How to Drill Hardened Steel - Knifemaking Top Tips
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- Опубліковано 17 тра 2024
- Ben shows you the best method for drilling holes in your blades after heat treat. If this happens (for example you drilled the wrong hole and heat treated / hardened you blade) this is the technique to solve it.
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so.... like I got my hole drilled. Broke like 6 bits (several were old and I needed a reason to buy a new set so not a huge loss). This would have been gold to know. That is going to make my life much easier in the future. Thank you sir to the legendary tier shop tip.
Cobalt failed and this went through like I was drilling wood! Great tip!!
Just what I needed. Brought a knife blank pre hardened and need to enlarge one of the holes for a larger mosaic pin. Great tip thanks 👍
I have been using these Bosch masonry drill bits for years. They are brilliant for drilling through tiles. Even the hardest tiles... you only get about 6 holes per drill bit, but still I would recommend
I am surprised that most of the video on drilling into hardened steel didn't mention using cutting oil. I am drilling into a couple of lengths of hardened steel rods used in mining exploration drilling. It was hard work. By applying cutting oil regularly, it seemed to generate less heat. I can't prove it scientifically, but I venture to say that cutting oil is helpful.
Great tip Ben! Keep em coming mate!
Yes sir! RPM are important! Thanks for the tip! Nice quick video
I've got this really nice looking hardened stainless steel kitchen knife blade that I've had for year and haven't been able to nothin with and honestly this video has been a great help I've now been able to drill some hole though it just gotta but a nice handle on it
Thar was really helpful - thanks a lot! I was able to able to widen a 1/4“ hole to 8mm with a regular drill press using this drill bit after your recommendation. Very helpful! 🙋🏻♀️Anna
Perfect that’s great news.
So pleased it helped.
cheers Ben
I use these bosch bits all the time... very good..🤟🤟
Fantastic. I bought a Chef's knife 30 years ago at the Mount Nelson Hotel in cape town. The knife was a British one. It had the name IMPACT lasered on. Nice knife and it was ice hardened.
And I like hanging my kitchen knives on nails so they can be easily accessible and drip dry.
So twenty drill bits and years of frustration later
Thank you. I have even destroyed a few carbide bits and do have a hole.
But you have now saved a few people from my predicament
I still use the knife.
Knife model number? Manufacturer? Company name? I'd like to purchase one if possible
@@northwestrockgem9745 that's all i have. I have tried to Google it to no avail
I like Presto Cobalt bits. They work really well.
Great tip thanks for the vid
Nice! Hopefully we get them in the States!
Great Info,thanks!
You bloody genius!!!!!
ohh,,, I've never made that mistake,,,,haha. Wish I hadn't. Great tip Ben!
Tnx for the tipp ! Great
Where do you buy the milling machine?
I have a slab of 440c steel but its hardened I have no idea if I can drill a hole in it? I have a bench drill but nothing as fancy or industrial as yours. Its a hobby drill. Do you think I will be able to drill holes in this slab somehow? normal metal bits start bending when I pushed down on the pillar drill.
I am a safe and vault technician. I drill into hardened steel every day opening safes. It’s much easier to drill a new hole in hardened steel than to enlarge a hole in hardened steel. The Bosch bits great for enlarging hole but not new holes. The tips have a wide face. Strong Arm and Mr. Twister bits have a pointed tip. Pro lok bits as well. Speed needs to be slower for new holes and faster for enlargement. Not drilling fluid needed with thin hardened steel. I’m usually drilling 3/8 to 1/2 hardened plate. Yesterday I drilled 3/8 hardened plate 1/4 pro lok bit. I minute penetration with hand drilling rig. Diebold cash guard TL-30 rating Check out the bits for your self. Remember slow speed 400 rpm and listen for the bit starting to eat and adjust pressure and hold constant pressure. It will sail through the material. The pressure you need on the drill bit is approximately 800lbs to 1000lbs. I do this by hand for pressure control and not to break through the other side of the plate.
Thanks for the info. Sounds a interesting job you have. Thanks for the time commenting. cheers Ben
If you wanted to countersink and drill a 1/4” hole in 1/2” plate, would you put the 1/4” hole in first or would you use a larger drill say 1/2” to start a hole then finish with a smaller 1/4” bit?
@@ehRalph I would use the 1/2 first to the desired depth the use the 1/4. Never needed to counter sink in hardened steel but this might be the best way. Unless someone has a better way of doing it.
@@jonbottoms8988 thanks. Not ready to drill it yet but planning is getting closer Thanks again!!
Thanks for that, exactly what I trying to do, drill a 6mm hole in my harden knife that I am making.
THANK YOU !!!!!!
How would I drill 5160 with a handle drill
Also what type of drill bit would I need
We have to drill hardened steel for digger shovels and stuff like that. Once a drill is done, it's done, regular spiral drill bits can be regrinded (or reground) drill bits for hardened steel can't. It is really important to keep it cool, well lubricated and go slow. I always think of the pointer sisters, when doing this boring boring. Hardened steel wants a slow hand with an easy touch.
Super! Thanks! 😁
Had this problem with a bad start hole for EDM wire, was so crooked the wire would short no matter what, now we get to drill the hole through.
Bro great video. my HSS drill bit cannot slice on stainless steel for the speargun shaft. is there a carbide drill bit that is about 2mm?
They do make carbide drill bits that small. Most electrical repair places sell them for drilling mother boards. Lots of glass fiber in that stuff and it wears out bits. They are usually cheap too from these places. Just have a look on google, no particular brand.
there is also an other brand called "Alpen" there you get Diameters from 3 - 22mm, the bigger ones you get also with Sds bits, I use them for stonedrilling without hammerdrill, I like them because you can drill in tiles, concret with metall, metall, steel, stone, marble, granite etc.
You cannot use them for tempered steel.
I need 2mm where can I buy it?
Will this work if you need to start a completely new whole in hardened steel (centre punched) and if not is there something else you could please recommend? Thanks Ben.k x
I have same question. I think not. Been trying to use electric hand drill and almost zero result with standard, rather old, bits. I think only around 1300rpm not over 2000 as in this case. So probably wont invest and try. Although they do seem good general purpose bits.
I make the mistake of not clamping my blade when drilling, blade whipped around and sliced my finger open
And it didn't even need any cutting/tapping oil, paste, lubricant, spray, anti drilling chatter, anti dulling, anti squealing, anti breaking, anti binding and breaking your hand if your using a bigger flex volt beam and joist drill! Lol I love my dewalt version of the "hole hawg" haha I would recommend it to anyone that wants more power for those glue laminate beam holes for fastening lag screws or running romex, pipe etc through the studs, or even solid hardwood beams! I've personally drilled through a hardwood 12 inch beam with my "irwin speedbor 2000" installer 3/8" diameter AND MY VERMONT AMERICAN/LENOX SHIP AUGER BIT
Does anyone know in Vickers or HRC how hard that blade handle was?
Sure this was hardened O1 steel so about 60rc so not as hard as some of the stainless steel I use but I drill them the same and they can be up to 64rc
Hope that helps
cheers Ben
A little bit of oil will keep the drill bit cooler and maybe last longer
Can it drill a new hole?
Yes that's possible but it will be more difficult. Just like a non-split point drill it doesn't actually cut in the center so that matterial will have to be rubbed and pushed through to push it to the cutting edge.
I agree gloves and rotating tools a bad combination. You can get tear seam ones but I'd not trpist them.
Put your suds on, that will solve your hot metal, looking at the swarf coming off i'd say that's not very hard.
Very nervous to see you drilling through the knife without clamping it down or at least taping up the blade. I’ve heard of people getting their fingers sliced off from the drill getting snagged going through 😳
Thanks for the concern but having that bolt in the 123 block prevents the fear of the blade spinning, but as I said if you prefer to clamp it then that’s a good idea 👍
No oil, no water? That drill bit was crying, I reckon.
&y
You call that a knife