hey everyone, I am very new to 3d modeling, I have spent all day trying to figure out how to make a simple flange. I managed to figure out how to do that and extrude it to the thickness I need and change the material typed to what I will be using. now the tricky part ( at least for me that is. ) what I need is there to be runners that come off of the flange that are the same shape as the holes in the flange but after about an inch or two transition to just circular runners where it will be attached to another flange. how can I go about this? attached is a picture of the flange I am working with.
design help?
@supraman2jz wrote:I need is there to be runners that come off of the flange that are the same shape as the holes in the flange but after about an inch or two transition to just circular runners where it will be attached to another flange.
This would be done with the Loft command, but this is a very advanced technique for you current level of experience.
I would have started out very differently.
I would have placed the canvas image with symmetry about the Origin.
I would have broken this up into two, probably 3 sketches.
I would make as much use as possible of existing symmetry - sketching only one half of that which is symmetrical.
I would have fully defined my sketches (black - not blue) such that any edits are easy to make.
I would not repeat the circle dimensions (use Equal (=) constraints instead.
Actually, I would have first gone through the Learning Panel
I know that it is tempting to jump right into your project, but you have effectively jumped out of your boat in the middle of the Pacific before first learning to swim.
In addition to the Learning tools, there are numerous YouTube resources (some better than others).
To get a handle on sketching - you might go through this series...
I am confused by your term "runners"? Is this a transition between the port shape and a round port similar to the attached screen capture? If not, please explain a little better what you need.
John Hackney, Retired
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Yep that is exactly what I am looking to do. it just needs to be the same shape as the ports for about an inch or so because that us where the injectors will go. after that it will go circular like in your picture. bellow is kinda what I am trying to recreate if that helps any?
As a new user of Fusion 360 your are biting off a very tough design exercise. As mentioned before, and I mentioned it again in the video, you have not learned yet how to sketch effectively and now you are moving into a complex modeling task. I do not wish to discourage you but you need to start with the basics or you will become frustrated and give up completely. When I started CAD, I drew models of rectangular, cylindrical and polygon solids for weeks learning all the basics of sketching and modeling. After that it makes sense and you can add new material as you need and you will understand the process and "enjoy" the learning. You may be thinking, I am a slow learner, well I do not feel that way as it worked for me. I have been modeling in various CAD applications for 20+ years as a career as well as a hobby and I never hesitate to stop and sketch something simple to learn a new process or technique.
With all of this being said, I create a riser on the end port. I made up some dimensions which you can change easily as the model is fully parametric. Good luck. The Screencast is long as this is a complex process. Model is attached for what I did.
John Hackney, Retired
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I forgot to include the link to a Blog Article and Video you will need to get your Loft rails correctly positioned. When you see the error message that the Loft rail does not touch all profiles, you need to read and watch this article and video.
John Hackney, Retired
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Model sketches should be fully constrained. Constrains come in two forms, sketch constraints such as vertical, perpendicular, tangent, to mention a few and sketch dimensions. Both of these are used to define sketch size and position to the extend the model sketch cannot move in relation to the model origin.
A fully constrained sketch keeps sketches for moving leading to model inaccuracies, failed features and seriously impeding Fusion 360 performance. Simply put it is a requirement to good modeling. Fusion 360 helps you in two ways know when sketches are fully constrained, the sketch changes color and when a sketch is fully constrained it places a red padlock on the sketch in the browser.
John Hackney, Retired
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Loft is finiky, 2 Lofts are even worse. Hollow tubes are done with 2 lofts, one solid and one as a cut. I have gone another way, reducing the sketch workload.
Your sketch 1 needs work, the port outline has no tangent constraints, and a small short line that will cause the problems. (edited)
Your wall splines were not parallel, handles not vertical.
You may like to do the next 2, and then mirror the bodies before combining them to one body, if that is your design intent.
Might help....
Your Fit Point Spline, on both the inside and outside, starting at the manifold plate on both sides have a loop in them instead of going straight to the next intersection point in the next sketch. This caused the loft to intersect itself and fail. I have attached a screen capture showing one of these loops.
@davebYYPCU method of doing this operation correctly states that is takes less sketching but uses Surfaces which you probably know nothing about. You have to remember that there is a statement about CAD work that is always present "There are many ways to model a feature, no wrong way if you get the results you want, just one way is more efficient than another."
John Hackney, Retired
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Accepted solution
The sketch does not have one constrained entity in it! You have all those curve radii to dimension, adding tangents and relating to the origin. Note the two red arrows, one dimension and one horizontal sketch constraint relating the end that changed colors to the origin. Note all the tangent constraints and dimensions I added to that end also to get it to change color. You have a lot of duplicate dimensions to place, I think so you can use an equal constraint or simple copy the duplicate dimension. You are a good tracer, that is all I can say.
John Hackney, Retired
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