Congratulations! You made a broken gear whole again. Now let's see if it works without disintegrating when you reinstall that gear to whatever machine it came from.

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The end where you show off the finished repair would have been SIGNIFICANTLY more impressive if you had shown us the gear being put back into operation again with the other gears it was previously working with.

For those that aren't watching the whole video, the repair is NOT made of wax, he uses was to cast the negative, then uses that to cast the repair in epoxy.

Interesting! I took a similar approach on my 4WD actuator. 2 sprockets sheared off and instead of buying even a used actuator for $300 i just started off as you did, but put 2 wire anchors in each sprocket before using CA Glue to fill the entire gap, then used a file to reshape the section by hand. It’s been working for the last 5 years without problems

Looks good, we saw enough angles. Great repair, didn't find out if it was strong enough!

Nice process. A friend did something similar as few years ago to be able to make sacrificial "high/low speed" double gears for his mini milling machine. He rebuilt a gear pretty much as you did, made a mold of that gear, then used the mold to cast the centre part of that to make a 3 piece mold in aluminium. Whenever he kills a sacrificial gear now, he packs the mold with glass fibre filler, clamps it all together hard in his vice so that the filler get's pushed right to the tips of all the teeth, then next day he has a new gear that just needs the centre hole drilling/reaming through, and 3 faces skimming on his lathe.

One of the best things about youtube, is that if you think an idea is funny or worth trying out, there'll always be someone out there somewhere that you can share it with & that'll get what you're trying to do

Very good demonstration & video overall. Especially if the broken part is irreplaceable/difficult to find or too costly to replace etc.

You should have added more material in back of the gear teeth as the patch will be pulling on what little material was remaining. Thus the theeth patch can tear off easily as the previous damage shows a lot of force is applied while in use.

I would suggest adding some kind of fibre strands in the mix will make it stronger.

That was a very clever repair. I wouldn’t have ever thought of that. Pretty cool to see it done👍🙂

Your process and the result is excellent. If I could offer a suggestion, it would be that you should have added much more material on the inside to provide more of an anchor for the new teeth. The thin section at the root of the new teeth is likely not going to last depending on how much torque is being transmitted through the gear.

Wow!! I thought you would use 3d printing...but this makes more sense and is a great repair work...kudos👏

Forget the negative comments, I'm a dental technician, in my opinion you did the best ,you're a genius, thanks for the info.

WOOOOO!!! That was smooth. Brilliant idea and it worked perfectly. Thank you for sharing. 👍👍👍

Cool, but you never showed it actually working.

Nicely done! Great repair 👍🏼🤩❤️

Excellent ! The vid gives a great example for other repairs in plastic I can utilise.Thank you for uploading.

This is by far the most basic and most clever repair video i have ever seen. Liked and subscribed!