Image 1: after a little more than 24 hours of continuous printing my Atom2 finally finished this part. It is 200mm high and about 120mm wide at the widest part.
Image 2: The printer just after finishing the print.
Image 3: Why does the Atom2 say 16 hrs 6 minutes when the actual print time was a little more than 24 hours?
Image 4: There are a number of fine "hairs" inside the part that the printer made when it moved from one side to the other. Would increasing the Retract value stop this from happening?
Image 5: These are the Kisslicer values I used for this print. But what is the best setting? The printer moved at 23mm/sec but I think it can go faster - but how fast? I don't want to risk the chance of a stepper motor over-run.
Overall I am very impressed with the Atom2's performance. It ran continuously for more than 24 hours and never had a single problem. The finished part looks terrific and I will definitely be printing more.
翻譯年糕
Bato Wang
2015-04-29 21:40:23
"Hair" is what we called string....so you should check your "destring" settings......the nozzle limitation for 0.2mm layer is about 60mm/s, it can certainly go faster, but the quality is obviously impacted. The rest is depending on how well adjustment for the system.
Birk Binnard
2015-04-29 22:47:51
Thanks Bato. I've changed Destring Suck from 6 to 10 and increased the speed setting from 40 to 50 (23 to 27.5 mm/sec.) This time I'm printing a smaller part.
劉宏威
2015-04-29 22:56:04
It's feel great, saw my blade seat on your ATOM.
:D
Bato Wang
2015-04-29 22:58:48
Actually, My Suck" is just 5 and the speed is 120.... you can try it.
Birk Binnard
2015-04-29 23:20:13
Setting Destring Suck to 10 is a bad idea - my filament just broke at the extruder so I have to find a way to get the broken part out of the teflon tube. This is going to be tricky.
I've set it back to 5 per your suggestion.
Bato Wang
2015-04-29 23:28:10
Suck 10mm is kind of too much, melted and expanded PLA will clog when they contact upper cold area.....and most of the time, it is very hard to pull it out....during the very early beta period, I was suffer from this, because 10mm suck is safe for 1.0. In my case, I replaced the whole inner PTFE tube to fix what I did.
Birk Binnard
2015-04-29 23:45:40
I'm back in business Bato - thanks for the explanation about the Suck value.
What I did to fix the problem was to disconnect the teflon tube from the extruder and use a piece of brown filament to push out the broken part of the orange filament that wa
s stuck inside. Of course I heated the hot-end up to 200% first.
It was actually quite easy to push out the old filament. When I saw the brown filament coming out of the extruder I knew I had fixed the problem. So I then re-loaded the orange and am now off printing again.
Birk Binnard
2015-04-30 04:12:22
My next print - a cup or tumbler shape - is 59% finished now and it's clear that Destring Suck = 5 creates more hairs then 6. So next I'll try 7 and see if that is enough of an improvement.
Birk Binnard
2015-04-30 08:20:52
This is my second print - it took about 9 hours. Only problem was a fairly large number of strings on the inside as a result of Destring suck = 5.. I removed these with some light sanding. Next print will try Destring suck = 7 since I already know 6 creates strings too.
昭堂張
2015-04-30 08:41:43
people say that lower temperature will help.
Birk Binnard
2015-04-30 08:45:34
Very interesting. I'll try 190 degrees next time. Thanks for the tip.
André Medborg
2015-04-30 15:18:49
Birk Binnard
For D-string i use 8-8-3 with a layer thickness of 0.2 that works really well and there are no hairs at all.
André Medborg
2015-04-30 15:37:39
I made an experiment with a very complex model to see how the printer handles in the extremes. The G-code was 150 MB. Layer thickness was 0.1 and D-string was 8-8-3. Speed was 20. As you can see the amout of hairs looks a bid like a spider gone crazy.
For some weird reason the lower part are more fragile than the upper part wich is very fine in detail. The print took 42 hours to complete and there were no problems on the way. Damn its a good printer!
André Medborg
2015-04-30 15:38:57
André Medborg
2015-04-30 15:39:41
André Medborg
2015-04-30 15:41:36
Clarence Lee
2015-04-30 15:42:14
BTW, check the push-fit. Make sure it's not moving up & down with the retraction. If it's moving, try to use some wire to tide it up.
André Medborg
2015-04-30 15:42:16
André Medborg
2015-04-30 15:45:34
I guess this model would print better with support made in Kiss, but I wanted stress the printer.
André Medborg
2015-04-30 15:46:37
Andrew Lee
2015-04-30 15:46:56
this is great Birk! glad to see your printer is working now and very stable
Clarence Lee
2015-04-30 15:59:54
The release sleeve might move.
Clarence Lee
2015-04-30 16:01:50
André Medborg
Actually I would like to go with the support like that, it's much easier to remove & still good result. Is it generate by Meshmixer?
André Medborg
2015-04-30 16:19:35
Yes the release sleeve by the feeder is moving, but I have tried holding it back with two fingers and it really wants to move. Are you sure it should be still. I mean it makes sense, but the prints I made this far looks really nice (for the most part that is).
André Medborg
2015-04-30 16:23:34
Clarence Lee
I dont know how the support for the dragon is made. I found on Thingiverse But I do know that it takes a lot longer to print than conventional sparse support.
Clarence Lee
2015-04-30 16:37:59
It's ok to use some removable wire or cable tide to stop it moving for better retract performance.
Birk Binnard
2015-04-30 17:26:14
Thanks Andre - I've got a 6 hr. print I will do tomorrow with 8-8-3. Will post results here when done.
André Medborg
2015-04-30 18:16:53
Clarence Lee
2015-04-30 21:30:20
André Medborg
2015-04-30 21:38:34
