15T-M2 Let This Be A Lesson To Ya!

I asked my tribology professor about the chamfered edges today. The edges are chamfered to prevent cracking/notching them when handeled. They are also made to make the surface hardening more even, not as much stress concentration without them harsch edges. Love your videos, greetings from Sweden!

Pullstart on the mill got me big time! Tony, you are hilarious!

9:25 I've actually had to use this technique to start a mill. The fuses were to small so they blew immediately upon starting the rotation anything over 400 RPM. But by giving the spindle some speed before engaging the electric motor it was avoided. :D

I'm really loving how much of machining boils down to "This sucks, so I'm not going to do it." I've seen more shortcuts and exploits in my semester of machining classes than I have in a decade of playing video games.

That shot looking straight down the centerline of the blank while the gears were being cut was great.

Back in medieval times, when I was king of Texas and New Mexico (it's a long story), I commanded my armorer to make a torque multiplying gear drive for a trebuchet so I could win the Punkin Chunkin trophy. He made the gears from "the bones of my enemies" and they were just too brittle to hold up under the strain. I had him executed and enslaved his family. I often reflect back on those days with remorse. I really wanted to win the Punkin Chunkin trophy,

100% understood everything that was said. 0% chance I could reproduce it.

Tony, i always enjoy your videos and i learn something, in fact i learn lots of somethings. There is one gigantic problem with this arrangement. All of us viewers (im speaking for all of us, but some may disagree) need more. Im sorry to be the one to break the news BUT, You are going to have to quit your day job. I feel kinda bad about this because im sure your family has gotten used to eating regularly however i think your adorable son has marketable job skills. He needs to get a job. Now i know this may sound a little harsh but in many parts of the world he would have been working for a couple years already. He just needs to buy a lunch pail and head off to work. He has been selfish for far too long. You need to get into shop much much more often. Last i heard these videos you make do not make themselves (at least i don't think they do).Even the cat seems to do as it wishes. Rent out the cat on an hourly basis as either a mouse trap or a companion animal. If you stop hosing it down with the pest repellant it will more than likely survive all the previous sprayings and live to fight another day. I'm sure your lovely bride will feel bad as your son goes off to work with his new lunch pail and decide to pitch in for the greater good of mankind. I'm sure when the rest of the family is doing their part and are ALL(accept you) gainfully employed you will have at least 8 hours daily clot shop. If you include the interruptions because of lunch breaks and potty time, you may even have 9 or mors hours in the shop. I personally feel their employment is a small price to pay for our (your viewers) entertainment and enjoyment. They may not think so at first, but give it, say, three to five years. Then ask how they feel about the new arrangement. Deposit all the paychecks in an account that you alone control. We wouldnt want any money spent frivously, like designers clothes for the little lady or expensive underwear even. All that can be purchased at thrift stores for pennies on the dollar if you shop wisely. There is nothing wrong with second hand underwear, i personally would send it through the washing machine once or twice if it was for my wife. It doesnt have to look new as long as it's fairly clean. For the kids, buy the clothes a few sizes larger than they currently wear and make sure that what you buy is durable. They will grow into them as long as they get enough calories daily. Now you need to be careful with your wife, women can be really sneaky about clothing. She may say that she's put on a little weight and needs new clothes. Humbug, cut back on her caloric intake and in maybe 8-12 weeks she will fit right back into her coveralls. You have to remember that the sneakiness in females is genetic. It may seem that she does it intentionally, it is not her fault so don't punish her too severely. Maybe sending her to bed without dinher for a few weeks will train the genetics right out of her. It may take a litgle longer than a few weejs but she will come around and be thankful for it. I'll send along some more instructions if this doesn't work out 100 % the first go round. So in the mean time, please get out into the shop and make some more videos for us. We really need them. some folks think i'm nuts but in truth, Imonlyhalfnuts really. 😁 seriously, thank your family for giving us so much of your time. you sir are awesome and from what i can tell, so is your great family. Thanks for all that you do and i hope your wife finds this at least a little amusing. Have a great day Sir.

"Why?" is not a valid question when it comes to a home machine shop. Hilarious.

you chamfer gears because if you dont your teacher take off marks from your project...

"Why? Isnt a really valid question in the context of a home machine shop." -TOT Quote of the year? Quote of the year.

In all seriousness, I always considered myself pretty stupid. Math was something that always confused me. Yet machining is a dream of mine to start one day. Here recently I have been pretty down thinking I would never understand it. But I was you to know that you are the first that has managed to demonstrate something in a way that i understand it. I can't thank you enough. Gives me hope that one day I can too be a hobby machinist.

This Old Tony - one of the few youtubers you can click like before watching the video and know afterwards you were right!

They knock the edges off the teeth to reduce the tip load on the end of the tooth, which reduces the chance of chipping. Something about more support for the end of the tip... Or at least that was what I was told many years ago when I was working as a gearset fitter.

Lesson(s) learned....1. get a better rope to start the mill. 2. you can't do anything properly without a monogrammed space suit. 3. and most importantly to make proper videos you must be of the Mesmer Clan. Thanks TOTM!

I don't really know much about this, but here is my guess why gears should be chamfered: Both deburring and accurate chamfering is quite important (and each tooth should actually be chamfered on all sides) - Sharp load bearing corners can be work hardened during use, causing breakage. - Sharp corners gets hardened too much during hardening process - If gears are to be engaged and disengaged axially, chamfering geometry is important, oterhwise: - higher wear - Assembly of gears is faster and simpler with correct chamfering geometry - Injury during handling - Less damage during transport - Problems clamping gears in downstream manufacturing steps. (only clamp the disk, not the teeth) - More noise in fast running gear - Post hardening processing requires chamfering to improve process and tool reliablity

Could you go over speeds and feeds for an enemies bones? Asking for a friend.

I thought putting a bevel on the gears helps them mesh together in applications where they have to engage from the side. And to help with material rolling over. For the same reason putting a bevel on a hammer helps with mushrooming. But I'm no machinist. I'm not even a machine. I'm just a dude, playing a dude, disguised as another dude.

"Top Secret- Cogswell Cogs". Effin' hilarious! I love your references n puns.

The chamfer on the corners of the gears is because that is a weak area. Under load any shaft deflection can put very high loads on the corners of the teeth, and for hardened steel gears or cast iron the edges would simply break and you end up with bits of hard material passing through gears, so best to remove them from the start by putting a chamfer or radius on them. Not really a problem on aluminium or nylon gears. Finally something I learned during my apprenticeship turned out to be useful...