Guys, I need some advice about Fusion… I thought I’d ask here first, rather than on Reddit (I don’t have an account there)… so maybe someone here can help me and save me the “trouble” of registering there… thanks in advance.
I have a sketch, made a Project of the existing body, and it gave me two points, between which I created a new point, exactly in the middle - no problem, easy task - Midpoint.
But now, instead of one point in the middle, I need to create two points so that the distance between the projected points is divided exactly into thirds.
The problem is that I don’t know the distance - it changes parametrically, so I can’t calculate inn advance, somewhere on the side, that 1/3 = xy mm… The only thing I can “grab onto” is precisely and only that projection… I know the boundary points, but I just now I have no idea how to add the two new ones so that it works out in thirds…
I apologize if the description is a little confusing, but the picture will hopefully explain it better -green is what I have now (1 point = midpoint), red is what I need (2 points).
… this confirms the “rule” that when you don’t know something and ask about it, it will occur to you after a while. So I apologize for bothering you unnecessarily, but it seems that it (once again) served its purpose…
OK, it was pretty easy … I’m almost ashamed that I didn’t think of it right away and bother you here
I placed the two “searched” points “by eye” on the line connecting the two projected points. Then I drew three lines between points 1(P)- 2; 2-3; 3-4(P) and set the Equal constraint so that the length of the three lines should be the same. Honestly, I thought Fusion would send me to *** (Unable to solve or something similar), but to my pleasant surprise, it solved it without any fuss
So I have three lines of equal length and, most importantly, I have the two points I was looking for. See the image - ignore the “dimensions”; they are set to “Driven” and are only there to check they are really the same during test - I tried changing the projection points to see if it really works in general, and it seems that it does.
OP has solved the problem on their own. But to give some advice to people who may have questions on Fusion, or practically any subjects, one can consider use of search engine as the first step to find the answer. If after searching, there is still questions or confusion, then ask on this forum. Note: I am aware of the criticisim one may face when telling users to do the search, but it is an effective first step, particularly now that AI has been built into search engines.
For example, one can type in normal conversational English into Google “Fusion how to set two points between two endpoints to divide the entire length equally into 3 sections. The distance between the two endpoints can vary”
One would get an AI overview that includes 3 methods to solve the problem.
Method 1: Using Construction Lines and Equal Constraints (Best Method)
Open your Sketch and ensure you have your main line drawn between two endpoints.
Create Construction Lines:
Using the Line tool (L), draw two lines starting from the top endpoint, roughly dividing the length, and ending them on the main line.
Draw another line to finish the 3rd segment. You will have 3 line segments along the original path.
Toggle Construction: Select all three line segments, right-click, and choose Normal/Construction (or press X on your keyboard) so they are dashed lines and do not interfere with extrusion.
Apply Equal Constraints:
Go to the Sketch Palette and select the Equal constraint (looks like an equal sign).
Click the first segment, then the second.
Click the second segment, then the third.
All three segments will now change to equal lengths.
Place Points (Optional): If you specifically need points, use the Point tool to place points at the intersections of your construction lines.
Method 2: Rectangular Pattern (Fastest Method)
Draw a Point: Place a point on one end of your line.
Activate Pattern: Go to Sketch > Rectangular Pattern.
Select Geometry: Select the point you just created.
Configure Pattern:
Distance Type: Change from ‘Spacing’ to ‘Extent’.
Quantity: Set to 4 (This creates the two end points plus two internal points).
Direction: Drag the arrow to the other end of the line.
Finalize: Press OK. The points are now equally distributed.
Method 3: Parameterized Dimension (Most Flexible)
Measure Total: Dimension your main line, and take note of the parameter name (e.g., d1).
Place Points: Place two points on the line.
Define Locations:
Dimension the distance from the start point to the first new point.
In the dimension box, type: d1 / 3.
Dimension the distance from the first new point to the second new point.
Type: d1 / 3 again.
Now, if you change the main line length, the two internal points will update to maintain equal thirds.
OK, it was pretty easy … I’m almost ashamed that I didn’t think of it right away and bother you here 
