Bridge Speed within Supports in Bambu Studio

I am experiencing an issue with the bridge printing speed within supports on my Bambu X1C using Bambu Studio. Instead of printing bridges within supports at the designated bridge speed, it uses the support speed, resulting in lower-quality bridges within the support structure.

Is there a way to reduce the bridge speed specifically within supports to improve the print quality? Any advice would be appreciated. Thank you!

what you’ve circled is what you’ll get regardless of speed.

Supports print like that to reduce filament needed and to aid in removal, if I’m understanding your question vs example correctly.

Thank you for your reply.

Are you saying that the bridging within the supports needs to be printed at high speed?

I have a specific purpose in mind, and I’d like to slow down the speed to print it as a clean bridge, just like an actual bridge.

Welcome to the forum!

The slicer image is confusing, it looks like the first layer, by definition there cannot be a bridge on the first layer.

I guess you might be using slim/snug supports which can contain bridges within them to further reduce filament use, you could just use a different style there.

Or include images that evidence the problem better, in printed form if possible. I don’t use supports much but I have seen the bridges within supports and they are usually so small that having some issue with them likely suggests some other issues like wet or uncalibrated filament.

Hi, I’m a co-worker on @chibiegg 's project and I’d like to provide some additional background information.

To improve the separation between the support structure and the output, we are experimenting with using a different filament specifically for the boundary surface between the two.

For some reasons, we are using a standard support structure instead of a tree-like design. This has led to a three-layer surface structure appearing beneath the bridge structure, as illustrated below:

+----[ 3. Bottom of the bridge structure ]----------+
| ---[ 2. Surface material] ----------------------- |
| +--[ 1. Top of the support structure] ----+-----+ |
| |     |     |     |     |     |     |     |     | |

From our observations, the [ 1. top of the support structure ] acts as a kind of bridge itself, which is printed at a relatively fast speed due to having only one global speed parameter for the support.

This results in a rough surface of [1], almost torn apart actually, that hinders the proper establishment of the [2. surface material].

Therefore, we are looking for parameters or settings to slow down the printing speed of the bridge structure within the support individually.

Let me know if you need more info to make it clear, thank you.