阅读其他人的帖子，我一直有和他们一样的问题，在尝试了所有的建议和花费足够的钱在另一个打印机更换挤出机几次和吨喷嘴更换。我的打印机是Cetus3D Extended Mk II，带有加热床和GeckoTek Ez-Stick热表面。我通常使用0.4喷嘴，因为我从来没有能够让0.2工作，我使用0.6当我用完0.4喷嘴。
最初我的打印机是防弹的，每天都可以打印，可以使用任何品牌的灯丝，无论新旧。它刚刚可靠地工作，但在过去的一年里，它确实堵塞了，迫使我更换了喷嘴。我没有任何mod在我的机器上，除了一个电缆指南，以保持彩虹电缆在顶部失去或捕捉在垂直轨道上，我只使用cetus软件v2.2.28.44在Windows 7 64位。
无论如何，当清洗挤出机齿轮和安装新的喷嘴和干燥的长丝时，通常可以很好地打印。有时，如果打印很小，它将完成打印，但较大的打印或许多打印在打印期间无法挤出，导致以下结果:
在停止挤压前，打印良好，干净，无挤压变薄、斑点、剪切等痕迹。起初,我认为这可能是灰尘或粒子堵塞挤出机提示但我注意到过去几个月经常“muffin top”blob塑料喷嘴轴的顶部,我通常不得不切断这把喷嘴替换它,脱下挤出机盖,清洁塑料齿轮的刨花。
下面是一张显示这个斑点的近距离照片，你可以很容易地看到，在哪里齿轮齿抓住灯丝努力试图拉它通过，在哪里它strats失败，只是graway在灯丝。这是典型的其他喷嘴，我也把它放在一边。所以这个问题对我来说不是一次性的，而是一个持续的问题。我在想，喷嘴的钢部分的顶部，在灯丝进入积累了太多的热量，使灯丝在进入之前软化，导致它弯曲，形成斑点，然后阻止完全挤压。也可能是喷嘴内的熔融塑料挤压不够快，在长时间的打印过程中，它会积聚并溢出顶部，导致卡纸团。这很难说，也不确定。我没有办法拍摄一个特写来显示发生了什么，而且我已经花了太多的时间来诊断这个问题。
我的一些失败的喷嘴有同样的问题，暗灯丝的是一个好的碳纤维灯丝。
我刚刚注意到的拼图一块拼图是一个泡沫。喷嘴末端有气泡斑，在打印期间被拉出橡胶帽，但可能发生各种问题。但是，请参阅下列故障打印的特写镜头，以便在其失败的时间上打印上的单个“泡沫”。没有其他泡沫，对我来说是显而易见的。它是一个复杂而大型的模型，需要大量的支持秸秆。实际上似乎当打印失效时，通常在挤出层具有大量空隙的情况下，如密集大面积的支撑或填充图案。如果通常可靠，它是平面固体层的打印。But I’m not printing solid cubes all the time and need organic model prints and very complex single piece shapes.
Plus even with the heated bed I need to use rafts to get good start layer adhesion but you can see here that is fine and it failed about 12mm up the support structures and none appear to have been bent over its all fairly solid. I do notice removing supports structures and raft especially can be difficult as they fuse to the model more than they should. I hope you can improve support building in your software and increase bottom layer thickness on models so they are stronger and dont delaminate as if they were the raft boundary. Direct printing to build surface without raft rarely works as it either doesnt lay a strong layer or starts to peel at a corner of the model, so I rely on rafts to get reliable prints and reduce waste.
I want to get back to the early days of my printer where I could put ANY PLA filament in and and model and it just printed perfectly on the default PLA setting for weeks on end non stop. I do a LOT of printing and the Cetus is my only printer I’ve been able to rely on. I also have a physical disability where my left arm doesnt work so constant adjustment and tweaking needed with other printers wont solve my need. The Cetus is pretty much perfect and I know it can work reliably but since mine no longer does with even well dried new filaments with a new extruder and nozzle.
考虑到以上所有情况，我想知道是否我们不能调整软件或固件设置，或者可能是主板问题是问题的根源，如果它会再次出现在Mk III的轨道上，当它可用。在此之前，它的质量和可靠性都非常好。我不知道它是什么时候开始的，也不知道是否有什么变化导致了它。我知道这可能不是一个足够好的解释，以准确诊断问题，以找到解决方案。打印机在我的客厅里，所以它周围有良好的清洁空气，没有宠物、孩子或吸烟者等，环境温度全年相当舒适(没有空调)。< / p >
Steve
Btw, I’ve only once tried TPU rubber filament which was too soft to push through extruder and never used ABS. I’ve only used PLA and bought many brands from ebay as well as good quality local brands and its been very consistent with all of them. The cheapest ebay generic stuff works but strings and blobs often. Local brands have given me the best results in finish like X3D and Aurum. ESun I would rate about 40%, usuable but not great finish. And like I said at the start I go through a lot of new clean nozzles often, three this weekend just trying to get this one model printed, so you can appreciate how frustrating this has become. I dont want to give up on the cetus as I havent experienced another printer that can compete on reliability with minimal maintenance (important for me with only one arm).
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