I gave up on printing the roof when it was about half way done - after about 3 hours. I printed it at 60mm/s, 0.06mm layers (to try to give it as good a chance as possible of printing the almost horizontal struts in the scaffolding), with a single perimeter wall (0.65mm as my nozzle is larger than standard).
I printed it vertically, in the end, oriented as shown in this picture: cropping off 1mm or so at the bottom to get a flat edge on the print.
The separate scaffold structure on the left section of roof came loose during the print as it was barely attached to the main roof panel - it wobbled a lot, and just turned into a blobby mess. So I removed that. The rest I cleaned up a little by using a scalpel to remove some of the worst stringing. But it's still pretty rough - you could maybe dremel it a bit - its pretty sturdy once it's all connected up.
You might get better results printing slower, or cooler - you'll need to experiment, as we've already said. Finding ways to slice the model up into flat pieces that are better suited to printing will be critical - especially for complicated and fiddly parts like this scaffold under the roof.
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illuminarti 18
I've looked at these some more, and I'm actually running some test prints at the moment. But even in these simplified forms, they are going to be very hard to print.
Printing with support doesn't seem to be an option - the parts that need support are very thin - such as the supports under the roof - and so very hard to separate from any support that gets printed under them (I tried). Perhaps it would work in a dual nozzle set up with a soluble support material such as PVA in the second extruder. But using just one material, mostly seems to give a mess if the print relies on support.
(Another problem is with the model - it looks like the struts that make up the roof section are separate objects that intersect one another; Cura can fuse these together ok, but it's support generation is a poor at present. On the other hand, Kisslicer seems to do a better job of generating support that might be removable - but it can't deal with intersecting struts, and generates the nodes where they intersect as empty, so the struts don't actually join up).
But without support, the problem is that there are almost no flat surfaces from which to build. The window section has a very slight curve to it, so it can't be laid flat on the bed. If it was flat, on the back, such that the lower 'wall' and the ladder part could both touch the bed, it would print great. But it isn't, and they don't. So the best hope of printing it looks to be to stand it up on the longest edge, so that the only bridging to be done is the two long strips - and those are laid over the top of the smaller slats, so they don't have to stretch over as much empty space to print. Even then, its a bit of a stretch.
The Roof has a curve and twist on the outside that prevents you from laying it on that side. That might be a candidate for some support, as it would be relatively easier to remove from a continuous surface, but you'd end up damaging the most obvious visible surface quite badly that way.
In addition to the support struts having modeling issues, they're also very thin, even printed at 150% scale. The printer doesn't do particuarly well at printing very small cross-section parts like that - especially when those parts are suspended in mid air, with little support. Perhaps printing the whole thing at an even larger scale might help. Or deconstructing the support lattice into simpler flat parts, and then assembling them afterwards?
All of that said, I'm making some sample prints now - I'll upload them a bit later.
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