Capturing position
Accepted solution
When moving components the toolbar should activate the position contextual menu as show below:
In general checking those options means the contextual toolbar wont show up because you are telling Fusion to do it in advance. Pending positions are generally not good and it would be good to capture them.
Ryan Bales
Fusion 360 Product Support
@ryan.bales answered you question in one sentence but I did a screencast to demo his answer. If you move a body or component in your assembly, there is a pending change you need to acknowledge, Capture Position or Revert, before you continue. You want to avoid a lot of the Capture Position because it will load up your timeline. Most of the time if you get an excess of Capture Positions in your timeline you can delete them without issue. One of the great uses of this function is to test your assembly motion. You can drag components to see your constraints work and then Revert back to correct or continue work. I mentioned this at the end of the screencast.
John Hackney, Retired
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I hope you will use this feature sparingly because Joints are designed to hold components in their true position. Using Capture Position can really clutter up your model if you use to many of them. Try the Align tool instead, then apply an As Built Joint if you like the position.
John Hackney, Retired
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As I mentioned in the Screencast, your belt sketch had a lot of issues. Because the belt sketch "must" read the position of the tensioner pulley, as well as adjust its tangency to the fixed pulley, you must use the Project command with the Link option checked. You were missing all sorts of tangent sketch constraints also between the belt arcs around the pulleys. I hope you understand the whole idea of what is going on here or the exercise is useless. When you move the tensioner arm then capture position, you are repositioning the pulley geometry. Then when you select "both" the belt sketch and extrusion and move them past the Capture Position on the timeline, you are saying "My sketch will use the geometry of the pulleys where they are now, not before. If you sketch is viable, it will adjust. Just for fun, I added a Motion Link between the two fixed pulleys. Move your timeline marker to the full end of the timeline and then right click on Joint Rev1, under the main assembly, and choose "Animate Model". Model is attached with a different name. If this solves your issue, which it does, please mark the post as a Solution.
John Hackney, Retired
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I have no way of telling what you did from a picture, you should know that. If I sent you the same message, do you think you could tell anything from pictures? Always, Always attach the model when asking a question about a model with anyone, including me. So, if you would like me to take a look, you must attach your model. You can see it works just fine from my model. Did you download it and take a look? If not, do so and see the difference. I really love to help but you have to do your part and study the sketch, compare it to mine and you will see the issue and will learn a lot more than someone just telling you. By the way, you said you were paying for this course, where is the instructor to help you? I suggest you save your money and use the great tutorials Autodesk supplies for free.
John Hackney, Retired
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I looked at your sketch and in the video, I pointed out some of your issues. It had so many issues, I decided to start over and do it correctly. The video is so long, a Screencast would not be adequate, so I created an MP4 video which you can view by clicking on this link. It is located on my Dropbox site, you simple click on the Play arrow to view it. You do not need a password. One of the things you will notice, I created a new component in the Tensioner sub-assembly. This is a good practice since the belt truly is a component in itself. Second you will notice that I created my own sketch plane in a more logical position, on the face of the pulley, not somewhere off in the distance, it just makes more sense. You will notice that I stress that you constantly check your sketch for proper sketch constraints, in this case tangents which you seem to ignore. During the video, you will see I make a mistake or two with the sketch but I immediately drag the sketch entities to find my issue and correct it then. I end up with a fully constrained sketch that Extrudes easily into the body of the belt. I then process to do the proof that it will update when the tensioner arm is moved.
I recommend that you take your last submitted model and follow my video to practice taking care to follow each step. If is does not function correctly, either look for your mistake or start over until you get it. You have not been using Fusion 360 very long and you are tackling some pretty intense modeling tasks. When I started, all I modeled were blocks, cylinders, holes, etc. learning all the controls before I attempted an assembly of any type. My learning process took well over a year. You must start out simple and learn all the concepts of the application, then modeling in Fusion 360 will be both easy and rewarding. My model, from the video is attached, do your own, but consult it if you have to.
I would like to mention something about you saying you could not attach more than three items. This is true but you should not be attaching screen captures at all, they should be embedded in your post. That is what the indicated icon will do for you. In the screen capture below, it is not attached, it is embedded in my message. The attachment feature is for adding your model and other types of non-image files.
John Hackney, Retired
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Dear Sir,
Hope you are doing well. I've successfully completed the task as per your instructions. The only problem left is the belt's position. I failed to keep it at the center of the pulley. I've attached the screenshot for your reference. I'm finding it so difficult to pick up the inside edges of the pulleys. It took me hours just to take the projection of edges. I think my concept about projection is still obscure.
Anyway, I just wanted to inform you about my progress. I will try again to fix the belt's position.
I've attached the file as well.
Thanks & Regards,
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Looks good! You send me one a little over 7 hours ago and now another one which actually work correctly. As you continue with the next exercise do yourself a favor. Approach the problem using good Fusion 360 technique, not to just solve the exercise. Logical work features, good constrained sketches and a clean error free timeline. Good luck.
John Hackney, Retired
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