YEP. if you are still going to make plastic gears just use 3d printer....

I agree that 3d printing produces excellent gears. I'd like to point out, though, that this video is showing basic construction techniques and while the final product doesn't produce quality gears I don't think it would take much to find-tune the machine code to get better results. I think time is a big consideration when making online content like this. When you're trying to publish content on a regular basis you can't always get perfection before deadline.

I don't know what you're talking about man. I come here for the JLCPCB ads.

His video description also says, "Automatic thread cutting machine" - something is NQR here haha.

fail teeth covered with his fingers at the end video. this is magic video

I think he cuts the circles from sheet plastic. He makes some of the supports in other videos the same way. I think with a proper cutting wheel and some fine tuning of the machine code this could be a viable project but I think I'll stick to 3d printing my gears. 🤣

I think some projects exist because the fundamental principles are awesome, regardless of whether it offers the best productive solution.

He copied another guys video. The other guy was some poor guy who made it out of nothing and deserves the credit. This guy just spent 5 mins on Amazon.

@@luminousfractal420 no idea is original.

Silly people, use metal gears

Nice explanation, I could understand what you meant without a sketch!

^^^ this

Seeing as he made his own cutter blade the profile is not going to be perfect. Nor did the stepper do a good job on turning the plastic disc, or it's diameter was wrong for the amount of teeth.

Thank you!

@@FlexDRG It's not just "imperfect" it's literally the inverse of the shape it needs to be. He ground the cutter to look like a gear tooth profile instead of the space between the teeth. The "gears" this cutter produces are completely useless.

How is this excellent? It produces gears but without a proper gear profile, probably without proper spacing so by the time you get round to the end of the gear it doesn’t line up, notice how we don’t see it cut a full gear or see a cut gear on its own, their fingers are covering part of it. They showed they have a 3D printer so it is much more precise to print a gear rather than use this method which has a fixed tooth size, a janky cutter, doesn’t cut a proper gear profile and may not even line up right. We also don’t know if you cut two of these gears if you could even mesh them together, I would guess you probably can’t, or if you do manage it, then they won’t turn well. It is just another pointless project made to farm views.

Why does this person heart every comment, including the negative ones, they just be insane.

Those useless IOT clocks and pointless flashy light things are conceptual demonstrations designed to inspire imagination and foresight in those who are able to think for themselves rather than just copy other people.

Negative comments helps with video views.

Yeah, I guess this is the most practical usage of such gears, because with this shape you can't use them as gears. ;-)

The error is forgetting that the desired outcome is based on a gear ratio... not the major diameter.

Agreed. A decent first effort, but the maker should now look into the proper shape for gear teeth. One option is to make your cutter the proper shape, and have a different cutter for each range of gear. The other option is to use a cutter with a "rack" profile and index it laterally along with the gear blank rotation. The second way lets you cut any tooth count with a single cutter.

​@@mattw7949

Or micro steps

A stepper does a full rotation in a whole number of steps. He most likely manually advances to the next step, so there are no "steps per rotation" to adjust.

Yeah, and for propper usage the shape of the cutting wheel is important, otherwise two gears will not fit together. I would realy like so see two of such gears working together.

I use a NEMA23 with 3:1 reduction on my gear cutter. I’ve cut metal gears with out any holding issues.

@@johnwalker1471 Hey John have you built this kit? If so would you have a link for it please? or do you have a link for something else? Cheers.

A very fine pitch lead screw driven through a reduction gear drive might get around that limited division. Thing is... start with how many teeth you want... what ratio is desired. Yeah... tooth profile is rubbish.

Buy a real gear hobbing machine.... not try DIY large scale machines. Minimum would be a dividing table and a milling machine. The DIY jobbie will likely kill an operator.... and produce inferior results.

LOL this bloke is an Indian... they never give anything...LOL

Exactly. Was looking for this comment

its simply showing the principal as a project. form the cutter properly and possibly add an actuator to cut across entire blank and a useable "spec'd gear" could easily be achieved.

LOL very broad brush your using there... just as an fyi one of many definitions of a gear is "a toothed wheel that works with others to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle) and the speed of the driven parts (the wheels)" They don't have to be that specific.

He doesn't even post them .