Put an inner thread on both ends of a channel without making it "Full length"

[ttodorov]

Hello,

I am having a problem with putting a thread - not a full length one - on both ends of a channel. At first I tried to repeat the operation separately on each end, but that did not work. Then I decided to try mirroring the thread using a midplane, and that worked only if I made the thread "Modeled" before mirroring. Unfortunately, this makes the model very heavy, if I want to put in all threads that I want to have. I have captured my Fusion 360 screen in a 4 min long screencast, if anybody is interested how I went about the whole thing: https://screencast.autodesk.com/main/details/086ae5d8-6178-4820-8d01-65bde276f33c

I would appreciate, if anyone could tell me what I am doing wrong, and if there is another - better - way to make this work.

Thanks!

[kellings]

You were close. when you do the mirror, choose the far right option to mirror just the feature in the Pattern Type field. It is the one that is active in this screen shot. 

[ttodorov]

Hi and thanks for answering!

I tried that and it worked, but again only if I "model" the thread. Unless I click to activate that option in the feature dialog, I either get an error message (with mirror compute option set to "optimized"), or nothing at all (any of the other 2).

[kellings]

Yeah, I just tried a simple example and this seems to be broken. After you complete your mirror, does the mirror feature appear in your history timeline? Mine did, but nothing was visible. I am guessing that Fusion is doing the mirror, the results just aren't displaying properly. 

[ttodorov]

Yes, doing the mirror op with these settings makes the feature appear in the timeline, but not on the other end of the hole.

Anyway, I don't know why it didn't work the first couple of times I tried it, but I was able to use the command to creat the threads in the way I intended to in the first place. What I did was to place the threads in all holes on the one side and finish the operation - note, that I did not model the thread so it is just hinted at (sorry, don't know the proper name for that kind of rendering). Then I just rotated the part and created the threads on the other side of the same holes in a second operation. It might have been that something in my model was not right the first time I tried and it failed. I had the app crash on me, and when I restarted it and started the model from scratch, it all worked just fine...

Thanks for your help, I appreciate you taking the time to do it.