Toolgrinding: Micro trepanning tool

Рет қаралды 40,862

Жыл бұрын

"Drilling Large Holes in Cast Iron with a Trepan Tool!"
• Drilling Large Holes i...
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Пікірлер: 166

@Chris-bg8mk Жыл бұрын

"4mm carbide end mill that is no longer useful. I make those myself". Yep, Stefan, I make those myself too, in lots of different sizes! ;-)

@wwjjcc418 Жыл бұрын

Many of us do the same, following the immortal pioneering work of This Old Tony.

@mpetersen6 Жыл бұрын

@@wwjjcc418 If it's just one corner that gets crunched it's an instant boring tool 😁

@oldfarthacks Жыл бұрын

I will have to look into that as a manufacturing process, having never, ever made one myself. I have also never let the magic smoke out of any electronic system. .... Ok, I'm safe, no lighting. 😁

@robertburns2415 Жыл бұрын

You got so close I had to stop the video and get my safety glasses. Great cinematography.

@crichtonbruce4329 Жыл бұрын

Stefan: "I'm using a broken end mill... I made that myself" I almost spit my tea out. Thanks again!

@oldfarthacks Жыл бұрын

That there is funny, no matter who you are.

@ROBRENZ Жыл бұрын

Very nice work Stefan! ATB, Robin

@StefanGotteswinter Жыл бұрын

Thank you, Robin!

@Blondihacks Жыл бұрын

Outstanding video! Your timing was excellent. I was just thinking about small scale trepanning and wondering about approaches to it. Your photography in this one was especially good, as well.

@oldfarthacks Жыл бұрын

Ah Quinn, you could have figured this one out by yourself, your are just that quick. Still, it's nice to watch a master at his trade and clearly this video is of a master.

@Engineerd3d Жыл бұрын

I always make sure I have time to sit down and watch one of your videos. They are worth every minute.

@MF175mp Жыл бұрын

"hogs off 0,1mm of material in 2 or 3 passes" 😂

@oldfarthacks Жыл бұрын

That there is indeed funny. It got a laugh from me. 😅

@bertblankenstein3738 Жыл бұрын

Ahh the production of the end mill blanks. I have only experimented with drill bits.

@oldfarthacks Жыл бұрын

There is a whole wide world of possible materials, drills and mills are just the start. Case in point, files, I have turned these into something useful

@davidsnyder2000 Жыл бұрын

I’m not a machinist, I don’t have the brain for it, but I find your teachings fascinating Stefan. I learn a lot when you “dummy it down” for everyone to understand how something complex you make seem simple. Much respect my friend 👍🙏🙂

@davidjames1007 Жыл бұрын

Thank you for sharing, I am just a hobby machinist, self taught. I build small model engines for fun on the weekends. Watching an expert trained machinist like yourself is really facinating.

@mattholden5 Жыл бұрын

Stefan, love the rubber band idea. Seems like a great way to maintain preload against such tiny tools. Thanks for sharing.

@GiovanniCarloIglina Жыл бұрын

3,8 mm been called a "large diameter" (even if in comparison) is beautifully in line with your work, Stefan! Awesome!

@ade63dug Жыл бұрын

Having recently got a D bit grinder . This certainly shows how tool design should be kept simple . Love the rubber band idea as well . Thanks Stefan . Cheers Ade.

@donteeple6124 Жыл бұрын

Stefan is the true Jedi Master of precision machinists. Yoda's BIG brother !!! Outstanding as usual, thanks for showing us inside YOUR world.

@davidchavez81 Жыл бұрын

I once was running a steep grooved spiral on the internal of a part on the lathe. It was howling away and I was ensured that the boring bar always made that noise. I wasn't satisfied with that answer so I inspected the cutter closely and found that the back side of the insert was indeed rubbing just enough to make a sound but not enough to ruin the parts. I ground the insert away on the back side of the cutter and to the senior machinists delight the boring bar was now silent!

@mpetersen6 Жыл бұрын

Sometimes the chatter and howling are a simple case of too much over reach for the boring bar. When I worked nights I came in one time to finish up a job in the Jig Bore. The guy in days was using a 3/4 (19mm) bar to try and bore a 4" (101mm) hole about 5" (127mm) deep. Once he got chatter he couldn't get rid of it. Swapped out to a stiffer set up. And no problems. To be fair it was on a weekend and the guy normally didn't do jig bore work. It's not just tool clearance. The stiffer the set-up the better.

@Joelsfilmer Жыл бұрын

3:25 Robo-Stefan has become one with the CAD software! The rumours about German engineers were true after all!

@vincei4252 Жыл бұрын

I've been mulling making a water cooler block for a power RF FET amplifier that I'm building. This looks like an excellent tool for cutting the heat pipes which the water will run by. I learn something new from everyone of your videos. As always, thank you Stephan!

@bathedincloudsofblood Жыл бұрын

the more machinists who are also involved in electronics i see on here, the more i want to get back into circuit design. two beautifully intersecting interests in my opinion

@Self_Evident Жыл бұрын

"I make those myself." :) I do something similar - I make my own 2-flute end mills. It's easy . Basically, you start with a 4-flute end mill...

@mftmachining Жыл бұрын

Erstklassige Arbeit, Stefan. Bei so feinen Arbeiten zieh ich immer den Hut. Klasse. Bei trepanning fällt mir immer der König der Trepanner; David Wilks ein. So schade das er raus ist, aus der Branche.

@StefanGotteswinter Жыл бұрын

Ja, seine Videos kenne ich, total irre was der machen konnte - Und dann auch noch in fürchterlichen Materialien. Schade, dass sein Geschäft wohl untergegangen ist.

@bkoholliston Жыл бұрын

This was a very informative video--just great! There was certainly a pucker factor when you did the first test cut under power feed--I said "wow" out loud watching it as it dove in. Can't wait to try this on my D-bit grinder.

@youpattube1 Жыл бұрын

Yes, it did make sense. A very interesting video. And thanks for the Debolt-Saunders referral.

@wktodd Жыл бұрын

Stefan ,I always learn something from you . Thanks for making these videos

@RickRolling-tc7vb Жыл бұрын

Very interesting Stefan, and a lovely surface finish for the scale. I guess another way would be to drill out the centre and insert a precision ground pin - assuming the parameters of the part allowed for it of course. Thanks, always something to learn here.

@bodgit1964 5 ай бұрын

Thank you. I was just about to start making a tool the way I always have and I thought I will just have a look.... You drawing at 5:20 or so gave me everything I needed. Thank you.

@outsidescrewball Жыл бұрын

Awesome video,discussion demonstration

@spehropefhany Жыл бұрын

Very inspirational. This year is the one I'll learn to grind lathe tools, at least.

@marceloiannini8199 Жыл бұрын

Very nice, as always! Cutting oil looks like olive oil. Cool tool grinder. Danke you!

@StefanGotteswinter Жыл бұрын

Its Jokisch Alpha93 cutting oil, but its actually plant based :)

@jonludwig8233 Жыл бұрын

Thanks for sharing Stefan. Your video and mixing skills are superb. It makes the content even more interesting when we can see in detail!

@heighRick Жыл бұрын

Thanks Stefan, helps a lot!

@RRINTHESHOP Жыл бұрын

Nice job Stefan. I also use CAD in this way for tool making, works great. Nice tool and works great.

@davidrule1335 Жыл бұрын

Alright! I'll watch tonight. Going to get pizza and beer!

@mpetersen6 Жыл бұрын

I've made my fair share of custom treppaning tools for cutting O-Ring grooves in faces and internal diameters. HSS though

@acorneau Жыл бұрын

I would love a follow-up video on how you measure your ID, OD, and depth to confirm what you cut is to the specifications!

@koharaisevo3666 Жыл бұрын

In the real part it's just the cylindrical boss not a boss inside a pocket like this demo so you can just measure it with a micrometer. You should what the video making the real part.

@ianpendlebury3704 Жыл бұрын

Great demonstration and nice work. Thanks.

@pirminkogleck4056 Жыл бұрын

finaly ! evening is safed ! thx stefan !

@ls2005019227 Жыл бұрын

Outstanding job & thanks for the fantastic video!

@robertklein9190 Жыл бұрын

Super Bowl of T & C grinding 🏈

@first_namelast_name4923 Жыл бұрын

Thank you for yet another very informative and entertaining video. The only problem now is, that besides other awesome machines, such as FP1, I am lusting for a tool grinder. I almost purchased one [in a terrible state] two or three years ago but somebody was faster than me.

@machinist_matt Жыл бұрын

That cut very nicely! It's satisfying when a cutting tool you ground yourself works so well! 👍

@Paul-FrancisB Жыл бұрын

Great a new video I was just watching the Vertex rotary table improvements from the back catalogue

@jimsvideos7201 Жыл бұрын

This makes perfect sense, now that you've explained it so well!

@cncshrops Жыл бұрын

Your comment about reversible spindles encourages me to fit a a reversing switch to my Deckel S0. Definitely helpful for end mill touch ups.

@StefanGotteswinter Жыл бұрын

Careful, they wheel hub needs a keyed washer to be able to reverse the spindle, otherwise the wheel might unscrew itself 😬

@cncshrops Жыл бұрын

@@StefanGotteswinter Good point! Thanks.

@TheUncleRuckus Жыл бұрын

Great video as always Stefan, thanks for uploading my friend! 👍👍

@624Dudley Жыл бұрын

Thanks for this in-depth look at special purpose grinding, really interesting! 👍

@artmckay6704 Жыл бұрын

Wow! What a great tool design! I like it! Well done! :)

@endrekalvenes8460 Жыл бұрын

Great video as always👍

@TrPrecisionMachining Жыл бұрын

Very good job stefan and good video...thanks for your time

@stevensmart8868 Жыл бұрын

Thanks for sharing and as always excellent tips that help us learn. Cheers

@lohikarhu734 Жыл бұрын

cool to see that the 2D drawing, and some idea of tool geometry, lets you put together a reasonably optimized tool, without huge effort... "brain over brawn" 🇨🇦🐻🇩🇪

@angelramos-2005 Жыл бұрын

Excellent video,Stefan.Thank you.

@TheDaumen Жыл бұрын

Don't get frustrated Stefan. You are starting to get the hang of machining and grinding!😁

@StefanGotteswinter Жыл бұрын

At least good enough to pretend to be a machinist on youtube :D

@oldfarthacks Жыл бұрын

@@StefanGotteswinter Ah the old fake it till you make it thing! LOL Nice work, well presented, fun and informative to watch.

@somebodyelse6673 Жыл бұрын

I would have been afraid of snapping that tiny carbide tooth off, due to the stress riser of the corner. What I learned is that corner radius is not necessary if the cutting force is low enough. It takes experience to know how much we can get away with, thank you for sharing yours.

@bustednuckles2 Жыл бұрын

That was incredible.

@hansbjaeke3414 Жыл бұрын

Sehr beeindruckend! Master work 👍

@larryschweitzer4904 Жыл бұрын

Thank you, nicely explained.

@jamesrush5367 Жыл бұрын

Great as always stefan, great surface finish from a hand ground tool, mine always look like hell lol!

@MegaChekov Жыл бұрын

Yea well done i think that may make a cool wood bit for some inlay 2" thanks for sharing all the best to you and yours from John in Texas

@paulmorrey733 Жыл бұрын

Thanks Stefan

@HP_rep_mek Жыл бұрын

Excellent video👍

@joansparky4439 Жыл бұрын

nice, thanks for showing the tool making process 👍

@slausonm Жыл бұрын

Awesome. I will be using this technique. Thank you!

@edsshed3468 Жыл бұрын

I have been watching your channel & shop tours for many years and have been inspired & learned so much from them, I have also bought many items that you had, and I didn’t and constructed some of your projects over the years. I hope you will view my shop tour in Cape Town and see how you have influenced it.

@ashpalmer1365 Жыл бұрын

Woohoo! New video!

@bcbloc02 Жыл бұрын

Well here you are putting those little pegs on with a rotary tool after all. 🙂

@ellieprice363 Жыл бұрын

For a very quick and cheap trepanning tool purchase an annular cutter of the correct size and remove all the teeth except one. Example: To trepan or bore a .750 hole with clearance to prevent rubbing select a .6875 cutter. Again, leave only one cutting tooth. For hardened materials to RC45 use a cutter with carbide teeth. Always look for the simplest and cheapest way to do a job.

@Rustinox Жыл бұрын

Blueing the surfaces before grinding. Such a simple trick and yet so useful.

@mog5858 Жыл бұрын

thanks for sharing keep up the good work.

@TheDistur Жыл бұрын

You make some interesting stuff.

@magnusklahr8190 Жыл бұрын

Exelent video!!

@EmmaRitson Жыл бұрын

love a good tool grinding video. :D

@jtveg Жыл бұрын

Thanks for sharing. 😉👌🏻

@01thomasss Жыл бұрын

"I'll be Back!" Me too...

@CatNolara Жыл бұрын

what you could also do for the angled part: since you always go from the outside edge of the 4mm shank and this position is never changing no matter the rotation angle, just put a driven dimension in CAD from the outside circle perpendicular to the angled line. That way you get precisely the amount you have to feed in. If you don't have CAD it's not hard figuring out this dimension by some easy trigonometry. I can't imagine grinding up to an edge by eye can beat this.

@wilfredswinkels Жыл бұрын

Graag gedaan! 😀

@Ujeb08 Жыл бұрын

beautifully done Stefan! was that 316 Stainless you were cutting?

@ukzen9309 Жыл бұрын

I am a Toolmaker but could never match your skill , but have still picked up tips for day to day ,thanks for the videos.

@darrenblattner2508 Жыл бұрын

Very Nice. 👍

@patheron7812 Жыл бұрын

Good video as usual. How did you measure the dimensions of your feature for compliance?

@David_11111 Жыл бұрын

YAY very impressive.

@AmateurRedneckWorkshop Жыл бұрын

I learned quite a bit from this one as usual. Thanks for the video keep on keeping on.

@MarkW321 Жыл бұрын

Nice!

@troyam6607 Жыл бұрын

makes me want to make an extreme sized trepanning tool somewhere around 50 to 60mm

@mpetersen6 Жыл бұрын

I had a job once where I had to cut the gear teeth off of a part where we needed to use the part from about 25mm below the gear teeth OD. The OD was around 450mm with the teeth around 40mm or so wide. Took a 25mm tall cutoff blade and ground a radius. Took the teeth off as a ring. The teeth were flame hardened to around 50RC. Turning them was not an option. Wouldn't fit in the OD grinder either. Sometimes you have to think outside the box. Because you have no other options.

@iteerrex8166 Жыл бұрын

Tiny adventurers from the Tinyverse. By: Stefan Gotteswinter.

@emiliog.4432 Жыл бұрын

Making small parts and tools is just so satisfying. My dad made surgical instruments and I was always fascinated. Thanks for sharing your work.

@strykerentllc Жыл бұрын

Another excellent tutorial Stefan. The explanation of why you do each step is immensely valuable as well as the tips on how to avoid pitfalls in tool grinding are infinitely valuable. Thank you.

@transmitterguy478 Жыл бұрын

Cool!

@migalito1955 Жыл бұрын

Neat.

@bobuk5722 Жыл бұрын

Ah Stefan, I've got it. You are working on prototype pivot milled in place watches. Very timely video .....

@1873Winchester Жыл бұрын

What's your most important, or most used grinder in your shop and what would you recommend a hobbyist to look for if they could only get one, or assuming a rich hobbyist, what they should get first? Surface grinder, rotary grinder, tool & cutter grinder, d-bit grinder?

@StefanGotteswinter Жыл бұрын

If I could only have one grinder it would be: a) (given enough room) a surface grinder or b) (almost no availible space) a dbit grinder

@mpetersen6 Жыл бұрын

@@StefanGotteswinter Yes, you can do tool grinding on a surface grinder plus some OD work. Unfortunately used surface grinders have gone through the roof price wise.

@macsmachine Жыл бұрын

“I make those myself”😂😂😂😂

@tridium-go6hw Жыл бұрын

The only trepanning I have done was on the lathe, using a ground tool like this in the mill is very interesting. Still, I suppose you could have done this work in a lathe with the same tool, by offsetting the work in a 4-jaw?

@0799davey67 Жыл бұрын

Don't mention the 4 jaw. 🤫

@g.tucker8682 Жыл бұрын

I had guessed that the solution would be a tiny annular cutter. I suppose this is something like a single-toothed version of that. Very educational, thanks once again

@CS-Sir_Twit Жыл бұрын

No back rake on the cutting edge? Is this just due to the lack of cross section or another reason? Love your work mate. Keep it up

@oldfarthacks Жыл бұрын

It could stand a chip breaker, did you see those long chips on the power feed.

@elanjacobs1 Жыл бұрын

Awesome work as usual. Building the profile into the tool saves so much extra hassle in production and it's infinitely repeatable (ignoring the minute amount of tool wear)

@tonys.6034 Жыл бұрын

looks like it may have been sharp! lol great work

@evildrome 10 ай бұрын

This is definitely something I will use. Just out of interest, how many holes did you get cutting stainless with this tool? I imagine that resharpening it is not possible as it has been made to a size.

@johnearley9924 Жыл бұрын

"I make them myself" LOL

@therealme613 Жыл бұрын

😂 🗣“I make those myself” 🥁💥

@localele1 Жыл бұрын

Are those "X Speed" buttons only available in single speeds or did you get a full boxed set?

@wrstew1272 Жыл бұрын

600 Kilos? Wow, that is phenomenal. Looks like a great machine that a talented guy could do micrometer class work the first setup. I have heard that it is still in demand, and carries a respectable price tag if you can find one. Super score! Reciprocal is the word that you were looking for. And your English is beyond reproach….excellent video Stefan. As usual!