Make Machinist Jack TIPS
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- Опубліковано 10 лют 2025
- This is a part 1 of a 2 part video series on machining a jack.
Here is a link for the 3D printed pattern for the jack. www.thingivers...
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An aluminum jack isn't completely useless, as compared to a steel one, it's only about half as useful when you look at its mechanical properties. Thank you for all that you do in producing some of the finest edutainment on UA-cam.
Glad to see you back, Sir. My UA-cam shop teacher. MrPete, you must have been a heeluva teacher. The teacher that all the others sent their incorrigibles to (in those days the MALE incorrigibles). You even inspire me and I am old and cynical. Love ya, MrPete.
Thank you very much
He _is_ a great teacher!
52 years ago I got into casting jewelry... mostly lost wax but also other pattern and mold medias. I have been fascinated by taking metals to liquid, and back to solid in a new form ever since. I enjoy these casting videos immensely. Its been years since I did any casting, and may never again, so youtube is where I get to enjoy seeing it done. So, Lyle, more please👍.
Thank you very much, I’m glad you like the videos. Sounds like you had fun casting in the olden days
Thanks Mr Pete. I absorb this information like a sponge, and I like it!
Two things made me think of my dad. First I said that's just like the pocket knife my dad carried. Then you showed Deft... That was his go to varnish. He restored antique furniture.
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I like the wooden pattern, some of us old guys will never use 3d printing. Keep up the good work. Be sure to let us see Henry with his new vise, and work bench!
Yes
What is it about that bell curved base flare? Man, that is so pleasing to my eye. I like where this is going.
In college physics, our professor let us 'pick' our grade at the first of the semester. He put out the C - level, B-level and A - level requirements. It was a demanding school, so earning a B there was like a 7.0 at a state school, no grading curve. I took the B-level route, but did the A-level requirements as time permitted. I got my B+. You reminded me of that with the "better students" section of the video. I appreciate that. If I'm rushed, I always come back to finish up after the day has finished with me.
Thank you, yes that curve is extremely pleasant to the eye
Love those little machinist jacks! I like how you had the students cut a different pitch on the threads so they couldn't copy each other's setup, nice teacher trick, Tubalcain, you always have great stories. CAD Cardboard Aided Drawing and WAD Wood Aided Drawing lol love it ! Really enjoy the discussion on the split pattern making.
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I worked as a maintenance technician in my youth alongside a seasoned shade tree technician. He could barely read and was limited in that he had almost no electrical skills. But he owned some tools that I envied. He owned two Armstrong planer jacks like the one you showed in the catalog and the same size as your Simplex jack. I borrowed those jacks as often that he allowed me. Now retired and owning thousands of tools I still have very few screw jacks, and most of them are shop made. I am still looking to add Armstrong jacks to my collection, but really have almost no need for them now. Armstrong made superior tools in their day. I own over 240 clamps and treasure my Armstrong clamps more than any other brand.
LOVE YOUR VIDEOS!!!! i'm a 1948 model and can relate to your comments!! For what it's worth, I use brown paper (grocery bags) when i glue two halves of wood together to turn on the lathe. They separate easily and don't come apart while turning. For clean up i use a belt sander. Not sure if that is precise enough for making a two part pattern.
That is a good suggestion, to use brown bags. It’s a little thicker than white paper
Another great video Mr Pete, thanks very much. I particularly liked the speeded up clip of the aluminium cooling, shows the whole shrinkage thing very well. Cheers, Alan.
Thanks
I am 12 and want to be a machinist but all I have is a 1974 Rockwell drill press that was my great grand father and a wood lathe. I have a neighbor that has 6 CNC machines and gives me aluminum plates, bar, angles, and round stock and I cut it with a hacksaw from the 60s and files from the 60s and am trying to find a lathe or mill and my neighbor knows someone who is selling a great working shape for $800 because he just wants it out so I’m saving up by trying to sell my turnings online. Love your videos kept them up!
Congratulations to a 12-year-old boy that is interested in such great things. Stick with it. And save that money and get that machine
mrpete222 my uncle has a Bridgeport and a big lathe but he lives 3 hours away and I turned some brass and that is all of the experience I have but know a lot because of your videos mr. Pete and I watch the extra credit!
G’day Lyle another excellent video. The video of the shrinkage was a nice touch, I have poured many castings, witnessed the results but never sat there to watch it happen, thanks.
Cheers
Peter
That little clip was an afterthought. I love it myself. I am wash it over and over and over
I rise at 2 am and always look forward to your videos with my first cup of coffee.
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Very cool to see the riser feeding the casting as it shrunk, Tubalcain just really enjoy the casting videos
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immensely satisfyingly to watch a project come to fruition when you start from your own castings, instead of a chunk of mass produced stock. inspiring .
Very true
Mr. Pete, I ALWAYS go for the extra credit!
Always look forward to your uploads. 1903 Springfield barrel tenons had square threads, my dad used to curse them whenever he built a custom rifle on one of those actions..but he did it nonetheless! Thanks, Mr. Pete! :-)
I remember my brother telling me that
Also square thread on a Schmidt-Rubin Swiss army riflle. At least the 1911 version.
I think your father must be very proud of the educator you have become! How many teachers will ever affect as many students as you have? I will never attempt most of what you show yet I watch the videos over and over. I would love to see you build a multi cylinder steam engine. It would also be fun to build some sort of dyno to see how much power they can generate.
Thanks
Extra credit student here: I agree that the 3D CAD patterns are marvelous, but I think it is important to understand the rudimentary processes of pattern making. People don't think anymore, they just let the computer do everything for them. Thanks for the WAD lesson.
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Keep doing it old school Mr. Pete! A well made wooden foundry pattern is like a work of art.
Thanks
Petrobond catalyst is propylene carbonate by the way. Methyl hydrate or a high percentage isopropyl alcohol can be used instead in a pinch.
If only you were my CDT teacher (metal work) in the 80s in the uk considerable more would have sunk in to my brain .Thanks and keep the good work up and I might learn something useful.
Thank you very much, I take that as a high compliment
I love how you can go from a concept to a solid aluminium object to serve a purpose.
Thanks
I’ve got to find someone around here to do some casting for me when in high school I pretty much had the run of the woods/metals/small engine shop in my junior and senior years and was in there for the majority of my days and I discovered a lot of the old metal casting stuff and lathe tools but of course the teacher didn’t know how to use any of it as any foundry or machining was gone out before he went through school here so with not really knowing anything we took some of the old black sand and some forms and cast a few things in I believe Babbitt material as we found quite a few ingots of it. A fond memory of discovery.
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Self motivated
Once again your knowledge is notable. I wish I was younger and had access to the things you have. I would be in hog heaven. Thank you for your time and expert working skills.
New Mr.Pete TLA...WAD to add to wikipedia. 😊 Thanks for explaining the pattern splitting setup, common sense sometimes needs a kick start. Watching foundry casting never seems to get old. Would like to try it someday, but man one almost needs a seperate shop for all that gear.
Very enjoyable...looking forward to the next episode...
Yes, it requires a separate shop
Those jacks will be very nice. Love the casting..
Get back to work Randy. Shops don't build themselves.
@@tedsykora1858 That is for sure.
This takes me back to 1971 and high school. thank you
The close-up of the metal feeding into the shrinking casting was a very good visual. The cad designing is not an imposition but it is educational to see wood pattern making anyway.
😁😁😁
Thanks for sharing Mr. Pete. Personally I glad you bounce back and forth between 3D and the 0ld Ways.
Thank you for appreciating that
Yes Mr. Pete222 that pine block of wood you first used was pretty ruff. tho it could of been saved with a little sand paper. BUt Maple was a much better choice. And I always stay for extra credit. I day dreamed in class too much. So I needed it. I even paused your video to go look something upon the web you were talking about!
I even made a pair of those Jack screws in my Machine Tool class in tech. school. It is easy to make the ACME. thread. just hand grind a HHS cutter to the size tooth pitch. you need. I did it as a student. I know you can do it.
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I love my old tools. I have a Speedex Wire Stripper I bought for a dollar at a swap meet when I was 13. Have had it for 55 years now. Still the best stripper I use.
Yes
Bravo! You are right, as usual. Sports programs are the "sacred cows" of American education. Why does the football team get the expensive new weight room while the physics department goes without desired equipment? After all, those "student athletes" could simply get the same expensive weight training facilities (as well as complete their educations) later on in state prison.
Your discussion of pattern-making is the most interesting part. Artistry is involved in this. You should consider providing even more detail.
I hung around for the extra credit. It's easy to succeed in school. "Just show up and pay attention". My father told me this back in the day.
Your father was right. But hardly anyone would put that advice to use. And you are so right about the athletic program
I always enjoy your casting videos.
But then, I enjoy all your videos!
Thanks.
Thank you very much
Greetings Mr.Pete !! From Monterrey,Nuevo.Leon Mexico.
Very nice to see you in 2020.
Hello
I don't see anything wrong with developing knowledge and then using it solve problems. Yes the idea might not be original. But there a high chance over the years you developed something that combined those years of learning. Into something unique/original. But I am sure you've influenced more people that most get a chance too. Just from your years at a shop teacher. Even before your youtube channel.
Thank you very much for the kind and encouraging comment
my university prof friends tell me the same thing, millions for sports, beautiful buses for travel, etc, but little money for bread and butter items.
Yes
Hi also from Melbourne, Australia - a bracing cold and frosty night outside.
On front of the fire, watching Mr Pete.
Even one of the two dogs at my feet taking some interest in the video.
Other dog clearly has no interest in machine shop work, then again she is a Labrador.
lol
Another interesting video. I like the casting videos as it’s something I like to do, although I’m only able to cast pewter at present.
lol thanks 👍
Thanks Mr. Pete, wooden pattern is nice, not everyone has 3d printer...
Yes
I love the foundry work, looks great Mr. Pete!
Thanks
Thanks Mr Pete, I was hoping you would cut a square thread and show us newbies how its done.
Dear Mr Pete, teacher, sir, I have not watched this video yet but will. I just wanted to say that I have been thinking about machine jacks lately because though I do not have any, I want to make some type of Screw adjustment legs for my Chinese 7x10 mini lathe. The lathe has a bit of twist in the bed that can be gotten out by shimming and bolting down the lathe. It also needs to be set up about 3 inches higher for my needs. I had some big rod couplers over the long hold down screws which I then shimmed to take the twist out to take the taper out of my turnings. But I have since taken that apart and am rebuilding a lot of stuff and am trying to figure out a method of having adjustable legs 3" high that attach so they can draw down or up any of the four corners with the turning of a screw ...then locking down. So machine jacks are in my mind trying to figure out how to rig something like them as legs. Maybe you could offer some insight...Thanks.(Why am I tempted to call you "Doc"? Maybe it's because I see you as the wise old professor...)
Maybe this video will help you
I swear. You say the same things about your teaching days that my metal working instructor says about machine tool acquisitions. He tells me how the new female principal would enter his classroom back in the day and dream of selling off all that equipment and turn the space into a pottery class. When the new high school was built guess what they left out of the mix?
It's a shame how the powers that be are so ignorant. This country is in a pickle now because of it. Skilled hands simply cannot be found anymore.
As always, good work! Stay healthy and keep the videos coming!
That is very sad. Don’t get me started talking about a female principal that we had!
@@mrpete222 Some how I get the feeling I may have already heard your story from my teacher here. LOL
Mr. Pete, I saw your knife and wondered if you have ever done a video on pocket knives? I always used to carry Case knives, do you have a preferred brand, size, etc? Great videos, keep up the great work. Many thousands of people are relearning machine shop because of you! Stay safe.
Are used to love case Pocket knives. But then they made them into overpriced collector items with worthless stainless steel blades
I would have tried a string wrap around the split mold. Just remove it in areas where you need to turn. Great video. Big fan
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I believe the secret is resin. It flows around the hot metal making for smoother pourings. It tends to bind and make sandstone afterwards - but that can be broken.
Hi Mr. Pete.
I asked you the other day if you had to buy one, what would be 1st. A mill or lathe? You said a lathe. So I followed your advice and because this is all new to me and I think most of the things I'd like to make are small I bought a mini lathe. After I ordered it the guy said, anything else I can get for you? I said yes. I'll take a mini mill also with some tooling for each. So you see I did take your advice and got a lathe 1st😁.
Now I'm looking out at the driveway for a truck.
I can't wait. This a a retirement gift to myself from the wife
That is wonderful. I’m not used to people taking my advice, so that’s surprises me. Yes, I bet you can’t wait. Have fun
I do enjoy warching the casting process.
Thanks
Mr Pete I'm not a computer fan I guess because I'm old like you but I would rather make a mold of wood than have a computer do it for me maybe I'm old fashion but at least it's something that I made with my own too hands much more gratifying thanks for making taking the time to make your videos for us
Thanks
For the 'extra credit', could you have rigged up a pantograph type jig to copy the original? Adjustment of the mid arm length could be tinkered with to produce a slightly larger pattern to possibly compensate for the shrinkage factor, Any thoughts on this idea?
Yes, but I was still be working on the pantagraph trying to figure it out
I have read somewhere the catalyst is essentially methanol, the petrobond powder is a organo clay called bentone 34 (not the same as bentonite) for those who are interested...
Thanks
Great videos, so informative and easy to understand. I might have gotten into machining if I had you for a teacher when I was younger.
Ernie Bastide from Canada
Love you video very educational. Please keep making your videos. I wish your were my shop teacher.
Thank you very much for watching, glad you liked it
Just for the sake of conversation, could you have done the casting as a deep draw pattern with a riser to account for shrinkage? Always love your videos! Informative and fun to watch.
Probably, but then I would’ve not had the spigot
@@mrpete222 very true
I used grain alcohol as the catalyst. Worked great.
Dan Coleman
Where do I get grain alcohol
@@mrpete222 Everclear from the liquor store. You can just imagine me explaining that to the principal to get my P.O. signed.
Loved the time lapse shot of the cooling/ shrinkage.
Thanks
Ditto. I never stopped to think about what occurs it until I saw the time lapse.
we get our sand from lake mi washed and ryied also yuma mi cast foundry cmi cast parts we make exshaust manifolds and use to make the twin i beam on ford trucks
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Awesome Mr Pete
Another outstanding, informative and entertaining video! Thank you for sharing your knowledge with us.
Thank you very much
Good show! Enjoyed it.
very smooth finish for a casting! I guess it's part sifting the magic Petrabond sand and part that the part was sealed well. I love watching your vids. what to do when you run out of Petrabond or do you have enough for life? haha
I have 500 pounds of it in the attic. I will never run out
As always thanks for sharing looking forward to your next video
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It appears that Mr Pete is some kind of superhuman, he moved that 2 ton jack as if it only weighed 20 oz.
Hi, from Melbourne, Australia
Wqw, very long distans !
Hi from Romania, EU
Hello from America
Antelope Vally California here Good morning world it's 6:14am P.S.T.
Mr. Pete chasing the Cheerleader Girls was more fun than any class .every now and then one would let you catch Her .
They wouldn’t look at me when I was in high school
There you go again, the epitome of perfection. Sure wish you were my neighbor! Probably best you aren't cause I'd never go home! Come on with number two!
lol
Hey tubal.i agree they are beautiful but the missus moans when I put lumps of steel on the mantelpiece
Let her moan, that’s what we do
I’m sure you’ve had this suggestion before, some of us wood turner’s have found double sided tape performs well when turning!
I will have to try that
Can’t Waite for the other type of jack
Thanks for the great informative video. Always enjoy your foundry vids👌
Hello Clarke
Another satisfying and educational lesson. Thank you.
Thanks
Henry is a very lucky boy to have a woodworking vice made for him by his Grandfather Mr Pete and he will also be able to watch the videos on the making of his vice for many years to come.
Yes 👍👍
My tool and die friend is appalled whenever he sees sawdust on my South Bend lathe. Glad to see some sawdust at the 14:22 mark.
Yes, I thought more people would criticize that. I don’t believe it hurts of thing. But it is messy
The jack at 3:49 that you think may be home made looks just like a Starrett jack that I have. They also come with 2 risers.
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21:44 - I just about every casting video I see, they pull the part out of the sand almost immediately. What would happen if you cast the part, then just left it there until later when it cooled, and then removed it? Would it affect the composition of the metal at all? Just curious. (I only ever cast one thing in my life... in high school... circa 1977.
23:30 - So the shrink rate is constant for the type of metal as in (using yours as an example) 0.04" per every 2.5"... so if you knew how large you wanted it, you would know the offset, make the part, and it would be "reasonably close" to the desired size. Yeah?
Letting it cool slowly could potentially slightly affect the metal's properties, but not by much. And in theory the shrinkage should be equal in all directions, but holes tend to shrink less than outside diameters as far as I know.
A pattern maker will normally use a shrink rule to do the measuring. I have shown that and other videos. Why do we open them right away. Quite simply we can’t wait to see the results. We are actually only children you know
Mr pete , what is your aluminium source?
Do you use old engine blocks or ????
4xxx or 6xxx aluminium ??
Please explain us,so we learn a little bit more !
Automobile pistons are by far the best source
@@mrpete222 Thank you mr Pete,learned already.
Awsome project!!!! Does the rate of cool down of the casting affect the overall metallurgy/grain structure/hardness/elasticity of the casting?
Yes it does.Depending on the Alloy. But I believe Mr. Pete is using almost pure Aluminum. His casting are the softest of all the aluminums. .
@@markthompson4885 I'm just trying to figure out if it's better to let it totally cool in the mold or maybe it doesnt matter. Personally I would be impatient and want to know as soon as possible if the casting was acceptable or know if i needed to start over while the furnace is still hot.
@@andrewevans1658 I'm like you I would be too. I've done a lot of casting for lead bullets aluminum acts very simular. I would give the aluminum at least 30 minutes to solidify. Of course it will still be very hot.
Very Interesting. I am familiar with the Lost Wax process for Cast steel work.
You're a jack of all trades!
lol
Elimination of “shop” classes is one of the biggest mistakes ever made in this country’s educational system. Beyond teaching young men and women how to use tools, above all else, it taught them how to solve problems, use their imagination and to take an idea and follow it through. So very sad 👍😊 Thanks Mr Pete for keeping the dream alive!
It is sad, but most people in the educational system would disagree with us
You can still get the Petrobond sand and components from Midwest Technology Products. They also have the Mini Mite sand muller for $4,000.00.
Thanks
Pete, could you pour an aluminum base with a steel insert? That would
improve the strength by at least twice.
I am working on a video where I make more Jack’s. They will have a steel insert with the thread
5:16...so, if you are using "close-grained' wood to make the pattern- does that mean that you are using "tight w.a.d." casting?!!
(get it? get it? get it? snucker-snucker-snucker!!!)
lol
1:41 I am curious about those blocking jacks they had mounted on an angle and how they got them to stay. Also why bother with a split pattern? couldn't you have just put the pattern in the sand upside down and vertical and let the boss you hang onto double as the sprue and the gate? Using a dowel for the sprue/gate end would have made it easy to have made that a flat bottomed pattern. Of course I have 0 foundry experience so maybe not! lol
It looks like they have blocks in the t slots that protrude above the surface of the planer.
Hi, Stupid question and no offence meant, but if you turn the pattern would it not have been just as easy to turn the part in the first place. or am i missing something? I still watched and enjoyed the whole video. Thanks for sharing. John (GB)
Of course. But imagine if you wanted to make two of them or 10 or 500,000
@@mrpete222 That makes sense thanks for your reply. Take care
Nicely done Mr. Pete. BTW: what speed do you run your lathe to do wood turning? I'm thinking it's probably a lot faster than metal...
At the maximum
THANK YOU...for sharing. Watched and very much enjoyed.
Thanks
I'm primarily a woodworker, but nonetheless really enjoy your videos.
Do you think you could make a video on turning wood on a metal lathe? I think machinists might be especially interested in this if they don't have access to a wood turning lathe.
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Great looking casings. Shrinkage is always a problem.
Yes
Like your videos! BR Anders from Sweden
Thanks
I would of thought that if you made the part as a single piece on the lathe. Then taken it to the bandsaw and cut it down the middle to create your split. Then if needed add paper or some other material to make up for the kerf the blade. you would be golden.
Also I would be more than happy in the future, to help you with 3d models or printing if needed. Your sharing your knowledge and experience. The least I can do is share my skills and knowledge in return.
Thank you, I may need the help. I have cut through patterns like you described. But only when the final dimensions and appearance are not that critical. You really can’t restore the geometry
G'day from southern Tasmania.
Hello from the northern hemisphere
Real handy size for like a 12x18" granite 3 point level. If i start with casting I think I'll start with somthing I can melt with the little torch A thimble size crucible too. Small stuff can be real useful also. I have two one inch shank bolts that next time i set up to thread I'm going to thread 5/8 10 acme those and a tool makers vise bolted to a right angle plate with a foreedom grinder and a v block allow for hight adjustment relative to a 5c collet index for split pointing drills a homade collar at the back with a 3" 75 mm pin set the angle with the index pin on the vrenier .lock the collar pull the pin out of the vernier and now the 5c spindle slides in and out on the 3" 75 mm pin and the angle you set the spindle to by locking your homade lock collar will slide in and out on that set angle machinest jacks are just sooo meat and potato's good stuff again big THANKS
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Great idea , thank you for the video, i think i will do a small project and cast a few of them in bronze.
PS: have you ever done bronze casting?
Yes, but it was art casting
I like the rant on school spending..mine is why post only athlete championships and not academics outside the schools.
Yes
i watched a russian guy add a chacoal bit to the aliminium melt,is this to add carbon to harden.?????????any idea
I do not know
I see I'm not the only one awake before the sun. Yeah, the videos are enjoyable. Have you made any cast iron casting? You know what? I'd say these tools you have; came in handy over the years and more so these days of Covid19 (2020's version of Stalag 13) virtual lock down by some local mindless wonders in office. Have a nice day.
Be thankful they have the brains to try to contain the China Virus
Yes
Still here mate 😉
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Every time I watch one of your videos, my mind says you can do that. The only problem in this case is no foundry. Would love to pickup the equipment some day to build a nice shop.
How much would you estimate it would cost for a do it yourself foundry? Thanks for the good work...
$1500
Miller's are very expensive ., you can build one and several UA-cam sites show how.
Great video thanks.