Let's Make Machinist Jacks

I learned what 12L14 steel is today. Thanks!

Love your video s but still can’t get my head around imperial sizes😮

Hey again. I love watching how u guys get the threads corret. So how do u get it where there no movement withing the thread fittings. Does my question make sense? I'm not very good at the terminology. I guess I'm asking about when ur using the jack to hold a piece up. How do u make sure there's no movement side to side with the head of the jack? I guess the threads become very important??
I love the cold blue colour.. It's stunning looking actually6. I never saw tat before. I'm learning new little tips and tricks all the time on channels like urs and others.. Now all I need to get is a nice little mini lathe & a dcent millimg machine. I will be saving money for the next year for those..
The cost of steel bar is crazy here in IRE. I don't know where u find the money for all this stock. LOL Steel is very expensve here atm. I guess u get better prices in the US nd CANADA..
I also watched a video from Inheritance Maching? U might know that channel? He's a bit more anal when it comes to perfection but to me thta's also a good thing. I'm not putting him down. He likes to do things a certain way.
He built similar jacks also and the threads gave him issues too. I love that u explained the issues with the threads. Dummies like me ind it hard to understand what would go wrong. Thanks for that. Brilliant job on those Jacks. I will be keeping these videos in my Mchining Playlist on here now. Love the channel. Love the energy u give off. It's always good viewing .. Thanks for the inspiration..

Thank you, thank you, thank you! I am a new subscriber and I always learn a ton from your videos!

I regularly ask my apprentices "What's the difference between a craftsman and a perfectionist?" The craftsman understands tolerances. Thanks for underscoring the point. We strive for perfection but accept results that are within tolerance.

I like the "t-slot nuts". I've got jacks, but never considered a t-nut, despite having needed to several times. Working with castings often requires them in the t-slots, and they can use different tops, including points for rough casting surfaces pushed against. I believe I will make a couple nuts to go with my jacks. Very nicely done, thanks!

I cant believe i have not seen this video before.
This is an amazing idea, and i shall make a few of these jacks.
Thank you for sharing Quinn babes :)

with some creative fixturing you definitely could make those T-slot nuts in the lathe.

You gotta dough a Clough42 electronic lead screw crossover series !

Nice channel

show me how to cut , tapers Beaten centres , with two chook's, 4 & tree jaw chuck's with out moving my talk stoke alignment . ? can you do that ?

Hi Quinn, another great video. I did make such a jack (before I saw your video) I did make a lock nut (knurled) to sit on the top surface of the jack body and it has proven worthwhile, I put a really fine finish on the two mating surfaces and it locks and unlocks very nicely but doesn't move during machining at all. Keep 'em coming, we all enjoy them.

I've never cut a thread on a lathe and actually, I don't even own one but if I messed up a thread like you did, I'd have said I wanted a buttress thread to better take the down-force.

Australian here. I've watched many of your vids and like them very much. May I ask you something? I notice you pronounce words like 'out' almost as 'oot' which makes me think you also say 'sorry' a lot (in real life, not here). If I'm right about that, why you you make all measurements in thou and not metric? I know that's how your machines are calibrated but why did you buy them like that? Or, am I wrong about where you're from?

What is the model of your Weller in the intro...need one...can't build it...yet.

Any pattern for your soft chuck jaws? They look great!

Hi Quinn
I have a Project for you. Can you figure out a good Pill Splitter. I have older Parents that a lot of their Medicine requires splitting the Pills in half. I’m making one, but it’s not turning out very good.

A retired machinist walks into a bar. He notices that the height of the stools is not consistent. He nonchalantly asks the bartender why th....
Never mind. It's machinist 'jacks' . Thought you wanted to engage in machinist 'jokes'. I'll show my way out.
Anybody else have a machinist joke to share?

Oh your not the only that struggled with the compound Chinesseum issue.

The end mill that you said is dull looks like a four or three flute, which tend to run better at higher speeds than your mill can do. Single or double would be nicer. Says the backseat machinist 😆

What are the fumes with the cutting fluid, anything dangerous?

Hey Quinn.... love your vids. Instead of hanging on to the chuck when you are threading try a block of wood between the ways and a chuck jaw... nothing for you to fight with then! Keep up the interesting tuts.

Seeing your mistakes helps relieve some of my anxiety about starting this new hobby. Thank You!

great lesson, thanks

Did you buy your reamers individually or a set? Have a recommendation?

Cool video - have a look at buttress thread, they are non symetrice and take loads well in one direction. I had "fun" figuring out the thread angles on the top (head?) of my model airplane engine...

Always start tap in chuck or morse taper tap driver, in tailstock or mill spindle for alignment and rigidity, even hand taps will power alright to full thread on tap then finish by hand bucking in and out.

What is a typical minimum height for the jack and how to determine that height? And isn't good to have a way to lock the height? i. e. so it wouldn't slowly 'wind' down from vibration? Or does fine thread make that unlikely?
Did you consider just tapping the Tee and then loctiting the stud into it?

Quinn first of all you are a very good teacher. Great delivery on the info. How about having some ideas for us beginners that are looking for ways to use the lathe to make some extra money

I definitely read that as "let's make machinists jokes"

I have a handful of sawtooth threaded scraps from every time I go and work at my friends shop who has an import lathe. I never seem to notice that the compound doesn't look right when set up for threading until after a scrap part.

In parting as long as there is even a small hole in the centre you can part almost through, then drll the part off. The part will stay neatly on the drill.

Thank you! The video was great and touched on a few things I’m struggling with as a hobby machinist. I also really enjoyed the camera angles and the way you explain everything.

Of all the stuff I watch on YT it seems like the machinist channels are the best at teaching and working together. Must be something that lies in matching that draws a certain kind of spirit.

Could you put a copy of the Tap & die charts PLEASE !!😁👍

Another great inspiration! Thanks!

Great video, and thank-you for showing the mistakes!

Good tips.

I’m new here. Howdy from Texas.
Quinn... I like your style of teaching👍

Hello Quinn, love watching your videos. Just a suggestion, a jam nut added to the jack would stabilize quite a bit. Have a great day.

Ty great vid.

Thx quinn you have helped me solve a problem i have spent many hours on trying to solve. Chinese and American 30 degrees is not the same... Suddently i can turn threads like a pro. I also have a Chinese lathe and everytime i tryed to turn threads they came out looking
horrible. Now after you talked about it it as your mistake it is painfully obvius that i should have seen the difference before.

A question: I'm not a machinist (I'm a cabinet make), so please excuse my ignorance. Why does a reamer have several inches of cutting surface on it? Isn't it really only the very first tiny edge that's doing the cutting?

you might use a pair of t slot jacks to lift a long spacer block to bridge between the jacks so you can place your work piece between them " anywhere"

Throw the pin in the freezer, the t-slot in the toaster oven the whole thing would have just fallen together.

Quinn I am a fairly new subscriber and I like your channel. You have really good shop skills and I enjoy watching you. Keep up the good work.

How did You know I was fetching a cup of coffee when the knurling appeared???!!! What kind of sorcery is this?