Brep to T-Spline problem
@chrisplyler wrote:
... But what if I want to model a fork for a change, huh? Where are all the fork tutorials? ...
Exactly! Using a Knife blade as a vehicle to explain a concept or two is a fine thing. But the vast majority of Fusion 360 tutorials don't do this. They show actions but often fail to explain the rationale behind them.
However, I have subscriptions to a few Fusion 360 channels and the day I made this post I had just received a youtube notification of a new tutorial. I usually like the CAM/CNC oriented tutorials on that channel but that one caught me off guard.
Honestly, If you don't have content to make a useful tutorial on, then don't post one.
@mtriffon wrote:
The origin thing is still murky to me so I am not sure what you mean.. I will try to find a tutorial on it.
Origins are ... well ... origins, like he origins of life. in CAD there role is equal important.
They are the first thing I look at ehern looking as other user's designs. Often they indicate right away what's wrong.
For example in a mechanical design if there are origins that are not sensibly aligned with the geometry of a component often indicate that the user moved a body instead of a component.
I any design that is mostly symmetric as in your case I'd expect to see all component origins aligned in one axis.
I am also noticing that there are two of these fan units int he design, both oriented different. One aligns with the mounting holes of the radar fan, the other does not. Why ?
How can you propose to be almost done with the design if a solid design base line is not established ?
No sarcasm, but definitely exasperation. However, that exasperation is not necessarily rooted just in this thread. I am sorry if I sound a little frustrated.
Like so many users you seem to be stumbling around in the area of CAD possibly under the assumption that this is easy ands can be learned quickly. But CAD is a broad area and used as a tool for a number of deferent disciplines such as industrial design and mechanical design that require their own knowledge aside from CAD, but often closely connected to it.
As such trying to gain that knowledge by watching Fusion 360 youtube tutorials of which 90% have only hobby level is only going to get you this far.
I am not even sure it makes much sense to pay money for "higher end tutorials" on sites as Pluralsight or Udemy, because I've seen at least one Fusion 360 tutorial there that I personally would remove from public access.
To proceed successfully in this project you need to establish a baseline and figure out what components need to be oriented precisely where.
Once you have that baseline you can start designing this fan duct to fit that geometry. I can proceed making a tutorial and actually show how to get these components aligned and "locked down". That should help pointing you into the right direction.
You did ask a direct question. True!
But the answer to that is not that simple. There are many ways to skin this cat, T-Splines are just one and might not even be the best, or quickest way to do so.
Generally you might want to keep that part of the geometry that interfaces with the Radial fan assuming ( sorry 😉 ) that this is currently working.
You can simply trim those part off that don't fit (Modify->split body) or delete individual surfaces in the patch environment.
Then you can either use T-Splines, or lofts either in the Model, or Patch environment.
I would go for lofts with a centerline guide rail.
Before doing all that in your current design with the timeline disabled use the align function and center all the parts on the top level origin and each individual component using the align function. That should establish somewhat of a baseline.
Then you might enable the timeline, so further design steps are recorded.
That's a lot of information but the point is, it's a path!!!!!!
I can look up each one of those processes and advance in an incremental fashion now that I know where to look, so thank you for that. It is interesting to note that I actually did the first step and trimmed the pieces and kept the top part as you can see below.
