u/Strostkovy

I have a model, and I changed some early sketch dimensions and due to toponaming issues, a later sketch lost its subshape binder. Because that sketch has no attachment, I can't get the model to recompute at all. Set tip does nothing, suppressing features does nothing, and I can't set a new temporary attachment for the sketch because the model disappears in the attachment editor blanks out the model because it's an old cache.

In any other program I could just roll back the timeline and fix the issue. In FreeCAD I can delete everything from the bottom up until I get to the problem sketch and fix it, but then I lose a lot of work.

How can I get the model to recompute up to the error so I can fix this extremely minor loss of reference geometry?

I modelled a part in FreeCAD 1.1.1 and assigned a material but I don't see how to check the mass. I've gotten at least six different answers from AI / search results / videos and none of them work.

I'm so happy to get rid of the laggy online parts of fusion/onshape and cancelling my fusion subscription if it keeps going well. I use parametric modelling to design die castings here and there for some products. Might try doing sheet metal in it at some point but I'm not sure I feel the need to yet.

I had some prints with really long file names and then rev 1, 2, 3, 4 and so on, and then followed by the default material type and print time that Snapmaker Orca adds. It seems like having so many similarly named files was causing random code from other models to be picked up instead of the correct code. So one part of my models after revision 2 was always printing wrong and it didn't match my slicer preview.

A bit of a long shot but I'm trying to automate testing of electronic products using a basic PC and one of those 8 or 16 port RS485 cards, and I'm hoping someone else has dealt with it and knows what brands work well. I would like the physical ports to always keep the same COM number (or linux equivelant. I can use windows if I have to, but I'd like to buy minimal RAM and CPU and all that).

I'll have to reconfigure meters and power supplies and custom test fixtures a bit, and just want to run a python script for the actual tests.

A 200 meter diameter disk spinning at 400 RPM could add 4km/s of velocity, which could yeet from orbit to escape velocity.

Assuming it was appropriately balanced to avoid tidal forces, could a bunch of solar panels on this power magnetorquers to get to a high enough velocity with enough patience? I envision a satellite that a bunch of spacecraft dock to, it spins up over the course of two months or so, yeets, and then slows to a stop for the next docking and repeats. Good for sending supplies to planets.

Due to low angular velocities and large radii (or maybe small and fast is the move, I don't know) the solar panels could be stationary and aimed while delivering power through a slipring.