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What constitutes bridging in Ideamaker?

Posted: Mon May 21, 2018 8:00 pm
by detroitus
I'm trying to figure what the technical criteria is for Ideamaker to consider an unsupported structure a "bridge" when slicing a model. I have had many models with largish, unsupported gaps that my N2 should be capable of bridging without trouble, but the slicer hits it with a "solid infill" layer. In many cases that's not a problem, but it becomes very problematic in some cases, especially when printing parts using "concentric" infill.

I sliced several test pieces to show what I mean. In the image I've shown two consecutive layers of the test parts. The second image is the layer where bridging should occur. I'm trying to understand this completely. From the images, it appears that the software only recognizes "bridging" when the connection is being made between two completely isolated parts (such as the two independent islands, the letter 'A', or the random shape with the island in the middle). Is this a standard among splicer software or is it unique to IdeaMaker?

Any enlightenment would be greatly appreciated.

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Re: What constitutes bridging in Ideamaker?

Posted: Tue May 22, 2018 6:17 am
by Vicky@Raise3D
Would you like to share your .stl, .gcode and .data files to test with us?

Re: What constitutes bridging in Ideamaker?

Posted: Tue May 22, 2018 1:09 pm
by detroitus
Sure. I was more looking for an explanation on how the software functions, though. Does it only recognize isolated features as needing "bridges" or is it supposed to be any unsupported structure of significant size?

Re: What constitutes bridging in Ideamaker?

Posted: Wed May 23, 2018 10:28 am
by Vicky@Raise3D
I'm so sorry that the current version of ideaMaker only takes isolated features into consideration.
Will feedback you needs to software department. They may can open more in future versions so that the bridge structures can be generated properly on your model.

Re: What constitutes bridging in Ideamaker?

Posted: Wed Jun 19, 2019 6:29 pm
by se2013
Even after reading this thread I still have no idea what scenario would be considered "bridging" in IM. Logic suggests a "bridge" would be a horizontal plane spanning open space between two or more objects. Is this not what "bridging" means in IM? Can you give an example of what "bridging" looks like in IM?

Re: What constitutes bridging in Ideamaker?

Posted: Fri Jun 21, 2019 7:05 pm
by Noren
I would also like to know what features are identified as bridging. I seldom see parts of my objects marked in the preview as “bridging”.

Re: What constitutes bridging in Ideamaker?

Posted: Mon May 10, 2021 7:20 am
by toddanglin
Just another Google searcher arriving at this thread with the same question. How do you get ideaMaker to treat a horizontal (90 degree) span between two points as a bridge?

Re: What constitutes bridging in Ideamaker?

Posted: Tue May 11, 2021 5:43 am
by Vicky@Raise3D
Normally when a structure is supported at both ends, it will be consider as bridging.

Re: What constitutes bridging in Ideamaker?

Posted: Tue May 11, 2021 7:24 am
by toddanglin
Thanks, Vicky! I'll have to do some more investigation. In my recent model, I had a cylinder spanning a large gap (80+ mm) parallel to the build plate (90 degrees) supported by other structures on both ends. No matter how I tweaked the settings, the slicing preview never showed bridging operations, so I'll clearly have to experiment further.

In this case, I gave up and added a thin 0.8mm support wall to my model so bridging wouldn't be necessary. Print was successful. :)