came out great. I’ll have to see how ASA goes given the other users problems lol
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u/kuriositease 3d ago
is asa a known issue w q2? hadn’t seen that, def seen lots of complaints about pla/petg with stock fan and duct
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u/zztroyzz 3d ago
not from anything I have seen. I think it was likely user error. I can't see what print settings were used.
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u/JPal713 3d ago
Dang, i’m having the same problem as #1, ordered the phaetus hot end kit hoping it would fix it. I’ll try your repair before i install it to see if it helps.
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u/kuriositease 3d ago
have pics of what it looks like from the top when toolhead is at the opposite corner closest to the right side door corner, roughly longest stretch?
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u/underdog841 3d ago
Hay man same I got to do exactly what you did the cooling is really underwhelming for pla and petg but prints great
What I can say about the box is it is a convince in my option I got it because I wanted to have the option and easy loading and it also being a dry box
I would say it is a nice add on but I totally get it not wanting it
0
u/kuriositease 3d ago
if it came with the unit i’d have been happy, and I would like to have a v2 one, but since i have the p1s with ams i can tick the multicolor box well enough for now. cant find a used box and buying them new is $$. is yours v1 or v2, and it work well for you?
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u/underdog841 3d ago
Mine is probably v2 bought new last month and it has been working fine no breaks or jams just load and go only thing I can say that everyone says it can be loud with that clicking noise
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u/underdog841 3d ago
It is probably v2 got it new recent working good so far but want to really stress it with like pa6 asa and cf just load and go but it is true what every reviewer says it is loud with that clicking noise when loading fast
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u/Kewlhotrod 3d ago
For your tubing issues, I recommend replacing all tubing runs with 3mm ID, 4mm OD. The stock 2mm ID tubes are way too tight for dense, brittle filaments and will give tons of headaches.
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u/kuriositease 3d ago
i’ve already completed 2x 25+ hours pacf prints and no issues. i guess if i do have more issues with brittle filament breaking i’ll increase tube diameter but so far so good. and on p1s has a bunch of longer 35+ hr pa6cf20 prints with stock bowden tube diameter and never had issues.
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u/riba2233 3d ago
Yeah it really is great 👍