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In all my Blender work On and off over like 8 years or something? I started with 1.4x or something. Before the first huge interface change. I've never come across a tutorial that made use of this bisect tool. I've never had a need for this bisect tool either. DIdn't know it existed. I only learned about it right now in the last couple minutes after reading this post, and the manual.
You too can probably get quite far without using it either.
That being said, now that I know it's there, maybe I'll find a use for it one day? If I don't forget about it due to it being a specialized tool that isn't commonly used that is.
And this is a good example of what I mean when I say that you need to learn "how to learn".
Here's how I just learned what this option does:
1. Google which tool you're talking about.
2. Found the blender manual at the top of the results.
3. Launched Blender and tested the tool.
4. Hmm, tools makes a knife cut through my test cube. Changing the axis threshold value seemingly does nothing.
5. Hovered my mouse over the "Axis Threshold" option. Tooltip says it "Preserves the existing geometry along the cut plane."
6. "Okay. I clearly need more geometry to see what this option does." Proceed to subdivide the cube a whole bunch so I have said geometry.
7. Bisect again and then play with axis threshold again.
That whole process above took me about one minute. What "axis threshold" does is changes the balance between how many new vertices get added when making the cut and how much the new cut tries to not change the pre-existing geometry. I'll include two screenshots of the cube with "axis threshold" at both max and min so you can see what it's doing. Refresh the post if they're not included yet, need time to screencap and upload after posting.
When trying to figure out what an option is doing, read tooltips, look for an explanation on youtube, check the manual, and try the tool yourself on a piece of test geometry. If nothing seems to be changing when adjusting the option, you might be using it wrong and need to change your test conditions.
You're welcome, Mr. Crankypants :-P
Axis threshold at 0%:
https://steamcommunity.com/sharedfiles/filedetails/?id=2828864723
Essentially it makes the cut without trying to preserve any of the existing geometry and it adds new verts.
Axis threshold at 100%:
https://steamcommunity.com/sharedfiles/filedetails/?id=2828864895
With only a super quick glance, it seems to be making the cut without adding any new verts. There are some new edges, but the existing verts dont seem to have been moved at all to accommodate the cut.
You can see how I made the cube and tested the option, just replicate it on your end and play with it to get a feel for it.
As a beginner I highly doubt you even need really need to know the answer to this question.
I think you might focusing your attention and effort on "learning" the wrong things or learning the wrong way/ineffectively/inefficiently.
Pick some tutorials, follow along and do what they do. Don't worry if they don't go over every option of every tool they use, if they don't then it means you don't really need to know about it right now.
You need to start making things, first and foremost. You have no need to understand every tool and every option for every tool before you can start making stuff.
That mentality is actually a trap that will hold you back and make progress much harder. Form of procrastination, really.
Just start making things.
Bisect Axis Threshold: Preserves the existing geometry along the cut plane.'
The manual adds: Cut along the straight plane or along the existing geometry below the distance from the plane.
This particular setting has a reeasonable default for the tool, you will only change this in very specific situations.
What the bisect tool itself does is to allow cuting a part of a selection along a plane and then also have the option to fill the cutting plane in with a ngon.
https://i.imgur.com/yZg5tWk.gif
If you cut both INNER and OUTER and FILL you get a flat Ngon of the cutting plane.
https://i.imgur.com/KEV1Ghm.gif
If you don't activate any of them all that happens is a knife cut basicly.
Whenever tools elude you, just try around with the sliders and the options and see what they do. You can always go back one step, work in a copy or whatever. Furthermore if you right click any slider, checkboxes of the tool you can be taken to the online manual for that function. In this case:
https://docs.blender.org/manual/en/3.2/modeling/meshes/editing/mesh/bisect.html#bpy-ops-mesh-bisect
Trial and error is the key.
(I have never used bisect before, but by trial and error it was possible to deduct that one can cut a monkey in half with it, in less than 10 minutes )
It isnt about"will i be able to do something without knowing everything?" its more about "i just want to knoe my options when going on an project"
i found myself often doing something the complicated way when there was an easier way.
yeah i searched the online manual for help and tried to find a other solution online but no luck.
i now tried the option with a cube that has more segments more loop cuts if you say so and it turns out the option turns the cut into "pixelated" cuts...
no idea if that is the thing the option is suppose to do and i kinda hate it to gow with an option i just can "ASUME"the options.
Share a screenshot including the cube after using this option and the option you're talking about and maybe we can explain if and what it's supposed to do.
https://docs.blender.org/manual/de/3.2/
gladly if i knew a site to share shots.
thanks for the information and might be even useful but as soon as i hit the search options everything switch back to english or it isnt avaible in german...
Steam itself does.
Hmm, so it does. Well then you're going to have to find an alternative manual in german or you're going to have to learn english well enough that you can understand the english manual.
well steam chats support the sharing of pictures but discussions kinad let me down unless i know a site for uploading screenshots?
Upload it to your Steam Artwork section then copy and paste the link in here. Best way of doing it.
as you can see the first object has no segments except of the usual 6 sides, then i add segemnts and differnt levels of axis treshold but i still cant quite get out what it does , yeah i know something with limitations to specific axes but doesnt helpt me much specialy since i neeed a second try ot even craeat this pitcure cause blender was telling me "selected edges/faces required" althoug i selected edges.
Okay, what are you trying to achieve though? Just understand what the option does? If that is the only reason you are messing around with this option, I don't think you're ready to be using this tool yet. Edit: Or at least this option.
Tell me why you're using this tool and what you're trying to do with it and then maybe I'll attempt to explain it to you. Again.
Also another question, do you know what topology is? Without looking up the definition right now?