You had one job (and you did it wrong)

This video was sponsored by Factor.

So I'm finally doing it. After 10 months I'm finally addressing the spindle play in the free lathe... And I could hardly believe what I found. Any guesses? The thumbnail is a good hint.

And Craig wants you know that he's never opened this lathe. Or even used it for that matter haha

Also curious to hear what you guys think of this different format?

#inheritancemachining #machineshop #hobbymachinist

Thank you again to the Micrometer level Patreon members listed at the end of the video!

TIMESTAMPS

0:00 Git In There!
2:51 Hammer Time.
5:16 A little too clean...
8:27 Pampering
11:18 There are Growers
13:04 And there are Showers
15:06 Just gotta shake it right
16:52 Poetry
18:33 Woooing her

FAQ
Editing: Final Cut Pro X
Intro Song: Way Back Way Back When (Instrumental Version) - Gamma Skies

© 2024 Inheritance Machining, LLC. All Rights Reserved.

[dallenlofgreen]

Your wife is a treasure. Hearing her tease you relentlessly is just gold.

[Aaron_hindle]

I feel like the "manly grunt & Hmm" was definatly a wifey thing when edditing and im absolutely here for it. so funny to see it pop up

[wolfiemuse]

Your wife editing your videos is the funniest cutest shit. She gets to put in little jokes and silly clips of you that we wouldn't see otherwise haha

[BjornV]

17:13 The function of that tapered pin is to sheer off when cutting threads and end out of space. But the material need to be soft like brass or copper, and not steel.
At school we had them out of copper, and when things go wrong, there was no severe damage other then the broken copper pin. With 10 lathes in the machine room, we had enough spare copper pins available.

[Gianluca]

I like how when you get the spindle out, you're holding it out like someone showing off a fish they caught "You see that there, that's a big one"

[tristankoscheloriginal]

I would suggest replacing the tapered pin with one made from Aluminium. They are made to break when you crash the lathe so the leadscrew dosent break first. Where i work this happend before and its not fun!

[hannahworks]

20:07 “super duper sensitive, don’t want to hurt its feelings” 😂😂😂😂😂😂😂😂 👍🏻👍🏻👍🏻👍🏻👍🏻

[gbestwick]

Small note. After cleaning things in an ultrasonic like that, you need to flush with spotlessly clean water afterwards, give them a spin, and do it again. Ultrasonics loosen particulate, not flush it. So, for it to be spotless you need to flush it.

[ScottHebertArt]

21:15 I believe the goal it to keep more than less of the lathe out of the box of shame

[RonCovell]

Brandon - what a wonderful surprise that you didn't have to buy new bearings! That's the first time I've ever seen how headstock bearings are mounted, removed, and replaced. It makes a lot of sense, now - but I hope I never have to do that job on my machine!

[Twisted]

Imagine spending $1300 on precision bearings and installing them backwards...

[nalbertyna]

The consistent inconsistency of having parts "1" and "B" gets me every time... 😂

[dazaspc]

If you ever do the job again a few tips. I spent 30 years doing machine tool maintenance so I can help with a few ideas.
Bearings
For the spindle it would be using Super Precision bearings. Matched sets are a thing but only when used together never separated like your spindle. They will work but shouldn't be used in your application. They can often be quite a bit out and are sold as a matched pair due to a failed production process. They are just matched to be parallel.
If you look up the bearing number in a bearing book or I suppose these days online you will find the optimum volume of grease every type and configuration needs in a bearing manufacturers optimized fill. Try SKF for a great starting point. Grease volumes can change between bearing manufacturers but the difference is minimal.
If you ever have them completely clean and dry don't spin them unless you have at least added some grease. Put the grease into the gaps between rolling elements. I normally use a small cable tie to push it into the area before any spinning is done. Then when filled with the prescribed volume as per the bearing guide slowly spin them to distribute the grease. NBU-15 has been the defacto standard for spindles ever since the 80's but there are other types that you wont need your entire arm to buy now that will work just as well and last much longer. With smaller bearings like your lathe has they can benefit from a thicker grease. Worth asking about from your bearing supplier as when you give them the speed and heat you will be encountering they can go by chart for suitability. NBU-15 I have used in 1 meter diameter bearings running at 2000 rpm so it is quite light for smaller applications. It also doesn't like heat or water, steam especially and breaks down fast. it also has a limited life span as even the tins have a 2 year use by date as it starts to break down. If you have oil in your tube or tin of NBU-15 it's done.
Also a heads up with the tapered pin in the lead screw. It is in there as a shear pin so a hardened steel pin isn't really the best to use. Brass would be the best as it should shear without doing to much damage in a crash. Hollow as with a hole through the center is even better. However you were correct as the Spring or Roll pin you removed should never be used as they are hardened and will to more damage if ever broken. They are made for locking only.
Cheers

[Dogfather]

Couple of things: a) Remake your taper pin in a material with less shear strength. It is made to fail rather before you destroy something expensive. 2) I re-assert my comment from a past video about having your wife involved in the presentation. Definitely a good move.

[forestthefish]

Great video. The fact that the bearing was in backwards this whole time is frustrating, hilarious, and typical all at the same time. 😂

[niemanddings]

At least on many (smaller) machines the pin connecting the leadscrew/feedshaft is a sheer pin, typically made from brass, designed to fail in prevention of a more serious crash. I don't know if that's the case on hardinge lathes, but you might wanna check.

[batuhan]

20:53 “bcuz indicatior not facing sideways, bro” 😂

[slartibartfast]

12:18 I assume this was supposed to say 2024, or has this project been hidden for over a year?

[swampy]

I love how you have evolved the channel its fantastic to see the banter between you and your wife. Keep it up

[ErikPelyukhno]

Your relationship with your wife is absolutely lovely from all the interactions I’ve seen! ❤