How to drill harden steel
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- Опубліковано 2 тра 2024
- How to drill harden steel
Drilling Through Hardened Steel
In this video I will show you how to sharpen a masonry - concrete - hammer drill bits to cut harden steel
I will demonstrate drilling into hardened steel with a cheap carbide drill bit
this works well for drilling into knives or knife making
it is preferred to use a mill or at least a drill press but it can be done with a hand drill but I do not recommend it
In this video I share a quick tip on using a Masonry Drill bit to drill through a hardened Steel
easy and cheap way to drill holes into hardened steel
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Thank you for explaining this. Bed frame angle iron was eating all my drills.
I’m glad that you like the video. Thank you for commenting and thank you for taking the time to comment. It is much appreciated.
If anyone want's to try this, it's much cheaper to get a diamond circular saw blade.
It will be a bit coarse but will work to grind carbide into shape.
I've been using masonry drills to drill through broken taps and hardened carbon steel since the late 1970's, well before solid carbide drill bits were easily available (or affordable)
I do the same, even made a blade sharpener out of a old tile cutter as the speed is only 180 rpm
Same, worked for Caterpillar my job was removing broke taps bolts and studs.
@@bernardkinsky1637 Neat, probably works much better than mounting a circular saw upside down and spinning at high rpm
Ray, once again a very informative post, thanks!
Thanks for the easy to understand explanation. That makes perfect sense to me. 👍🏻👍🏻
thank you for your nice comment and thank you for taking the time to comment. It’s much appreciated.
Ray.
I used these masonry bits to drill holes into bearing races. Works like a charm.
Great video, very simple and easy to follow and i liked how your focus was on both cheap & easy to acquire drill bits as well as the tools needed to sharpen them. Almost every hobbyist has a either a bench grinder or disc grinder.
Had never considered using the diamond tile discs for sharpening masonry bits to tackle drilling tool steel. If you broke a tap and needed it out, 3$ sounds like the bargain of the century for cutting it out.
Thank you for the nice comment and thank you for taking the time to comment. It’s much appreciated.
Ray
Retired GM shoprat. Worked near a ring gear tapping machine. Broken, in hole taps were "set aside", and later "arced?" zapped? and ??? re-tapped. This was in the Lansing, Michigan "Forge-Plant" #2 rear axle assembly of 1969+ era. This process was utilized on Saturdays=overtime. As it was 'Splained to me..... "too much time and machining was invested to NOT attempt a repair.
Impressed. Would be fun to drill some junk - discarded- no longer used safes. :)
Thanks fo sharing
Great video, thanks for sharing
Thank you for your nice comment and thank you for taking the time to comment. It’s much appreciated.
Ray
Great video Ray
Thank you for the nice comment and thank you for taking time to comment. It is much appreciated.
Brilliant! 👍
Thank you and thank you for taking the time to comment. It’s much appreciated.
Ray
very nice education my friend , thank you so much.
I’m glad that you enjoyed the video
And thank you for taking the time to comment. It is much appreciated.
Ray
what is the technical name for those diamond dressing sticks? when i do a search for diamond dressing stick i get all kinds of results. what is the material in the stick called? Thanks! I'll be dressing a Norton surface grinding type diamond wheel
Would a cutting fluid of some type have made a difference in the breakage ? I am assuming that the bits get hot and that’s contributing to breakage , but just curious if in fact the heat does play a part and if you have used cutting fluid in the past .
Yes, cutting fluid would help all the demos that I’ve done in my three hardness , drilling videos were worst. Case scenarios just demonstrate the ability of hand, sharpening Concrete bits
If you have the ability to use coolant and air at the same time, that would be probably the best situation for most steals if it is an extremely hard steel, and you can increase the rigidity and use oil, if the temperature is not excessive, that would also be a really good situation
I hope this helps
Ray
@@shopandmath Had a former Alanson, Michigan friend who made fixtures for testing wiring harnesses. Their materials were "plastic-non conductive". Elmer LaTocha taught me to "PECK DRILL"= CUT AND REMOVE BIT, SPINNINIG TO AIR COOLTHE BIT, THEN "PECK IT SLIGHTLY DEEPER, AND REPEAT. Cuss-ed as I am I needed to "see what NOT, following this method DID! THE HEAT OF FRICTION DRILLING YIELDS A LARGER HOLE IN THE "PLASTICS' " MATERIAL. We as a society "grow in knowledge by "Paying IT Forward".
Very interesting information, thank you.
Thank you for your nice comment and thank you for taking the time to comment. It’s much appreciated.
Ray
iused to do this in the late 70s but forgot about it, thanks
You’re correct this trick is not new but it’s a good cost-effective way of producing holes and harder material
Now, you can buy bits from Bosch and Dewalt without having to sharpen them
Really good work man.
Thank you for commenting and thank you for taking the time to comment. It is much appreciated.
Ray
I'm curious about the runout in the diamond grinding wheel on startup. Seems to present itself again during the dressing operation and also in the 8x footage you see it a bit as the drills is sharpened.
It’s a visual illusion.
It has to do with the bit rate of the video so when it speeds up and slows down it looks like it’s a wobbling
Is it possible to just buy a cobalt drill bit for metal if I can't make it?
yes, it is possible to go to cobalt drill. They can be a little bit. Pricey, there are a few other brands that make carbide tip drills that drill freely. Milwaukee and Dewalt Bosch makes a set.
Hey this video is cool. Would you have any tips or ideas on best ways to drill out or remove. A broken piece of Easy out bolt extractor tool if possible Thanks 🙏
I would use the same technique that I used in one of my previous videos on how to remove remove a tap by using a guide plate
ua-cam.com/video/rSShHH2Us5Q/v-deo.htmlsi=l5ookITZoDb7UuJn
Best of luck let me know how it goes
Ray
I have 2 stainless steel 1/4" bolts broke in a lower unit on a boat. Drilled through both bolts with a cobalt bit but then I broke a ease out in one of the bolts. So i got 2 more cobalt bits and 2 dremel cutters for hardened steel. Wish I'd known of this trick 1st. Now to destroy the bits and more than likely the dremel cutting tips.
I love this type of challenge
If you use a guide plate, you can drill the hole so precise that you can use the same quarter 20 taped hole
if you use a guide plate, you can drill the hole so precise that you can use the same quarter 20 tap hole
Let me know how this project goes
Ray
@@shopandmath I got them out with the dremel last night. Had to drill out hole to 5/16 but it's all good. It took forever to cut that ease out out. I can't believe 1 dremel bit done it though. Now to re-thread it tonight and then put back together and get back on the water.
Thanks mate!
thank you for the nice comment and thank you for taking the time to comment. It was much appreciated.
Ray
nice bro
Some useful video ideas are how to dial in a micrometer or how to grind drills
I graduated the course and struggled with these 2 topics. Great video tho!!!
I have videos on both of those topics.
In the how to read a micrometer, it shows taking a micrometre apart and what you have to do to adjust it to dial it in or reset
The drill making video is older one of the first videos that I created.
Good hearing from you Sawaab
Have you seen the new campus?
iF YOU would of used a vacuum cleaner nozzle chances are you would only need one drill. I have found that the chip load is what trashes the carbide tipped masonry bit. Also, different brand name bits have different grade carbide which one is better than the other. Just speaking from experience Sir.
You’re right on all accounts the thing that would improve the cut ability or quality of cut would be rigidity
This video in my other three videos on the same topic or design to show people that they can make these tool bits and cut harden material with very little cost involved and not that much experience
If you watched any of my other videos especially the shop tour video, I have access to millions of dollars of equipment but all my friends that are not in the trade so I need to make videos for the people that don’t have all of the high-end equipment this was kind of my Answer to those types of scenarios
Thank you very much for commenting and sharing. It is much appreciated.
Ray
@@shopandmath I will definitely check out the other videos. So nice to meet another machinist Ray like myself Vic. I can relate to your methodology and logic. I have helped so many people who also do not have access to high dollar machine shop. I have one for you Sir. You can take a HSS drill bit and harden it to drill right through just about anything by heat treating it in Mercury. The bitch is you will go through at least a dozen or more bits before one will survive the plunge and temperature shock. Thank you Ray you made my day fella. Good luck and peace to you Sir. Vic
P S carbide cement drills bits these days are really the bottom of the barrel in quality. They use to be really good when they were made in the USA. Years ago Ray. Over and out.
@@victoryfirst2878
Hi Vic
I’ve never done any heat treating with mercury we have a heat treating oven and it is only used in the tool and die apprenticeship and maybe a few other classes
One of the videos I was contemplating making, was taking a piece of heat, treatable metal cutting it in half making a turning tool out of 1/2 and machining the other piece non-heat treated piece into a shape to demonstrate the physical change of hardness on the same piece of metal
Again, thank you for commenting. It is much appreciated. Have a nice day.
Ray
@@shopandmath Good luck with your endeavors Sir.
Thank you.
you’re welcome and thank you for taking the time to Comment it’s much appreciated
Ray
Awesome pace and information density! I'm dealing with some kind of "undrillable" automotive unibody reinforcement sheet steel (around 14ga) which HSS does nothing. What's worse, they have to be hand drilled AND there are obstructions: will have to use either a compact right angle drill OR a 12" bit extension.
send metal has its own problems for drilling, especially where it wants to pull the drill in to the material after you break through the surface this causes the drill to slip inside of the chuck and damages shank
there are some tricks to prevent this from happening, such as reducing clearance or drilling with a negative rake
If the material is plated, or has a coding like titanium by trading, there are some bits available that will melt the metal, but I think that they’re only available with a Rigid set up and not compatible with hand drilling
Do you have any indication of what type carbide is used for the bits?
sorry, I don’t know what type of carbide or grade of carbide is in these drillbits
I was just trying to demonstrate how for very little cost at home and you can drill through very hard steel.
I would’ve brought the Anmol up to the hardness tester to find out the exact hardness one. Unfortunately, we just moved it and it’s still in lockdown mode or transportation mode.
I pick those Drill bits up from the restore, which is the cheapest place. I could find they only cost me a dollar each no tax Canadian.
If you watch the shop tour video you will see that I have access to millions of dollars worth of equipment and an excellent environment to machine almost anything
my friends keep telling me that I need to make videos that the average person with the most basic tools can still drill out a broken tap or Harden Bolt at home. Sorry I couldn’t answer your question.
Ray
Is the shank part of the end mill actually hardened though?
Yes, this end mill is through hardened
Why did you decide to use dry drilling? Wouldn't flood-cooling have helped avoid the breakages?
Coolant or oil would have been preferred
I was doing it on a drill press and didn’t want to make a mess
My parameters for this video
Number one
accessibility for everybody with limited tools (someone with a drill press, or hand drill and a grinder could make these drillbits for around $10)
Second
Pick material that everybody understood was extremely hard. Unfortunately, our hardness tester was in shipping mode from the move still
And I could not tell you the exact hardness of the material.
So I picked something that is easily recognized by everyone and they understand that it’s extremely hard.
Third
Demonstrate an easy and basic set up
I currently have three videos, including this one on drilling harden material.
Do you have any ideas for my next video?
Thank you for taking the time to comment. It’s much appreciated.
Ray
What's your suggestion to drill out harden steel bolts stuck in the frame of my Jeep?
For bolts, I would use a drill that has cobalt in it. Dewalt makes them and Milwaukee makes them unfortunately since it’s in the frame, you will have to use a hand drill
If you have a good drill sharpening skills, you should be able to do it with one drill no problem if you have difficulty sharpening drills and don’t have access to someone who does I would suggest getting more than one
I would also suggest drilling out the centre of the bolt, and using an easy out to remove the rest of the bolt
If the bolt still has a head on it, there are multiple ways of removing that using extractors which do not require drilling.
Wish you all the best let me know how it goes.
To stop the drill from wondering if you can put a Centre punch Mark in the bolt .
@shop and math , yeah...not only in the frame..but on the underside in the rear wheel well. In a very hard to reach spot of course. Thanks for the tips.
@@rmerrick123
A couple more ideas that you might want to consider
I don’t know if it’s possible to get an easy out or stud remover into the position that you’re trying to get at
I have used a Dremel type tool that has a 90° head to get into super tight spaces, then modified and easy out basically made it shorter to fit inside the tight space use an air chisel to place the easy out inside the hole
And removed it with a ratchet wrench
Best of luck let me know how it goes
Ray
When you can figure out how the average machinist can enlarge the so called clearance holes in 123 blocks (other than edm) you’ll become a world wide hero.
Thank you for commenting
Ray
What about a diamond coated drill bit?
It depends
They generally only do diamond coating real diamond coating on carbide. The diamond coating is a throwback from about 15 years ago. It’s a technology that they used on the space shuttle to deflect heat.
On high-speed, steel or cobalt it wouldn’t do anything
Think of coatings Like a chocolate covered cake those small Vashon cakes or Joe Louis the coating on the outside is hard very hard and the material behind. It is soft like a cake.
The backing material must be very hard and tough to hold onto the coding on the outside to prevent it from flaking and cracking off
I’m hoping that I explain this well articulated enough that you can understand what I’m trying to get at
Ray
Subscribed
Thank you
Can you please do a “how to use a pitch micrometer”?
Yes, a pitch micrometre video is in the works but it’ll be a little while yet.
Thank you for taking the time to comment. Much appreciate it.
3 bucks and a lot of time! Thanks
1St view, comment and like
Thank you for taking the time to comment
Ray
You should also use cutting oil .
0:52 Stellite is not basically high speed steel. It doesn't even have iron/steel in it. Its tungsten carbide "glued" in a matrix with cobalt.
You are correct.
I am guilty of dumbing down my comparison
I was just trying to convey a comparison of metal that people would be able to understand
Thank you for taking the time to watch the video and comment. It is much appreciated.
Ray
I use a diamond hand file I purchased from Amazon to hand sharpen the masonry bits to drill holes in hardened steel. Also use a guide to keep the bit centered when starting the hole as a prick punch obviously doesn’t do its job.
I never thought of using a file.
Thank you for sharing. Much appreciated.
Ray
HSS Centre drills and spotting drills are also useless.
I have had good results using the diamond file on a Leatherman to touch up the edges on carbide tips - I've carried one on my belt for 35 years. If you need to reshape the carbide, the diamond grinding wheel wins.
@@russelldold4827 learn something new today I didn’t know that the Leatherman came with a diamond file. I will have to see if mine has one
Thank you for sharing
Ray
I have drilled many holes into harden steal using cheap masonry drills. [0-1] Rockwell Range of C65.
The end mill you drilled was "High Speed Steel End Mill Hardness" = Rockwell Range of C66~68.
* I only used very short masonry drills.
* I only slightly touched the "front face" at (90'), not removing any of the "brazing" holding the carbide insert.
* I only slightly touched the "top face" to make a sharp cutting edge. [Not Sharp]..
* You sharpened your masonry drill using (drilling non-harden tool steel) spade drill theory.
Drilling Hardened Steel With Masonry Bits
ua-cam.com/video/dWEN_MxhGqQ/v-deo.html
* Video: [2:17/9:57] Spade Drill used to drill "soft steel".
How to drill harden steel
ua-cam.com/video/kX8Te5ch1Z0/v-deo.html
* Video: [8:35/9:59] Shows a shattered insert.
* Video: [8:55/9:59] Shows drill chips coming out of the E/M center drilled hole. Drilling into a "partial hole" !!!.
VERY Dangerous Procedure:
* Video: [8:03/9:59] Shows using a "Very Long" masonry drill only having a 'soft cold roll steel drill shank'.
* Under extreme drill pressure, what will happen if the E/M rotates in the very small "V-Jaws" in the vice ?
Porque al taladrar, usted no usa lubricante para enfriar la broca
Sorry, translation isn’t quite working. I think you’re asking about lubrication
Depending on the temperatures and if the metal you’re cutting is work hardening. Then you will absolutely need lubrication mostly for cooling so coolant instead of an oil because this is a hand operation doing it in a drill press or a hand drill you generally don’t need oil. Hopefully this helps.
Ray
can i buy a diamond drill ?
Years ago when I was in the industry, we did some military contract work and they had a diamond end mill it was used to machine Laser optical equipment for smart bombs
Honestly, I’ve never heard of a diamond drill. It is possible that they exist.
And could easily be made with some type of diamond insert, but I’ve never heard of it
Thank you for your suggestion and thank you for taking the time to comment. It is much appreciated.
Ray
this is the reason why machining time increases
heat due to shear and friction wears out the bit
Stellite, is Stellite, NOT HSS, NOT STEEL IN ANY WAY.
You are 100%, correct?
I was just trying to do a simple comparison on material compared to other materials
And could’ve done a better job doing so
thank you for taking the time to comment. It is much appreciated.
Ray
Has anyone told you that you sound like ed kemper…..
How to drill HARDENED steel.
The exact name of the videos is chosen by the algorithm, including the spelling to get the most views
Seems a little bit crazy but it also works
@@shopandmath , I was speaking about the opening graphic. It also mentioned "Harden Steel." No biggie. Just a misspelling. Great information to keep people from burning up drill bits and work hardening their project material.
put some cutting oil on it
Video started great, was right on point, and I was looking forward to enjoying the whole thing - but then you did what every other machinist does and assumed that we're all as smart as you are, or that we understand all the same verbiage. We aren't and we don't. Just over 2 minutes in you glossed over that little subject that obviously everyone knows about like it was nothing - angles of cutting bits/drill bits. You literally just said something like 'this one is positive and this is negative and neutral.....' and then you even rotated your wrist like that cracked the case. Huh? What part was the positive or negative part/ What angle? The side - bottom - top - like absolutely no explanation of what is meant by this. The tip of the bit? The flutes - like the inside or outside of them or both? Any explanation would be awesome because I have no idea what this means but everyone makes it sound important
You are correct they probably didn’t explain the positive negative or neutral angles, very well. If I have time this fall, I will make a video explaining angles on cutting tools
Ray
Some of the problems with broken drills may be caused by the width of the point between the cutting edges (the web). Carbide depends on heat from cutting speed to soften the steel. The point of the drill turns too slowly to generate the needed heat. It's almost like forcing a stationary drill through the material. I'd be interested to see if thinning the point would help. Also, on the interrupted cut where you went through the center hole you would need more speed. Interrupted cuts cause thermal fracturing in carbide.
If you get brazed carbide masonry drill bits too hot, the carbide 'falls out'
HARDENED not harden
Word. I was like, how the hell do you harden steel with a drill bit?
Cool video though 👍🏼
Hard-on
It's "hardenED". And english is not even my native language.
Thank you for the spelling correction
The program tube buddy
Does the video name selection for the best algorithm
😅 at first i was thinking nit picking until i realized he was referencing the title.
Hardened steel not harden steel.
You are correct, but the UA-cam algorithm works at the other way better
Can’t fight the algorithm
@@shopandmath I hear you but perpetuating improper terminology is bad no matter what.
C'MON MAN first DRILL BIT
made in USA 👍🏻
Cobalt bit is made where ????
???????????????????????????????????????? this started WRONG
Small detail: there is no such thing as ḧarden" steel, there is, however, something called hardened steel- n'est-ce pas?
If that’s the only mistake you’re found in the video. I’m doing pretty good thank you for watching. And thank you for taking the time to comment. It is much appreciated and you are correct the small things do matter I try to produce high quality videos with accurate and good content
There is always room for improvement
Your comments are appreciated because all of my videos are shot in a one and done format. These comments help clear up any mistakes that I have made or any clarification and Short, yours and everybody else’s comments help to the clarifying, educate others. Thank you. Ray