Cool, did you find any oddball gears? I'm kinda surprised I can't think of many gears in my house except the ones I printed myself. Maybe I should take apart the gearhub on a bicycle?

@@antalz All the gears were pretty simple, but the size varied a lot. I have a Mechanix set from when I was 8 or something, that has a variety of gears in it. Other than that I took apart a wall clock, which had tiny gears in it. Yeah! I would love to see the working of the cycle gears, if you could do that. The gear change mechanism has always fascinated me! PS - I'm in college first year rn, studying mechanical engineering. The core mech. topics haven't started yet, but I'm really enjoying your video series, and I really look forward to learning all these things in detail!

Cool! By heat treating do you mean annealing PLA, stress-relieving PC, or something else?

@@antalz no, I used the PLA 3D printed model to check fit, it fitted perfectly so then I wire cut a gear from case hardening steel using the same G code generated for the PLA prototype

@@crozwayne Ow that's really cool! No problems with dimensional changes after hardening?

MY pleasure, thanks for watching

Thanks, I have a lot more gear content on the channel if you want to learn more. I should have left some space for an endscreen on this video

The proficiency comes mostly from practice. I'm completely self-taught in Fusion360, but you can use courses for the basics too. However to pick up speed you need experience, and to get that the best thing really is to just design and build stuff. You need to build stuff to I believe, because designing things that work only in CAD is a big trap.

3D scanner is a good idea, but it might actually be harder to find the right numbers for the gear generator to replicate the correct gear.

Thanks for the thorough QC of the video

Unexpected comment, why Blender? Because of OT Vinta?

​@@antalz I didn't have OT Vinta in mind, I've seen their videos too. But my reasoning was because Blender is, imo, "closer to the vertices", or at least gives you more control for individual ones, than Fusion 360. In blender you can just press tab and you're in edit mode for the vertices. I guess it makes sense to use Fusion 360 for this since a gear is more or less a 2D-shape + an extrusion.

@@harrysvensson2610 That's an interesting choice, I thought getting dimensional accuracy in Blender was tough? Do you start from a 3D scan?

​@@antalz The dimensional accuracy is not a problem to me, just set what units you are working in, which is mm in my case, and I get a 32 bit float. 32 bit float => 6 digits representation (6.9 if you want to be specific, but we round down), so I can represent the number 25.0001 which is 25 mm and 100 nano meters. I'm not aware of a 3D-printer that has nano meter resolution & precision, nor do I really need it, so I'm fine. Hmm a few times I've gone with just a 2D scan with your typical paper scanner, the thing that gives a crisp 600 DPI image. Then there's no projection error and this is fine for 3D objects that are mostly 2D (such as knife handles, keys, gears). For geometry that is more 3D like a small DC motor that are in toys I just use a digital caliper. It's very similar to making a sketch and extruding, but if you want to add holes in the motor that come at an angle then I can easily set up a boolean operation in blender and I'm done. With fusion 360 it feels more like a puzzle, like I don't have enough control. Or maybe that's just an excuse for disliking change. But yeah, I did make a 3D-scan of a house once, the kind made of wooden planks that is in a playground with sand that kids play in.It's very easy to have a point cloud and as a human identify that certain points is a plane, these points is an edge, etc, and then put your house together. There was another pointcloud scan that I converted to a model as well that was a milling cutter, literally the entire machine. It's about 50 years old. That one had very curvy surfaces all around like a car. Yeah I don't even know where I would begin to convert that to a model with fusion 360. Or any CAD software for that matter. Blender is love Blender is life

Reverse engineering threads in general is something that’s still magic to me. Would love such tutorial on that.

I haven't done that myself. I think you should measure the diameter of the bottle, and the inside diameter of the cup, and if possible cut open one of the caps and measure the pitch of the thread. Maybe you can also put that on a scanner and find the shape of the threads. You can then use the modeling method I show in my worm gear video, but then in the second sketch use whatever the profile of the thread is.