I now printed a fan shroud (https://www.thingiverse.com/thing:878681 7) which cools the print from all sides instead of only one. It’s not exactly the same as shown in the link, but it overall works. It looks like the warping got reduced a lot, but it is still there. Obviously my 3d printed replacement fan is not as strong as the original one, and I am still waiting for my replacement fan to arrive, but I think that things should get a whole lot better once I get a new fan!
The only thing that I currently don’t like is the bulky design of the fan shroud. It’s almost completely flat with the nozzle and it makes it impossible to see whats going on under there…
I’ll report back once I got a new fan and eventually found a slimmer/higher fan shroud.
Agree with you on the inability to “see what’s happening”. Not too keen on my version which cover all the print nozzle. It works a lot better than the basic shroud, but I can’t watch it, so it feels a little “out of control” I may try one with multiple nozzles on the shroud rather than a full 360 “loop” to keep my mind at rest?!!
It is done! I finally printed the Marvin without any defects! It was really hard, but in the end the effort was worth it. I had to change many settings, and trying out different attempts of printing the Marvin.
Here is what I did:
I made sure to get a better fan shroud and a new fan. I’ve used a small radiator fan, which had cost me around 5€. This radial fan in edition with a new and better 360 degree fan shroud this really made a big difference!
The warping still occurred, so I experimented with more things. I ended up mounting a bigger 80mm fan to the print bed, which helped to cool the print more evenly. I also finetuned the probe offset.
The last thing that made a great difference was using a different slicer. Simplify3D, you did a great job! At first using the program seems complicated and Cura seems alot easier at first, but once I had set up everything as I needed to, the slicing and overall experience with it was wonderful. It somehow only took one hour to print, and I could go much slower and at a higher resolution, but the print came out much better than the one printed with Cura.
The print looks cleaner than it is on the pictures, seems like my camera just picked up alot of details.
I hope this will get me accepted as a hub, but I will still try to improve my prints, especially with printing even slower, maybe using a different fan shroud and rotating Marvin so its cooled more evenly.
Gonna do some more prints with different settings again tommorrow before I’ll send in the pictures for the test order but you guys really helped me out.
Looking better! Next area to check is your extruder and your filament. You may need to fine tune the screw on top of the extruder. You may have it a tad too tight or too loose which can cause some of those lines in your most recent picture postings.
You can try bumping the shell count under the layer tab in your print settings to 3. A stronger outer wall can help smooth the print a bit.
Another reason lines still may be occurring in your print is due to the filament itself. I just had a recent print turn out similar to your original posting with the lines and ruff patches. Spent my entire night last night unraveling the spool to realize that the rest of it was contaminated and unusable.
Looks way better! Printing small items is a whole new bag compared to large items. You can really appreciate that the plastic is at ~200C and it is HOT and ‘melty’!
