@lightshadown Thank you! It is quite amazing to watch the print develop. Yes, like a dream. Like magic.
The part cooling fan plays a huge part in the ability to bridge and print cantilevers without supports or should I say removable supports as really they are self supporting.
As the bridge/cantilever angle approaches the horizontal printing plane there will be small loops from printing in air at a distance greater than the width of the nozzle but by the second or third layer at 0.1mm thick it is back to flat. You can see a few of them if you look carefully at the bottom of the arches. They are expected, small and easy to clean up.
If you want to see another check out this post I made earlier. No supports at all. Another Perfect print.
https://plus.google.com/u/0/113930448883604105560/posts/UnMX2vJwr9Z
Fun stuff!
@Jeff_Parish if you can make a tutorial or something like that would be incredible, im trying to do the same using ABS, but everytime i use fans the dreaded warping occurs, and if I dont use them, i cant bridge unless i have supports, not a big deal, but for display/details its allways better to dont use supports, making sure it dosent fall appart… thats another story.
@lightshadown ABS is a different animal. Typically I would not use a part cooling fan on it but you might be able to use it only on the first layer of a bridge if you can control it that precisely through your slicer. I don’t use ABS because of the warping and cooling problems you list. Larger prints can have stress concentrations generated as the geometry changes causing parts to split. I find PLA works great for display and high precision tight tolerance model kit parts. It is much more forgiving and produces a harder more rigid part. Not tougher, but harder.
As for falling apart see how your filament calibrates. That will help zero in on thermal behavior and eliminate under or over extrusion.
What kind of tutorial are you looking for? Someone already did a tutorial on calibrating using the clip system I mentioned earlier. Is that what you are looking for?
@Jeff_Parish many thanks for the detailed answer. Best regards
Awsme …i want to learn in details abt 3d technology