KingRandomGuy

joined 1 year ago
[–] KingRandomGuy@lemmy.world 3 points 7 months ago

One of the big changes in my opinion is the addition of a "Smart Dimension" tool where the system interprets and previews the constraint that you want to apply instead of requiring you to pick the specific constraint ahead of time(almost identical to SOLIDWORKS), and the ability to add constraints such as length while drawing out shapes (like Autodesk Inventor, probably also Fusion but I haven't used that). It makes the sketcher workflow more like other CAD programs and requires a little less manual work with constraints.

[–] KingRandomGuy@lemmy.world 4 points 7 months ago* (last edited 7 months ago)

Hmm, that actually sounds like a bug. I haven't seen that on my end (once I set the locations of options in my toolbars they stay there, even after restarts). You may want to report that on their issue tracker. Sorry that you're having a rough experience!

[–] KingRandomGuy@lemmy.world 6 points 7 months ago

Last I tried it, there was no fix. Their latest update on the website says:

The work on the toponaming problem is an ongoing project, and we are very grateful to the FreeCAD community for contributing a lot to that effort. But it’s not complete yet, there will be much more to say when it’s largely done. So let’s focus on the other three.

So I take it they haven't implemented a fix. They previously said they were going to work with the FreeCAD team on mainlining a toponaming fix, using realthunder's work as a proof of concept, but said fix has not landed in mainline FreeCAD yet. I believe that's the major feature they're looking to implement for FreeCAD 1.0.

Definitely excited for Ondsel though! Hopefully that fix can be integrated quickly.

[–] KingRandomGuy@lemmy.world 17 points 7 months ago (3 children)

IMO the bigger problem with FreeCAD is the topological naming problem. It's very easy to get frustrated because your model broke due to a change you made in an earlier feature.

The UI isn't amazing though, and that unfortunately happens quite a bit with open source software. Hopefully it'll go the way of Blender and KiCAD with an eventual major release that overhauls the UI.

[–] KingRandomGuy@lemmy.world 11 points 7 months ago (3 children)

Ondel has a nicer user interface, but I personally use and recommend realthunder's LinkStable branch of FreeCAD. Mainline FreeCAD (and by extension, Ondsel) suffer from the topological naming problem, which can be especially jarring to users coming from proprietary CAD software. realthunder put a lot of work into a solution that handles the problem pretty well, so I'm using his fork until toponaming gets mainlined.

[–] KingRandomGuy@lemmy.world 13 points 8 months ago

As of right now VLC also doesn't properly support Wayland, but MPV does. It's a great piece of software!

Agree on the sentiment about VLC though, having an open source project demonstrate what is possible and stand the test of time definitely paves the way for future work and improvements.

[–] KingRandomGuy@lemmy.world 1 points 8 months ago

I haven't used all of the assembly workbenches but I've found Assembly3 to be pretty robust to design changes if you use realthunder's Link Stable fork of FreeCAD. I wouldn't be surprised if all of the assembly workbenches would benefit from toponaming fixes, though I don't know how they all work.

[–] KingRandomGuy@lemmy.world 5 points 8 months ago (2 children)

The topological naming problem is handled quite well by realthunder's FreeCAD Link Branch fork, and his Assembly3 workbench is an acceptable, albeit imperfect method of making assemblies when combined with his fork. Assembly3 can run on upstream FreeCAD but I found it to work way less consistently due to issues like the topological naming problem breaking links in the assemblies.

Nonetheless the added features by Ondsel look interesting. I'd consider switching once upstream FreeCAD implements a solution to the topological naming problem, but like you mentioned, toponaming is such a huge leap in usefulness that I'm hesitant to switch to another FreeCAD version that doesn't handle it well.

[–] KingRandomGuy@lemmy.world 2 points 8 months ago (1 children)

Not sure what's going on but if the printer was flashed with Klipper, it won't show anything on the screen until it is connected to a computer running klipper's host software.

[–] KingRandomGuy@lemmy.world 1 points 8 months ago* (last edited 8 months ago)

That sounds about right. You can technically achieve full torque at 0 RPM, but the current required for that might be very high (and may not be practical for the small size, power limits, and cost of a 3D printer). I know this is a problem in Asian import mini-lathes - if you run the spindle too slow you won't get much torque out because the driver can't supply enough current.

[–] KingRandomGuy@lemmy.world 1 points 8 months ago

I think it would be a better idea to use linear encoders if you were going to add encoders to the shaft, as that way you could directly readout the position of the tool along an axis without issues like backlash that would mess up your calculated position. This is what I've seen on (both manual and CNC) mills and lathes.

[–] KingRandomGuy@lemmy.world 3 points 8 months ago* (last edited 8 months ago) (2 children)

BLDC and AC servos maintain full torque at stop too, and have about 2-3× the torque of a stepper of similar size.

Huh, this is true about BLDCs as well? I remember seeing in a video that BLDCs tend to have very poor torque output when stopped and especially when at low speeds (due to very low efficiency requiring too high currents for drivers to supply), whereas AC motors have a pretty much flat torque curve until they get fairly fast. I'd be interested to know if this is true.

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