Just began using Fusion 360. Was doing the in-place tutorial where one adds a sliding switch to the lamp. At a point in the tutorial, one grounds the neck of the lamp and then places an as-built:slider joint between the grounded neck and the switch. When instructed to choose the components for the as-built slider, if I choose the neck first and then the switch, the neck moves along the z-axis. If I reverse the order of selection, the switch moves.
There is no indication in the as-built:slider help that the order of choice will affect which component moves. Further, I would have thought that 'Ground' would mean that the neck component is fixed in space. Although I've confirmed this behavior on both home and work machines, can someone else please confirm.
Any clarification on order of choice for as-built:slider or the meaning of 'Ground ' much appreciated. Thanks.
Fred
Welcome to the Fusion 360 community and thank you for posting your question.
The Ground command should "lock down" a component so that it doesn't move. All degrees of freedom will be eliminated, and the components will be "stuck" in the position that it is grounded in. A helpful thing to note is that if a component is grounded, it will be "grayed out" during the first selection when creating a assembly Joint. The reason for this is the first selection will always move to the second selection when creating a Joint. Since a grounded component cannot move, during the first selection in the Joint command all ground components will become transparent and unselectable. Does this answer your question? Please let me know if you have any follow up questions.
Thanks,
Hi Nate,
Thanks for the response. After re-reading it I realized the operative word was 'should' lock the component down - it doesn't.
I went back and reran the in place exercise (and also had my associate here in the R&D shop try it on his seat of Fusion). FYI...if the grounding of a component is supposed to grey it out and make it unselectable, it doesn't, at least not for the As built slider joint.
Not a biggie; will just choose components in correct order in future - but you may want to look into why Ground isn't totally locking down that to which it is applied.
If it's pertinent; am running Win7 Pro SP1/Nvidia Quadro 4000/Dell T3500. Thanks again.
Fred
Fred,
Thanks for the upate. I'm going to create support request and reach out to you via e-mail, directly.
Thanks,
Nathan
Hello,
Maybe I can lend some insight here. I recently brought this up to our development team as well and this is the reasoning behind the way things are working.
"With the as-built joint, we don't move the first selection to the second during the joint creation. When the user presses OK, there should be no movement. That is the nature of the as-built joint. For this reason, we allow the grounded component to be selected first."
The animation that is shown when you select the two components and haven't commited the command is a simple Animate Joint which ignores the constraints of the assembly which includes the ground.
I think the confusion that is happening here is the fact that when we use the animate joint the grounded component comes across as being movable, when in fact if you OK the creation of the as-built joint it will honor the grounded component upon creation. This is something we are looking into to reduce confusion in this area.
The Joint command, not as-built joint, operates the way that Nathan is describing above, it won't allow you to select a grounded component first because the joint command moves the first component to the second component.
Please let me know if you have additional questions and I would be more than willing to help answer them.
Cheers,