Mr. P. From this video and others you've uploaded, it's OBVIOUS you remain a VERY fine teacher. Those working in the schools now could learn quite a bit watching you. As far Bessemer process steel goes, basic oxygen process is a close as you get these days. However, blowing air leaves some nitrogen in the steel and that leads to precipitation hardness. Eli D.
mrpete you are the only person on YT who knows how to tap a hole properly. Great video as usual, very informative, the newbies will surley benefit from your excellent engineering tutorials.
@@mrpete222 The best teacher! I was lucky enough to work at a major manufacturing facility that had in the toolroom a Rigid ™ pipe threader that had the full accompaniment of dies for both sae and metric allthread. If I'm not mistaken there was even a die for a large left hand fine size. Thinking might have been ¾.
MrPete, You're wrong about the tapping effort not showing up on the video. As a person who has done a lot of tapping I can see the difference in your hands between the two materials. Thanks for another informative video.
Thank you Again Mr. Pete ! I just learned something After All these years of using a threading die , after watching this video I learned I was using the die handle upside down ! Makes more sense putting the adjustable collet on the un-threaded portin of the stock to hold it straight !
I am absolutely appalled. At myself. These two #176 videos are gold! They answer many questions I've found as new low carbon fights back at machining it. Not always but when it does, it fights hard. Working on governor parts for predecessors of your old Minneapolis Moline and will redirect my efforts. Thank you!
Try these on mild steel. They are absolutely brilliant to use and leave a great finish. I’ve been struggling for years to get a good finish on mushy cold and hot rolled bar and these did the trick. DCGT070204-AK H01/DCGT21.51-AK H01 CNC Aluminum Turning Blade Carbide Inserts
Great video. When I thread cold rolled steel on my lathe the threads are a bit rough so I do the last little bit with a die. This makes better looking threads but not all that nice. Thanks for sharing.
HI mrpete, Just like you mention HSS is the way to go if you plan to do more than a few taps or fillets, and, on stainless the carbon tool will just dull mots of times on the first pass...... And, just break in the hole. Even in aluminum cheap tools will stick and break. Keep on the great teaching.
Thank you Mr. Pete once again!! I've found that HSS and carbide cutting tools on threading applications are like night and day, especially when threading hot roll or tool steel on small lathe. Yes, the cost can be higher but a bloodhound will find a good deal out there.
Thanks Mr.Pete, very good experiment. I see this at work a lot machining forged steel vs. cheaper burn ring steel...I don't know the steel numbers off hand but they do machine differently, also on occasion machine into a hollow spot (inclusion??). Your videos are helping me quite a bit as I learn the machining trade, thanks much!! Also just paid for a Bridgeport series 1, j-head and in great shape for less than a grand with tooling, I live in Massachusetts where a lot of manufacturing was done and machine tools are plentiful and reasonably priced around here...Thanks again Mr.Pete keep up the great videos !
Mr Pete, I have used scrounged mystery metal for years and had some very wild results. One chunk produced the most bizarre iridescent purple chips I have ever seen. Another prime piece of aluminum rod 2 inches in diameter by 3 feet long turned out to be the nastiest stuff I have ever worked with as it would only tear and not machine well no matter what I tried. It wouldn't even file smooth. I totally relate to your attempt to demonstrate this concept and I suspect you had such similar results between widely different alloys because of the new modern carbide bits with their computer generated profiles that cut so well in any material. If you had used HSS bigts I bet you would have had the dramatic demonstration you were looking for. Thanks so much for all you do!
Thanks Mr. Pete, for another informative video. I look forward to all your new videos. I can't help to wonder why the steel companies didn't standardize their color codes. God bless and thanks again.
ANOTHER GREAT VIDEO...make sure use vice that is secured to the drill press table when drilling. If drill grabs the work piece you may break a finger or two if you are lucky, otherwise keep the phone number of near by emergency hand surgery center handy...
The lead particles in the matrix of the 12L14 act as miniature chip breakers at any cutting speed. At higher speeds and pressures where temperatures are much higher, the lead also lubricates the passage of the chip across the cutting edge. THat was terrific !
Thanks Mr. Pete! My takeaway was that the threading insert you used was so good that it evened out the differences in machineability between the materials. You could really tell the difference when you used the die method. Perhaps a Part 3 would be in order, using a ground HSS tool?
mrpete222 One of the major goals of the guys who developed the inserts is to get good machining with minimal lubrication, on a wide variety of materials... And, yes, I need to look things up in the books before I try to get too far into a project - the variety of choices is staggering...
Mr. Pete, A great series. where I work now we machine 6061 t6 aluminium almost exclusively. I often make the comment to new guys that come in and only experience 6061 that if I had to go back to a job shop that does many different materials I would have to relearn machining. Easily half of the difficulty of machining steels is figuring out the proper speeds and feeds for the many different alloys. Regards
6061 T6 is my first choice unless i need the strength of steel. just be carefull when drilling or taping and remove them often. if you break a drill bit or a tap off in a piece of aluminum, you will have to throw it away and start over. most projects can be done with aluminum.
Hot Roll vs Cold Roll. When machining steel that need close tolerances consider that Cold Roll steal will have lots of internal stress that will cause warping when machines. Hot Roll steal will not have the high internal streses and will be less prone to warping after machining. Some of the internal stresses of Cold roll steal can be reduced by heat treating. Raising and holding the temperature near 1000F. Machinablity of steel can also be improved by normalization by heating the steel above its critical temperature (usually about 1600F).
Here from the first machinability video, also very useful. (I think it’s ok to tell people brand names though: Given all your experience, if you like the threading tool a lot, we’d love to know what one it was! :-)
Seeing you cut through the different materials is a testament to how well setup your lathe is, Tubalcain. I was machining a piece of S7 the other day and it gave me grief, especially in the cut-off operation. I get my materials info from here: www.azom.com/materials.aspx
It’s very interesting to see the comparison of the difference in machining the different steels. I did not hear you mention any advantage over one another in the use. As in the strength of the threads from pulling between the steels??
Tubalcain, I don't know how old the steels were in this video, but do you think improvements in steel or the carbide tip technology is responsible for the surprising results? Clearly the tapping segment tells the story most vividly. I'd really like to see an adendum to this with some ground HSS lathe tools. Great stuff, Sir! Thanks again!
Thanks Mr. Pete. Another good series and like that this one deals with problems a lot of us have in threading different materials...especially if you have funky dies. The threading bit was impressive and wonder if it could thread the tool steel as well as it did the CRS and 12L14? I do have a couple of questions that may erupt into firestorm about Hex Dies versus Round Dies. I even went back and watched your MST 4,5 & 6 to see if you answered my question....but it wasn't clear. I noticed you used hex to cut your threads but was told that hex dies were for chasing or repair, not cutting and they don't conform to common 2A specs. 1. Are there hex dies for cutting and if so how can you tell the difference between them and chasing/cleanup dies? 2. What brand of cutting dies do you recommend? Thanks Much...PJ
I use whatever I have on hand. Some of the hex dies seem cheap.. Most all of the small dies are carbon steel. You can get HSS dies only from industrial suppliers & they cost a lot. The carbon steel ones dull fast.. Cleveland brand was best--if they still make them.
mrpete222 Thanks I'll be on the lookout for them...I know they still make drills. I have a few older Vermont hex dies that are pretty good but my 1" round import sets are carbon and a few of them I would be better off using rock and chisel. Even the Craftsman are imports now...what ever happened to Sears & Moore Drop Forging? To me these are tools that require the best I can afford...much better than messing up a part or pulling my hair out. Saving my Shekels. Thanks Again for all you bring!
The complete sets in a nice plastic box from sears etc. look great. But they are carbon steel. Unless a tool is marked HSS, you can be sure it is inferior.
Hey, have you thought of using a time lapse camera? I think that with one of those, you can show a lot more in detail without making the video any longer and yoy can still explain concisely with subtitles of what's going on? But you may need someone to integrate the time lapse and normal film. I bet if there's a skill center nearby that has filmography classes. I'd bet a student or two may enjoy editing and splicing or whatever its called. Just a thought.
mrpete222 Well if RUclips has done anything, it has taught a lot. I'm sure if you Google how to use a time lapse camera. It'll show up. If i come across an instructional video, I'll try to send you the link. On another note, ever thought of hooking a shopvac to your lathe to reduce the mess? I just have this idea of taking a large cereal bowl, cutting out the middle just enough to fit the hose. It would have to be a bowl without a flat bottom though. Just a thought I'm throwing around. Would also love to see you make one and adapt it to your lathe.
Please share the threading tool. I am looking to get some carbide pre sharpened threading tools and that one looks like a dandy. If you don't want to do it in the comments you can send me a private message.
I have no experience with Shars thread cutters, etc but Amazon is running a sale on US made (in Texas) Dorian Tool holders, etc that are at times cheaper than the China stuff. Prices vary, as I've noticed, by the hour even but search for Dorian Tool and you'll see some of their stuff marked down by as much as 78%. I've bought a few hundred dollars worth of their stuff already and still going. I paid $23 shipped for a Dorian thread tool holder like the Shars shown here. Don't go hogging all the Dorian tools though, I'm not done buying :-)
JRoque250 I took a quick look at amazon and saw no bargains.. But I sure do intend to keep looking. Dorian & aloris are my favorites. I do intend to hog when the price is right. Thanks for the heads up
mrpete222 I also have a Sony Handycam. I will do some research and see if I can determine what's going on. The content of your videos is always great, and I'd love to get the video problem fixed.
I was interested to SEE the cut difference, but was appalled with the shaky out-of-focus close-up shots that have left me with a headache and not enlightened. What’s with the childish, "I don't want to show the name of the tool manufacturer"? Yet in your Tip #135, you didn’t hold back in doing a magnificent job of slandering Butterfields Farms Premium Chunk White Chicken in a can on camera!
Mr. P.
From this video and others you've uploaded, it's OBVIOUS you remain a VERY fine teacher. Those working in the schools now could learn quite a bit watching you.
As far Bessemer process steel goes, basic oxygen process is a close as you get these days. However, blowing air leaves some nitrogen in the steel and that leads to precipitation hardness.
Eli D.
Thanks you
mrpete you are the only person on YT who knows how to tap a hole properly. Great video as usual, very informative, the newbies will surley benefit from your excellent engineering tutorials.
Thanks
@@mrpete222
The best teacher! I was lucky enough to work at a major manufacturing facility that had in the toolroom a Rigid ™ pipe threader that had the full accompaniment of dies for both sae and metric allthread. If I'm not mistaken there was even a die for a large left hand fine size. Thinking might have been ¾.
MrPete, You're wrong about the tapping effort not showing up on the video. As a person who has done a lot of tapping I can see the difference in your hands between the two materials. Thanks for another informative video.
5tt
I
Interesting and informative as ever. You could sure hear the change in the machine load when you were milling the two materials.
THANK YOU I have been using my die wrench up side down.
Thank you Again Mr. Pete ! I just learned something After All these years of using a threading die , after watching this video I learned I was using the die handle upside down ! Makes more sense putting the adjustable collet on the un-threaded portin of the stock to hold it straight !
I am absolutely appalled.
At myself.
These two #176 videos are gold!
They answer many questions I've found as new low carbon fights back at machining it. Not always but when it does, it fights hard.
Working on governor parts for predecessors of your old Minneapolis Moline and will redirect my efforts.
Thank you!
😀
I tried the 12L14 and found it be very forgiving, especially when threading or parting. It isn't like butter but very close. Thanks much again!
Try these on mild steel. They are absolutely brilliant to use and leave a great finish. I’ve been struggling for years to get a good finish on mushy cold and hot rolled bar and these did the trick.
DCGT070204-AK H01/DCGT21.51-AK H01 CNC Aluminum Turning Blade Carbide Inserts
I love working with 12L14. It gives such a nice finish.
Great video. When I thread cold rolled steel on my lathe the threads are a bit rough so I do the last little bit with a die. This makes better looking threads but not all that nice. Thanks for sharing.
Thank you for an enlightening couple of tutorials. Facinating.
HI mrpete,
Just like you mention HSS is the way to go if you plan to do more than a few taps or fillets, and, on stainless the carbon tool will just dull mots of times on the first pass...... And, just break in the hole.
Even in aluminum cheap tools will stick and break.
Keep on the great teaching.
Thank you Mr. Pete once again!! I've found that HSS and carbide cutting tools on threading applications are like night and day, especially when threading hot roll or tool steel on small lathe. Yes, the cost can be higher but a bloodhound will find a good deal out there.
Rolando Escobar Thanks--so true.
Thanks Mr.Pete, very good experiment. I see this at work a lot machining forged steel vs. cheaper burn ring steel...I don't know the steel numbers off hand but they do machine differently, also on occasion machine into a hollow spot (inclusion??).
Your videos are helping me quite a bit as I learn the machining trade, thanks much!!
Also just paid for a Bridgeport series 1, j-head and in great shape for less than a grand with tooling, I live in Massachusetts where a lot of manufacturing was done and machine tools are plentiful and reasonably priced around here...Thanks again Mr.Pete keep up the great videos !
Mr Pete, I have used scrounged mystery metal for years and had some very wild results. One chunk produced the most bizarre iridescent purple chips I have ever seen. Another prime piece of aluminum rod 2 inches in diameter by 3 feet long turned out to be the nastiest stuff I have ever worked with as it would only tear and not machine well no matter what I tried. It wouldn't even file smooth. I totally relate to your attempt to demonstrate this concept and I suspect you had such similar results between widely different alloys because of the new modern carbide bits with their computer generated profiles that cut so well in any material. If you had used HSS bigts I bet you would have had the dramatic demonstration you were looking for. Thanks so much for all you do!
So true
Excellent video Mr. Pete, that's a good demonstration with some good info. Thanks for sharing!
Thanks Mr. Pete for these two very informative videos!
You are welcome
One thing I noticed in machining as well as tapping was the difference in how the different metals sound when being cut.
Thanks Mr. Pete, for another informative video. I look forward to all your new videos. I can't help to wonder why the steel companies didn't standardize their color codes. God bless and thanks again.
ANOTHER GREAT VIDEO...make sure use vice that is secured to the drill press table when drilling. If drill grabs the work piece you may break a finger or two if you are lucky, otherwise keep the phone number of near by emergency hand surgery center handy...
The lead particles in the matrix of the 12L14 act as miniature chip breakers at any cutting speed. At higher speeds and pressures where temperatures are much higher, the lead also lubricates the passage of the chip across the cutting edge.
THat was terrific !
Thanks Mr. Pete! My takeaway was that the threading insert you used was so good that it evened out the differences in machineability between the materials. You could really tell the difference when you used the die method. Perhaps a Part 3 would be in order, using a ground HSS tool?
I was thinking that when I made the video. IT EVENED OUT THE DIFFERENCE--I could not think of how to word it. Thanks
mrpete222 One of the major goals of the guys who developed the inserts is to get good machining with minimal lubrication, on a wide variety of materials...
And, yes, I need to look things up in the books before I try to get too far into a project - the variety of choices is staggering...
Awesome video Mr. Pete! Thanks a bunch. JH
Mr. Pete, A great series. where I work now we machine 6061 t6 aluminium almost exclusively. I often make the comment to new guys that come in and only experience 6061 that if I had to go back to a job shop that does many different materials I would have to relearn machining. Easily half of the difficulty of machining steels is figuring out the proper speeds and feeds for the many different alloys. Regards
Thanks for watching
6061 T6 is my first choice unless i need the strength of steel. just be carefull when drilling or taping and remove them often. if you break a drill bit or a tap off in a piece of aluminum, you will have to throw it away and start over. most projects can be done with aluminum.
Thank You !!! for Another great lesson on machining
Thank-you very much for this one too!
Mike.
Very interesting, thanks for another great video, proper job.
Great video!!! Always learn something from you. Thanks!!!!!
Learned a lot! Thanks for the videos as always.
Thanks for the Video MR Pete, Keep them Coming
Will do
Hot Roll vs Cold Roll.
When machining steel that need close tolerances consider that Cold Roll steal will have lots of internal stress that will cause warping when machines. Hot Roll steal will not have the high internal streses and will be less prone to warping after machining. Some of the internal stresses of Cold roll steal can be reduced by heat treating. Raising and holding the temperature near 1000F. Machinablity of steel can also be improved by normalization by heating the steel above its critical temperature (usually about 1600F).
Yes--saw down the length of a piece 3/4 sq CR and see how straight it is.
Thought that tap was gonna break in the Cold Rolled.
Thank you for the video.
Here from the first machinability video, also very useful. (I think it’s ok to tell people brand names though: Given all your experience, if you like the threading tool a lot, we’d love to know what one it was! :-)
Seeing you cut through the different materials is a testament to how well setup your lathe is, Tubalcain. I was machining a piece of S7 the other day and it gave me grief, especially in the cut-off operation.
I get my materials info from here: www.azom.com/materials.aspx
Thanks--will check it out
Thank you Lyle...best wishes.....PB
It’s very interesting to see the comparison of the difference in machining the different steels. I did not hear you mention any advantage over one another in the use. As in the strength of the threads from pulling between the steels??
another great video thanks for the effort
Tubalcain, I don't know how old the steels were in this video, but do you think improvements in steel or the carbide tip technology is responsible for the surprising results? Clearly the tapping segment tells the story most vividly. I'd really like to see an adendum to this with some ground HSS lathe tools. Great stuff, Sir! Thanks again!
Educational as always! Would you show the spark test?
Ha! I spotted the trade name, hehe, I won't say either, lol.
Not all experiments need to be scientific. Sometimes it's worthwhile just to have a look.
MR. PETE,
YOUR DEMONSTRATION MAY NOT HAVE BEEN SCIENTIFIC, BUT IT WAS VERY ENLIGHTENING. GREAT JOB OF EXPLAINING THE DIFFERENCES IN STEEL.
Spoiler Alert! The threading tool was a Shars brand. Whats so bad about that? Seems to do a nice job.
616Haggard Thanks for watching
Thanks Mr. Pete. Another good series and like that this one deals with problems a lot of us have in threading different materials...especially if you have funky dies. The threading bit was impressive and wonder if it could thread the tool steel as well as it did the CRS and 12L14? I do have a couple of questions that may erupt into firestorm about Hex Dies versus Round Dies. I even went back and watched your MST 4,5 & 6 to see if you answered my question....but it wasn't clear. I noticed you used hex to cut your threads but was told that hex dies were for chasing or repair, not cutting and they don't conform to common 2A specs. 1. Are there hex dies for cutting and if so how can you tell the difference between them and chasing/cleanup dies? 2. What brand of cutting dies do you recommend? Thanks Much...PJ
I use whatever I have on hand. Some of the hex dies seem cheap.. Most all of the small dies are carbon steel. You can get HSS dies only from industrial suppliers & they cost a lot. The carbon steel ones dull fast.. Cleveland brand was best--if they still make them.
mrpete222
Thanks I'll be on the lookout for them...I know they still make drills. I have a few older Vermont hex dies that are pretty good but my 1" round import sets are carbon and a few of them I would be better off using rock and chisel. Even the Craftsman are imports now...what ever happened to Sears & Moore Drop Forging? To me these are tools that require the best I can afford...much better than messing up a part or pulling my hair out. Saving my Shekels. Thanks Again for all you bring!
The complete sets in a nice plastic box from sears etc. look great. But they are carbon steel. Unless a tool is marked HSS, you can be sure it is inferior.
Which type of metal would have the strongest threads?
We can see the extra effort in the way your bulging muscles are rippling.
Mr Pete - your the best - thank you
If not HSS dies, what are the options?
Hey, have you thought of using a time lapse camera? I think that with one of those, you can show a lot more in detail without making the video any longer and yoy can still explain concisely with subtitles of what's going on?
But you may need someone to integrate the time lapse and normal film.
I bet if there's a skill center nearby that has filmography classes. I'd bet a student or two may enjoy editing and splicing or whatever its called. Just a thought.
I had thought about that, but do not know how.
mrpete222
Well if RUclips has done anything, it has taught a lot. I'm sure if you Google how to use a time lapse camera. It'll show up. If i come across an instructional video, I'll try to send you the link.
On another note, ever thought of hooking a shopvac to your lathe to reduce the mess?
I just have this idea of taking a large cereal bowl, cutting out the middle just enough to fit the hose. It would have to be a bowl without a flat bottom though. Just a thought I'm throwing around. Would also love to see you make one and adapt it to your lathe.
It show's. You can see in your arms.
love your videos ;) Peter
Peter H Thanks for watching
Please share the threading tool. I am looking to get some carbide pre sharpened threading tools and that one looks like a dandy. If you don't want to do it in the comments you can send me a private message.
From Shars, on line. Holder is SER 0500 F16 , Insert is 424-1381
Thank you sir!
mrpete222 I have a similar threading tool from Kennemetal. It looks like the inserts are identical, and it cuts threads beautifully. Great video sir.
I have no experience with Shars thread cutters, etc but Amazon is running a sale on US made (in Texas) Dorian Tool holders, etc that are at times cheaper than the China stuff. Prices vary, as I've noticed, by the hour even but search for Dorian Tool and you'll see some of their stuff marked down by as much as 78%. I've bought a few hundred dollars worth of their stuff already and still going. I paid $23 shipped for a Dorian thread tool holder like the Shars shown here.
Don't go hogging all the Dorian tools though, I'm not done buying :-)
JRoque250 I took a quick look at amazon and saw no bargains.. But I sure do intend to keep looking. Dorian & aloris are my favorites. I do intend to hog when the price is right. Thanks for the heads up
Wonderful...:-)
Thanks
How much material are you removing per pass during your threading operations?
.006 to .008
Are you from the town where Jimmy Stewart grew up?
Many many viewers have said something similar, lol
Professor,
Great job on both parts of this video!
A+
Thanks
leadloys used alot on screw machines onr i hated was 4340...crommoly was easier
why do you call the 12L screw steel?
It's the stock used in screw machines... to make screws! :)
Why do you refuse to fix the video motion artifacts?
How
Seriously? You're more worried about video artifacts than learning the information and content he is teaching?!?
mrpete222 What camera and settings are you using?
Sony Handycam. I know nothing about the settings. I use it as it came out of the box.
mrpete222 I also have a Sony Handycam. I will do some research and see if I can determine what's going on. The content of your videos is always great, and I'd love to get the video problem fixed.
Was that a shah tool? Made in india? Im disappointed tubalcain!!
Let me thread them, I'll show you how bad it can look...haha! Nice comparison, thanks!
I was interested to SEE the cut difference, but was appalled with the shaky out-of-focus close-up shots that have left me with a headache and not enlightened.
What’s with the childish, "I don't want to show the name of the tool manufacturer"?
Yet in your Tip #135, you didn’t hold back in doing a magnificent job of slandering Butterfields Farms Premium Chunk White Chicken in a can on camera!
I gather someone pooped in your Cheerios?