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Internal bridge is critical, it needs its own settings.... Density, Speed, Flow, Fan speed. Its a primary line type for god sake! #2186
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I totally agree. There should be more settings for this. This is especially important for trickier to use plastics like ABS, Nylon, etc. Even when I'm printing something like PETG I want absolute control over the cooling parameters. I don't need the fan speed to kick up to 100% on an internal infill bridge. |
I also have several complications printing an basic rectangular shape, with two (≈10°) slopes on top that are going inwards and meet in the middle of the object. Just like a "v" if you look at it from the front, only that the "v" is cut out of a rectangular block. |
I think your problem is not the lack of settings, but the fact that Orca doesn't use internal bridges for those slopes at all, see: #636 |
Internal bridge flow parameter has been added in 1.8.1+ In addition the option to disable thick bridge for internal bridges has been added. These two options have the largest impact on external top surface quality. |
It will still be good to have:
I agree that it would be nice to have some control over the internal bridge direction. Slightly counter intuitive is that it should cross the longest edge. This is because (in line with my testing) internal bridges tend to turn into a surface artifact when they fail/miss the connection to an external wall. Then the hanging end curls up which can 'snow-ball' into a full on charred surface artifact. I've done most of my testing with ABS. the logic may be totally different for TPU. |
I'll add that on my large prints, where the infill is finished and moves to internal bridging, which uses the default external bridging fan speed settings, it causes the corners and edges to warp on my ABS/ASA prints. The blasting fan spends more time in the corners while trying to over-cool the internal bridges. |
Yeah, Im an ABS guy too. I imagine people who print PLA must think we are crazy for wanting this level of control, but with ABS it is the difference between success and failure. 100% |
Yes, needed... anyway we are closer, v1.8.1 added many improvements for this. I hope we can get this soon :) |
What about the way Cura handles multiple layers following a bridge? This has a huge impact on bridge quality when printing at higher speeds and acceleration. Going from a bridge to 300mm/s on the next layer is brutal on the bridge. More details here: https://community.ultimaker.com/topic/22195-introducing-the-experimental-bridging-settings/ Is this related, or should I start another thread? |
I would like to add that the number of wall loops, top shell layers or bottom shell layers shouldn't effect where a bridge is truly needed. The ultimate for me would be able to paint where bridges are needed (if exposed) similar how manual supports can be painted. |
My point is that we need at least:
Combination of these 2 parameters would lead to better top surface quality. |
Just want to bump this as I'm currently working on a project that requires additional internal bridging control and so I have had to revert to using cura. Density and angle for internal bridging are critical settings especially for ABS in my testing. |
Separate settings for "internal bridge fan speed" is must. |
Bumping this up as well, this does matter when dealing with ABS/ASA and it seems a bit silly that external and internal bridges have the same fan speed since I'm obviously going to need a fair bit of fan to try bridge 3cm over open air while I don't think internal bridge cooling ever an issue for any infill >= 15%. |
Bump. I'm trying to get good top layers in PC atm. The current issue to poor internal bridging. The external bridges look fantastic when using thick bridges at 50% density. It would be really helpful to be able to set the internal bridge density to 50% as well. |
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Internal bridge is a critical feature, and a primary line type like bridge, solid infill, perimeter etc..
Depending on model and material it can have very different requirements. Bad internal bridges lead to missed edges and create surface artifacts with burnt discoloration.
I've tested this extensively in Cura that has full internal bridge settings.
Internal bridge needs its own settings.... Density, Speed, Flow, Fan speed
Which printers will be beneficial to this feature
E.g. Voron/Klipper based printer/etc...
All
Describe the solution you'd like
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Internal bridge settings....Minimum is density, Speed, Flow.
Describe alternatives you've considered
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No options currently. Though I'll have to use Cura for models and materials that have critical internal bridging needs.
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I really feel this is a must. Its like not having a setting for other primary line types like bridge, solid infill, perimeter etc. Internal bridging can be make or break, and is best not left up to chance. I hope this will make it in. People underestimate how critical it is.
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