I do a lot of model engineering, and what's nice about the threading chart from Little Machine Shop is that it lists a column for 50% thread engagement. There's not tons of force of model engineering fasteners as a rule of thumb, like on an full size automobile for example. Using 50% thread engagement saves wear on your taps (all my taps are German and Japanese so they ain't cheap) and your dies as well. Plus many people don't realize that to go from say, 70% thread engagement to 90%, just about TRIPLES the force requires to drive the tap, *_but only gives a 5% increase in holding power !!_* . So you break your tap for essentially no gain!! Something to think about. Incidental notes: generally first four threads carries almost all the load, every thread thereafter progressively does very little as far as load carrying ability - to get full load carrying ability use length of thread equal to one diameter, and you're definitely there - just a generalized rule of thumb that covers a myriad of cases. These little rules will carry you far, except in the most demanding applications. Just my 2¢ !
It's been a couple of years now with this lathe and now after watching this video for the second time, this is the project I am going to start on tomorrow. Those die holders are rare and expensive so this looks like the project for me. Thanks again.....
In response to Mr. Douglas East. Come on guys, what makes this RUclips channel so good is that we all learn from each other. This is a great tool, I and I'm sure others see improvements in the tool that we could make and improvements in the manufacturing of it. Most of us are amateurs at this machining stuff, so by all means give constructive criticism for the benefit of us all but you don't have to bash the guy. I have learned something from every video I've watched, so Mr. Halligan142 keep them coming! Thanks
Very practical and well done. This will definitely be one of my first projects when I get a lathe. I enjoyed this series very much. Thanks for your effort to share this.
That is a Great tool you have made I saw Mr Pete had subbed to you I enjoy learning new things I am saving to get a mini lathe and need all the education I can find RUclips has helped alot Keep up the Good Work and Don't Hide your accent !!! If we all sounded the same it would get Boring real quick
I like the fast motion during time consuming operations and especially like the music played while we watch. You'll have to let us know the that are played so we can pick them up.
Great idea mate, I would change the bolt on the handle to a grub screw as I could see my knuckles taking a hit from your one, lol, for the smaller die you have you could just use a shim of sorts to centre it, thanks for the vids, I have learnt a few tricks from you.
You might want to get a vise for your drill press or a pair of vise grips, something to hold on to besides the part you are drilling. You want to keep all those fingers. I enjoy your videos, stay safe.
The drilling of the hole for the grub screw looked decidedly hit and miss! The vee block was sliding about and the die holder was jumping around in it. And was the hole anywhere near radial - I doubt it! It would be so little extra trouble to cross drill and tap properly. Or have I missed something?
Interesting idea and it works as intended. As an aside, you can cut better threads with the lathe than you will ever get from a tap and die set. External threads are much easier but internal threads will be better also if cut on the lathe VS a tap and die set. For a quick job though, it works, nice.
Good video. I think you would be better using a tommy bar for more control over your die cutting. Saves tearing your hands to bits with the knurl. How about a screw cutting demo
Hay if you are not going to use your power feed then disconnect it but when knurling is best to use your feed .I noticed in your last video your gears are running ? If you dont need dont use. Just a little tip!
What a difference after you shortened the length of the thread for the Jacobs. I suppose you saw a noticeable wobble at the drill end before you cut the 1/8 " or so off it. I watched the three parts to this build and though I am not a machinist, I can appreciate your skills. I am just not exactly sure how it came true by shortening the threaded mount :-)
Nice job, and a useful mod to an old idea (the interchangeable tool holders). I was wondering why you made it so long, but for drilling the extra travel will be useful. Set screws rather than cap heads might be a good idea...in case you grab at the wrong spot, but I'm guessing you'll always be running in back gear/low RPM, so probably not critical. Also, 3 screws at 60 degree intervals would let you center the die if it's not a tight fit, but the shim idea would do that too. As far as the safety mavens, they are technically correct and the short sleeves, clamping work on the drill press, etc. are all worth considering, but it's your shop, OSHA has no jurisdiction, and it's your risk to take if you choose to. You are in the best position to judge it anyway. 1/2 horse 9" South Bend doesn't present as lethal a hazard as a 15 hp 24" lathe does (and a simple search of the net will provide plenty of gory evidence that big lathes can, and have, killed their operators). As far as less serious accidents, like cuts, loss of appendages, etc go, the drill press is probably more dangerous anyway...mostly because most think it isn't. If you need smaller v-blocks for non-precision use like drilling set screw holes, consider scraps of angle iron. Weld a pair together at the V to make an X, and you have a useful support for round stuff. Weld one of them to a plate or a couple of cross pieces with holes, and you can bolt it down to your drill press. Just costs the time if you have the scraps. Thanks for showing the project! I'm going to be making one soon...once a couple of other projects are done. -- Mike
My Uniform Shirts & T-Shirts are sleeve-less...which was the dress code @ "Bear Machinery" in Kaneohe. Safety purposes...just saying... Good Video though...
NOT ! you made it look so easy. I decided this was not a project for me. I ended up buying a similar tool from a man in AZ. I especially liked the idea of the Jacobs chuck for holding small drill bits. Great job on this project and look forward to your next one.
i wanted to make one of them at work after seeing your vid, but im always working with mild steels and stainless steels at larger diameters. so i don't reckon hanging on to a knurled handle by hand would be effective.
Greg, with slow speed knurling, I'd put a block of steel of a milling machine parallel behind the stock. It was traveling in and out. Also, the MA accent is American, let it rip bro ;-)
sorry to keep commenting on your vids. I guess that reall proves I must watch the whole thing before comment. so, you should use a dead center with the white grease for knurling because you could break the bearing on the live center by the pressure of the knurl. those center could be expensive
I really enjoyed the videos, very informative, but I am surprised that you don't clamp parts down when drilling in the drill press. Someone as skilled as you should not have any problems finding a way to hold odd shaped objects. Please continue with the great work.
I enjoy your videos and I like your ad hoc style. I noticed during knurling that your tailstock center was too loose. Also, I see a lot of test fitting when your part is full of chips.
i can tell your using carbon taps, it seems hard to tap through or its dull. and why take the time to set up the tap straight with the tap follow when the hole wasn't drilled straight?? just sayin. nice vid and nice tools. cheers:) Denis
Down and dirty so to speak I m new to all this but what is the cause of the "wobble" on the threads just cause they are coarse? Great tool and videos man keep it up !!!!
Yeah, I liked it also and learned a lot. But man, that loud music is for the birds, not for students trying to learn from you. I'm gonna make one of these as soon as my SS check comes in. Thanks! JD
gosh allways have your work secure when working with metal. dangerous and hazardous. at best you could break stuff. but you made it. I would have pout a clam on the inside diameter.
Unless you just like making stuff it's easy to find these commercially made and not that expensive. Search on eBay RDGTOOLS LATHE / DRILL TAPPING ATTACHMENT and
RDG 2 MT TAILSTOCK DIE HOLDER LATHE even holds different size dies.
It's actually a craptastic chuck coupled with what I found out to be later a bent drill bit. Even though it is a Jacobs brand it was apparently pretty garbage quality.
***** Okay, but it wasn't as wobbly after you shortened the threads a bit. Was it that or camfering the edge or brushing the swarth away? I ask because I have a large jacob's chuck which wobbles like your did. If you don't know, that's okay too, I was just wondering if you had a solution for my problem.
ExtantFrodo2 If I remember correctly the threads were slightly long so the inside of the chuck was registering on the chamfer at the end of the threads and not the shoulder it was supposed to. Shortened it a little bit and the chuck collar sat right on the flat register on the shaft.
I cringe when I see that sort of thing. It's just asking to have your arm ripped off. Turn the damn heater on or up if you're cold. In our shop that is an automatic 5 day suspension without pay for first offense, even with long sleeves rolled up. Second offense is termination.
I have to be honest - those are atrocious working practices. Finding the centre when cross-drilling circular material is basic stuff for example. Introduce some care and accuracy and read a few turning books. I can recommend 'Lathework, a Complete Course' by Harold Hall.
I enjoy your work and creative genius. Excellent craftsmanship! However, all of my years of industrial safety training cringes at you doing all of this with long sleeves around rotating equipment. Please, with all due respect, lose the long sleeves and anything else that might get caught in your equipment. You only need to get maimed once and you're done.
I do a lot of model engineering, and what's nice about the threading chart from Little Machine Shop is that it lists a column for 50% thread engagement. There's not tons of force of model engineering fasteners as a rule of thumb, like on an full size automobile for example. Using 50% thread engagement saves wear on your taps (all my taps are German and Japanese so they ain't cheap) and your dies as well. Plus many people don't realize that to go from say, 70% thread engagement to 90%, just about TRIPLES the force requires to drive the tap, *_but only gives a 5% increase in holding power !!_* . So you break your tap for essentially no gain!! Something to think about.
Incidental notes: generally first four threads carries almost all the load, every thread thereafter progressively does very little as far as load carrying ability - to get full load carrying ability use length of thread equal to one diameter, and you're definitely there - just a generalized rule of thumb that covers a myriad of cases. These little rules will carry you far, except in the most demanding applications. Just my 2¢ !
It's been a couple of years now with this lathe and now after watching this video for the second time, this is the project I am going to start on tomorrow. Those die holders are rare and expensive so this looks like the project for me. Thanks again.....
In response to Mr. Douglas East. Come on guys, what makes this RUclips channel so good is that we all learn from each other. This is a great tool, I and I'm sure others see improvements in the tool that we could make and improvements in the manufacturing of it. Most of us are amateurs at this machining stuff, so by all means give constructive criticism for the benefit of us all but you don't have to bash the guy.
I have learned something from every video I've watched, so Mr. Halligan142 keep them coming! Thanks
Very practical and well done. This will definitely be one of my first projects when I get a lathe. I enjoyed this series very much. Thanks for your effort to share this.
That is a Great tool you have made I saw Mr Pete had subbed to you I enjoy learning new things I am saving to get a mini lathe and need all the education I can find RUclips has helped alot Keep up the Good Work and Don't Hide your accent !!! If we all sounded the same it would get Boring real quick
I like the fast motion during time consuming operations and especially like the music played while we watch. You'll have to let us know the that are played so we can pick them up.
haahaa ya did I see, put a knurl. Nice project. I enjoyed this. Good winter stuff
Mr Pete is The Man.
It is so amazing all what u can do with that machine!!! I feel like a beginner after watching your videos!!!
Another project to add to my list. Thanks for sharing!
Great idea mate, I would change the bolt on the handle to a grub screw as I could see my knuckles taking a hit from your one, lol, for the smaller die you have you could just use a shim of sorts to centre it, thanks for the vids, I have learnt a few tricks from you.
Great Video, I now know what to do with my hall of chucks that have been taken of dead battery drills that have ended up in the trash
Excellent! Going to make one of these for sure. Great video
Great video for someone that doesn't have a threading option on his lathe!!
Brilliant design. One will soon be mine! Way cool!
I will build one this weekend, great video. Thanks!
You might want to get a vise for your drill press or a pair of vise grips, something to hold on to besides the part you are drilling. You want to keep all those fingers. I enjoy your videos, stay safe.
Love the vids. Got to say though, after taking all that care (and skill) with the lathe, it was a bit of a hatchet job on the pillar drill! :) Cheers!
The drilling of the hole for the grub screw looked decidedly hit and miss! The vee block was sliding about and the die holder was jumping around in it. And was the hole anywhere near radial - I doubt it! It would be so little extra trouble to cross drill and tap properly. Or have I missed something?
Would have liked to seen you recess the set screws.
All in all great job both in explanation and demonstration.
Thanks for the info
My Makita drill didn't have a screw in the middle of the chuck. It just had lock tight on it. I had a hard time getting it off to replace it.
Thats a great tool I like it. Just get rid of that big cap head screw and its safe and a very handy tool.
Interesting idea and it works as intended.
As an aside, you can cut better threads with the lathe than you will ever get from a tap and die set. External threads are much easier but internal threads will be better also if cut on the lathe VS a tap and die set. For a quick job though, it works, nice.
This video and tool is excellent!! Props.
Sketchy machinist, hope you had goggles on doing it like that mr
Very nice ... A great project for a useful tool in the end ...
Great tool...covered many skills...Thank you for sharing. Regards.
Nice job I enjoyed this video very much
nice job. Awesome tool. Would gladly pay for one of these.
Thanks. For some reason I thought you had something special for a tap holder.
Good video. I think you would be better using a tommy bar for more control over your die cutting. Saves tearing your hands to bits with the knurl. How about a screw cutting demo
Hay if you are not going to use your power feed then disconnect it but when knurling is best to use your feed .I noticed in your last video your gears are running ? If you dont need dont use. Just a little tip!
What a difference after you shortened the length of the thread for the Jacobs. I suppose you saw a noticeable wobble at the drill end before you cut the 1/8 " or so off it. I watched the three parts to this build and though I am not a machinist, I can appreciate your skills. I am just not exactly sure how it came true by shortening the threaded mount :-)
Two thumbs up. This was a great project!
Nice. Thought about making a hand operated spindle mandrel with handle? No motor required. Perfect for these type of jobs. Regards.
Good job Greg, thanks for the video
Nice job, and a useful mod to an old idea (the interchangeable tool holders). I was wondering why you made it so long, but for drilling the extra travel will be useful. Set screws rather than cap heads might be a good idea...in case you grab at the wrong spot, but I'm guessing you'll always be running in back gear/low RPM, so probably not critical. Also, 3 screws at 60 degree intervals would let you center the die if it's not a tight fit, but the shim idea would do that too.
As far as the safety mavens, they are technically correct and the short sleeves, clamping work on the drill press, etc. are all worth considering, but it's your shop, OSHA has no jurisdiction, and it's your risk to take if you choose to. You are in the best position to judge it anyway. 1/2 horse 9" South Bend doesn't present as lethal a hazard as a 15 hp 24" lathe does (and a simple search of the net will provide plenty of gory evidence that big lathes can, and have, killed their operators). As far as less serious accidents, like cuts, loss of appendages, etc go, the drill press is probably more dangerous anyway...mostly because most think it isn't.
If you need smaller v-blocks for non-precision use like drilling set screw holes, consider scraps of angle iron. Weld a pair together at the V to make an X, and you have a useful support for round stuff. Weld one of them to a plate or a couple of cross pieces with holes, and you can bolt it down to your drill press. Just costs the time if you have the scraps.
Thanks for showing the project! I'm going to be making one soon...once a couple of other projects are done.
-- Mike
My Uniform Shirts & T-Shirts are sleeve-less...which was the dress code @ "Bear Machinery" in Kaneohe. Safety purposes...just saying...
Good Video though...
Great job man will soon make one of these too.
Thanks
I need to make that tooling for my mini lathe.
NOT ! you made it look so easy. I decided this was not a project for me. I ended up buying a similar tool from a man in AZ. I especially liked the idea of the Jacobs chuck for holding small drill bits. Great job on this project and look forward to your next one.
Kenneth Bartlett :-) It's not too bad once you get the hang of it.
Kenneth Bartlett
that girl got beautiful voice and looks shes pretty
I have a reverse on my Waller Turner drill press so I can power tap with a Jacobs ball bearing chuck only!
Another great video, thanks again // Sweden
for the smaller die u could wrap a shim around
Nice tool.
Nice job! The die holder I made is all one piece. It goes straight in the tail stock. I don't hold it.
Very nice indeed.
Great design--Thanks!
i wanted to make one of them at work after seeing your vid, but im always working with mild steels and stainless steels at larger diameters. so i don't reckon hanging on to a knurled handle by hand would be effective.
Good job Greg, thanks for the vid...
Nice project, congratulations!!!!!
great series Thanks
Greg, with slow speed knurling, I'd put a block of steel of a milling machine parallel behind the stock. It was traveling in and out. Also, the MA accent is American, let it rip bro ;-)
sorry to keep commenting on your vids. I guess that reall proves I must watch the whole thing before comment.
so, you should use a dead center with the white grease for knurling because you could break the bearing on the live center by the pressure of the knurl. those center could be expensive
Good stuff
I really enjoyed the videos, very informative, but I am surprised that you don't clamp parts down when drilling in the drill press. Someone as skilled as you should not have any problems finding a way to hold odd shaped objects. Please continue with the great work.
awesome job man , i would kill for a metal lathe
Muy bueno!!!! Gracias!!
I wish I could show you the pictures of my fellow co-workers who's sleeves got caught in the machine and tore them op
Great vid! This is my next project.
I enjoy your videos and I like your ad hoc style.
I noticed during knurling that your tailstock center was too loose.
Also, I see a lot of test fitting when your part is full of chips.
I also have to add that I thoroughly enjoyed your hand fitting of your taper to the tailstock. That was very informative and useful.
no thanks i'll get mine from neil butterfield in arizona but you did a very good presentation very helpful fo a young learning machinist good job
this guy would be ran out of every machine shop i have worked at
Douglas East Oh come on Douglas,don't be so critical. I will be looking for your next video.
He the greatest that ever lived!! (or at least he thinks he is)
Nice work...
Very Good Videos, Thanks
i can tell your using carbon taps, it seems hard to tap through or its dull. and why take the time to set up the tap straight with the tap follow when the hole wasn't drilled straight?? just sayin. nice vid and nice tools.
cheers:)
Denis
nicely done
Down and dirty so to speak I m new to all this but what is the cause of the "wobble" on the threads just cause they are coarse? Great tool and videos man keep it up !!!!
Cool!
Not sure about trying to mill a Morse Taper as accuracy is imperative.
He would be better using a vice to hold the work while tapping
good job
Nice Tool...
very good
Yeah, I liked it also and learned a lot. But man, that loud music is for the birds, not for students trying to learn from you. I'm gonna make one of these as soon as my SS check comes in. Thanks! JD
Muito boa ficou pratica,vou fazer uma para min parabems.
gosh allways have your work secure when working with metal. dangerous and hazardous. at best you could break stuff. but you made it. I would have pout a clam on the inside diameter.
What kind of lathe do you use?
What did you make for a tap holder?
awwwh... that 50hz hum is terrible when you're at your lathe... but other than that, very nice :)
Nice job :-)
you got to get in the habit of blowing away the chip before screwing any thing together migt lock up and never to get apart
24:14 work spins in chuck
Unless you just like making stuff it's easy to find these commercially made and not that expensive. Search on eBay
RDGTOOLS LATHE / DRILL TAPPING ATTACHMENT and
RDG 2 MT TAILSTOCK DIE HOLDER LATHE
even holds different size dies.
Wouldn't it be safer to use a dog rather than "hands"?
I like it..I'll be making one
excellent I likeit!!!
What caused the wobble in the Jacobs chuck at 14:33 ? Did shortening the threads make it run true? Why? I can't think what the explanation might be.
It's actually a craptastic chuck coupled with what I found out to be later a bent drill bit. Even though it is a Jacobs brand it was apparently pretty garbage quality.
*****
Okay, but it wasn't as wobbly after you shortened the threads a bit. Was it that or camfering the edge or brushing the swarth away? I ask because I have a large jacob's chuck which wobbles like your did. If you don't know, that's okay too, I was just wondering if you had a solution for my problem.
ExtantFrodo2
If I remember correctly the threads were slightly long so the inside of the chuck was registering on the chamfer at the end of the threads and not the shoulder it was supposed to. Shortened it a little bit and the chuck collar sat right on the flat register on the shaft.
***** ahha, I see. I will look into my chuck to see if something like that is gong on. Thanks and have a good one.
Ml ml
some day in the future you'll be a machinist. Keep practicing.
Stuff flying all over the place and falling on the floor. Just like my shop.
I cringe when I see that sort of thing. It's just asking to have your arm ripped off. Turn the damn heater on or up if you're cold.
In our shop that is an automatic 5 day suspension without pay for first offense, even with long sleeves rolled up. Second offense is termination.
👍👍👍👍👍غالي وغالي
這麼準確切的車床真好#&$@*‵！
Muy mal...las piezas se deben sujetar
就因此我就想要一台車床cnc~
良策
I have to be honest - those are atrocious working practices. Finding the centre when cross-drilling circular material is basic stuff for example. Introduce some care and accuracy and read a few turning books. I can recommend 'Lathework, a Complete Course' by Harold Hall.
You mean, "DIE" Holder don't you???
I enjoy your work and creative genius. Excellent craftsmanship! However, all of my years of industrial safety training cringes at you doing all of this with long sleeves around rotating equipment. Please, with all due respect, lose the long sleeves and anything else that might get caught in your equipment. You only need to get maimed once and you're done.
Aluminum is the worse material for tool holders and alike.