Kisslicer + bridges. Anyone have advice? I have no issues doing this bridge in slic3r.
@Patrick_Ryan you want to try this bridge torture test?
Print the model laying on it’s side or upside down.
It’s a bridge test model. It has to be printed that way.
Ok. I got the idea. 
Gotta ask the obvious: speed and temperature set the same in both slicers?
Can you add temporary support trusses which you remove once printing is complete?
@Peter_Zsiros Again: this is a test of bridging capability. Bridging without support is the point of the test.
Can u post a pic of a successful bridge test in slic3r?
If you have a cooling fan, is it running in slic3r but not kisslicer?
Kiss slicer has no bridging logic, so it’s not going to produce good results in that test.
This is a known limitation of KISSlicer. It’s at the top of the wishlist that is supposedly being worked on. You can sort of cheat bridges by having a higher perimeter count so that the perimeters would essentially run as bridges in the direction of bridging direction, instead of filling in as a standard solid infill. But if I were to print something like this for keeps, I’d use KS Pro and its multi-extruder support capability to get the print done.
@Joseph_Chiu Thanks for that definitive answer. Looks like slic3r will be needed if large bridges are used.
@kenneth_rooks I will post pics of the exact same model printing with Slic3r and tag you on them. It prints %100 successfully, despite the dizzying length.
You should add SUPPORT to be able to print this model.
It’s known limit of kisslicer. After model is sliced I change extruding speed and flow rate for bridge layers to my bridge settings. I use special script for it.
My bridge test shows that I can’t print bridge faster than 10mm/s
For what it is worth, I fail the same test miserably while using Cura, but can do it just fine on Slic3r.
@NathanielStenzel good to know about that short coming of Cura. Haven’t really used it much, myself.
@Nathan_Ryan
It’s available here - https://bitbucket.org/TedBeer/calibr3d
Script setar.py (+setar.ini) - to calibrate printer, tedjust.py - for g-code post processing. But the documentation needs to be improved.
tedjust.py script is better described here:
This problem was reported 5 years ago. pjr still hasn’t fixed it yet. I like so much about KISSlicer, but I may have to hold my nose and use Cura for anything that needs bridging support.