Redefine sketch plane error: Compute failed - 1 Pattern Source Lost

[skorjanc.aljosa]

Hello!

I am following my 3rd Fusion 360 tutorial: link to tutorial. Exactly on 13:06 inside the tutorial, the person speaks about redefining a sketch plane, which in my instance results in an error.

Particularly, I have two plates - I have already constructed a top plate, with a rounded bearing socket on the bottom of the top plate. Then, I copied the top plate and renamed the new object (using "Paste new")  to Bottom-plate. Now, the bearing socket on the bottom plate is facing downwards, whereas I want it to face upwards. The person in the video achieves this through a "Redefine sketch plane" function, whereas if I try to replicate his steps, I get a warning, saying 1 Pattern Source Lost - The model is using cached geometry to solve. Please reselect reference geometry for failed features in the timeline.

I am interesting what I can do to resolve this issue. I am also attaching a video of me replicating this error, and a file to the project in question. Do note, that my recording software was sadly unable to record the Fusion 360's error popups, but the two errors were:

• Extrude3 -> Compute Failed
• C-Pattern1 -> 1 Pattern Source Lost -> The model is using cached geometry to solve. Please reselect reference geometry for failed features in the timeline.

Thank you for the time taken in advance.

[Oguzhan_Sezer · Accepted solution]

Hi,

You only need to change the direction of Extrude3 in the process you do. It gives an error because it cannot find an object to cut in this direction. Right click on Extrude3 and change it to +7 instead of -7 with edit feature. The pattern also cannot be calculated because it loses its reference. It should have changed direction automatically. A change may have been made here with the updates.

[skorjanc.aljosa]

Thank you, manually reverting the cut from -7 to +7 works. But yes, this should've been done automatically I believe. Can I expect a fix in a future release or how can I flag this, so the developers see this bug?

[Oguzhan_Sezer]

You're welcome. Of course you can contact here.

[g-andresen · Accepted solution]

Hi,

1. from my point of view it is not an error.
2. i recommend one of the procedures shown in the screencast.
In the 2nd procedure, I moved and rotated the already created component "BottomPlate", which simplifies the subsequent creation of a joint. If you have some practice in creating joints, this is not necessary.

günther

[skorjanc.aljosa]

Thank you very much @g-andresen! I have not yet seen your way of mirroring, it is definitely extremely useful!