Shoptalk #25 - 02-2022
ฝัง
- เผยแพร่เมื่อ 2 ส.ค. 2024
- 00:00:00 Intro
00:01:00 Boring Bar FEM Analysis
00:05:30 Handtapping on a mill/lathe
00:12:21 Ultrasonic cleaner
00:23:22 Microdrill/Pyramid shaped spot drill
00:29:13 Bema Surface grinder
NH Micro Tricut:
/ cti1jbbjk30
/ cuv7xbth1ln
Bema FSM260:
www.bemagmbh.de/en/range-of-s...
The other considered surface grinders:
Lipemec P300:
www.lipemec.com/en_rectifieus...
Saim 320:
www.volz-witten.de/maschinen/...
Okamoto 350 B:
okamoto-europe.de/surface-grin...
Visit my website for FAQ, a list of my machines, my products and some project documentations:
gtwr.de/
Consider supporting me on Patreon:
/ stefangtwr
I post very regular on Instagram:
/ stefan_gtwr
#practitioner_of_the_mechanical_arts - วิทยาศาสตร์และเทคโนโลยี
![NONT TANONT - ดอกไม้ที่รอฝน (spring) - Reimagined [Live Session]](http://i.ytimg.com/vi/nY2PsFZFEOg/mqdefault.jpg)
00:02:52 Mistake on my side, its of course only 1,2 microns. (0,0012mm)
Things like that happen to slip trough during editing, when listening to the same lines 5 times.
In other words, it's a 3% or 4% difference.
Nowhere near 20%!
Yup only 3.6% no biggy
Nice as always, thanks for all Stefan!! Waiting for the Next video
You also say thirty-six instead of sixty-three, but we don't mind Stefan ;) Great video. I watched it till the end, no skipping, but don't need help as I watched at 3x speed ;)
Question, besides the deflection, how much does it effect the chatter? Because that is the real enemy… I also prefer the grind ones, for quick setup
Perhaps folks don't realize we would learn nothing from buying all the solutions to our problems. Learning to solve problems is the basis for developing skills. If it weren't for skilled folks sharing their time making videos, we'd be learning only to the expand the bounds of our current skillsets. I learn so much from videos like this. Thanks for sharing your skill and experience with us.
Yep! The fact that I did so many tool builds and rebuilds early on was a huge skill builder for me - I still to this whenever possible, but sometimes I will just buy myself out of a problem (surfacegrinder) :D
I am fully aware that most hobbyists have not that huge of a budget to spend on their shop, so I try to show / talk about different ways of doing something too.
Agreed completely. I sometimes wonder about the folks watching these vids if they don't understand the idea of making something simply for the exercise of learning something new.
Hear! Hear!
Do you guys realise you're discussing one of the biggest issues in Western Society right now?
What you are talking about is skills training. As in learning from people more skilled.
I'm an engineer and started watching guys like Stefan and Robin Renzetti because I have a couple of pet projects and I need to re-learn and improve by basic maker skills. During COVID I have also been trying to learn about economics and why we all seem trapped in various economic models. If you have ever heard the management line "What's your business case for that" to any proposal then like me you already know part of the problem.
I've mainly listened to a Scottish professor named Mark Blyth. He studies how economics and politics interact with the rest of society. About 2 weeks ago he interviewed a sociologist who's trying to explain why EDUCATION and other things like infrastructure and health care are struggling across America. I'm Australian and we have the same issues. What she worked out was starting back in the 1950s economists started creeping their way into EVERYTHING and by the 90s had become the loudest voice in the room for almost everything including EDUCATION and with it *SKILLS TRAINING.*
It was an Ah-Ha moment for me she explained why these people do this "What's your business case for that?"
It explains why countries like Australia, America, Britain, etc. have shortages of skilled tradesman because to train them was met with "What's your business case for that?" I encounter graduate engineers with no practical skills because our universities are also dominated by "What's your business case for that?"
Don't get me wrong sound economics are important, but something like mining companies (where I work) need to be able to dig dirt, crush rock and sell ore. They can't make money if they can't sell ore. They can't do that if the machines break down because the engineers were ignored, maintenance wasn't done and there's nobody to fix things because there wasn't a "business case" for that.
In Australia (like a few other places) we need to build a whole new generation of power stations because there wasn't a "business case" to replace them. That combined with our complete failure to keep training people means we have a shortage of people to build them. *We have an even greater shortage of people who can train them.*
Sorry for the rant, but people like Stefan, Robin Renzetti, Tom Lipton, Joe Pieczynski and others who not only have great skills but can also TEACH them to others are so insanely important right now. I know most of the people in this community know how great these guys are for sharing their skills. But there is a much bigger problem and their ability to TEACH is going to be damn important.
@@tonywilson4713 Hear Hear. I agree completely.
Thanks for the tips Stefan. I always prefer breaking my taps by hand rather than in a machine so this will be useful information.
😅
Right after a couple of minutes into the video i know that the hour i will spent is well worth it!
Well, I loved every minute of that, especially the ultrasonic stuff, as theres lots of heresay about what to use in them, and how, but if you've had yours for 10 years and not killed it, I think I can trust how you use yours, especially with the quality of your work Stefan. The collet and collet nut tip is great!! Love the new surface grinder what a lovely machine. I don't think any of your viewers would ever think you would boast. You do super fine, precision work, you need machines you can trust, and you've never bought one to flex on other people that I've seen. I look forward to seeing all the cool stuff you make with it. Now, as for me, Im off to get psychiatric help after sitting through this whole video! Thanks for all the tips over the years Stefan and hope 2022 is really good to you and the business!
You know a machine is of exceptional quality when Stefan doesn't try to modify it at all.
Won't stay that way for more than a year...
The bubble on the tap handle is a genius idea.
Awesome, really looking forward to see some "reasonable good quality" work on the BEMA :)
Excellent comment on negativity is not productive. Life is so much better with a positive attitude. 👍
I was literally just about to tap some m4 threads in 316 stainless when that tip dropped Stefan. Unbelievable timing and I think you just changed the way I tap holes on my machines. Fantastic content as always 👍
Thank you Stefan, I am seeking help as you recommended, but the help , unfortunately, is as rare as you are. Your attention to even the subtlest details combined with your humor makes for an enjoyable experience.
Congrats on the grinder Stefan! 👏 Lovely little thing!
"If you made it this far - you need help". Stefan, my man, you are the help i've been needing all this time.
Nice chat, thanks Stefan. Nice TNG calendar.
I am a simple man, I see a Stefan Gotteswinter video -- I smash the like button.
Here in the US we have a warehouse club thats owned by Walmart called "Sams Club" they sell a Degreaser concentrate for $6/gallon that is very similar to "Purple Power", it makes 32 gallons of cleaner if you mix it by the label, or if you mix it 1:1 it will strip paint- I use it in the Ultra-sonic on everything except Aluminum Carb bodies as it turns them DARK (For those I use Berrymans)
My old, worn out 1946 Brown and Sharpe No2 worn out 6x18 Surface Grinder weighs 1,400 lbs.......
I watch all your videos all the way through. Once you are sufficiently crazy they don't even treat you any more. To preserve a small fragment of sanity I watch nearly all videos at 1.5 or 1.75 times speed. to save time. You get used to the speed after a while although some folks naturally talk fast so I have to run those a little slower. Of course your feed rates and material removal rates are impressive. When I try to achieve the same performance on my machines I can't. I tried to order 1.75X cutters and they don't know what I am talking about. I've tried to get 1.75X employees too. No luck. When I meet youtubers in person that I listen to a 1.75X they seem very laid back and relaxed. .
An hour very well spent Stefan. Though in fairness, most of it was staring at the Star Trek calendar. I will have to watch the video again and concentrate this time.
Thank you for sharing your knowledge and tricks with the world. You can choose to educate, or entertain yourself. I will choose the education with entertainment every time.
Take Care and Stay Safe.
Bob
Hey Stefan, another great alkaline cleaner for ultrasonics is "Alconox Powdered Precision Cleaner". It's a very pure detergent; I use it for cleaning both aluminum parts and optics. When I work on optics, I often rinse with deionized water instead of ispropyl alcohol.
I’m so pleased to have come up with the same solution for tiny hole spotting. I made the same tool from a broken PCB drill using a setup kind of like you’d use to cut facets in a gemstone. I needed to drill some 0.002" / 0.05mm holes in PEEK tubing and I needed to spot them first. Thanks for the video. I really appreciate your skills.
Love the Star Trek calender!
Congrats Stefan on the grinder. It could be a hobby machine in a few decades, as a restoration project 😂
With deep respect I say, sick minds stick together, and I would prefer to see your your videos or at lease 95% of each video. Thanks for the work you put into them.
"If you made it this far..."
You might not be fully considering what details your viewers pick up, even when watching a shop talk video. There's a lot of learning done just understanding how any why certain decisions are made. Things you take for granted, are sometimes very meaningful to the rest of us.
awesome addition to the shop
And about your final comment, who in their right mind would skip the end of the video? You are far too humble (if I may take the honors of calling you my friend even though we have not met in person). You provide incredible amounts of information and education for free in a profit driven world. I am constantly amazed by the wealth of experience that you pass along to those of us who didn’t have your skills and opportunities. You are the kind of person that I respect and would be honored to be associated with. Great stuff you are doing, please accept my thanks for doing so.
Thanks Stefan, your work inspires and I love the grinder layout, very nice machine.
Perfect timing I'd just sat down for a cup of tea!
Thank you for making the videos. I appreciate all the tips that I have gained watching them. The new grinder looks lovely.
Congratulations. Nothing wrong with being proud of your work and your journey. Fantastic.
Thanks for taking the time to share, Stefan. That grinder is a really nice machine. Congratulations on the acquisition.
Cheers,
Reuben
thanks for teaching, I learn something new from each of your videos.
thank you stefan! your videos are always fascinating and inspiring
As usual : Clever and very interresting !! THANK YOU STEFAN !!
That's a great grinder! Lots of ideas flowing for me after watching that--thanks!
Beautiful Machine Stephan, looks very well made!
Excellent video as always Stefan
This vid was a bit of a grind. But well worth it. Cheers and congratulations on the new machine.
Congratulations on the new machine. Beautiful
Intresting and congrats to your new grinder. Will be nice to follow your work on that machine. 😀👍
Excellent, thanks!
Very good video, always enjoy your videos
Excellent video. Just bought an ultrasonic cleaner and look forward to using it with your tips!
Another great video from Stefan. Wow what a nice grinder! Thanks for sharing and take care!
Wow! What a great looking machine the Bema is. Congratulations on getting it and thanks for showing it in such detail.
Thank you stefan. Top shelf per usual. Cheers from vermont
Very neat grinder! Congratulations on the purchase!
Congrats on the new machine!!
Good stuff and watched it all. The advise on using the ultrasonic cleaner is priceless. 👍
Watched it all in one session. Enthralled by every minute. Cheers!
Congrats on the new grinder Stefan! I'm excited to see it used in some upcoming projects. 👍👍
I typically tap small threads with a Jacobs 8.5N chuck clamped on the tap, the shank of the drill chuck in a drill bushing.
"The ER collet has an eccentric boss that we DONT machine away" Oh god the nightmares that brought bad.
Bema grinderrrrrr What an awesome machine. The aesthetics are so delicious.
I love your idea for using the machine for aligning the taps. Very simple, but very effective, thanks
Congratulations on both the new machine and the achievements and success that have made it possible for you to acquire such a lovely grinder!
I really enjoyed your shop talk
Yeah, I need to seek help :-) Thanks Stefan, very interesting stuff.
very good video stefan..thanks for your time
Enjoyed…great discussion/demonstration….awesome grinder
Another wonderful video! The time flies by, and then it's over too soon. I really want to see this grinder in action, with some interesting problem to solve, that it will handle. Very well I'm sure.
Great Job!! Just yesterday I was tapping using a small handle, the tap kept on slipping, what a brilliant solution and so simple!! Thank You BTW I was making your boring bars from a couple of years ago
Skip over 90% ?
Are you mad? Your stuff is always pure gold! I'm not skipping over a single second!
I am happy for you that you got the new grinder! It looks like a wonderful machine. Very precise and very well built!
Thanks for doing these videos! Very much appreciated! :)
To see how far you have come is incredible. I still remember you trying to hand scrap something. I remember you started on the shaper and then after about 100 passes later you called it good. To the work you do now
It's always an interesting hour long video on a grey dreary day. It's not always how much the machine cost, but how much enjoyment Stefan gets out of using it in his little factory. I'm sure he's got visions of future projects already, just have to wait for the warranty to expire. I'm impressed that he's got his own root cellar, so , he better get going in the garden soon.
Thankyou,loved it.🇩🇰
Always something more to learn... Thanks Stefan for taking the time to share with us out in "TV land"!
I like the long videos. Don't worry about limiting them to a half hour because your viewers enjoy the long format. You have a calm collected demeanor that's enjoyable to listen to.
Brilliant Stefan, I laughed out loud when you said "and aluminum magnets are quite rare"
That certainly looks like a high quality machine. I'm just a hobbyist and I have not seen one of those manual grinders before. Looking forward to seeing more videos of it in action.
Congratulations! That is a very cool machine. Your hard work and skills allowed that to happen, and you should be very proud of it.
Congratulations on the new addition to the shop. Very well deserved and looks like it was built just for the master machinist that you are. I watched every second of this episode (like I do with all episodes). All the best to you…… 👍👍😊👍👍
I might need help, but I like that you got a 2022 Star Trek calendar in your 'office' ;-)
Stefan, totally enjoyed the video, especially with the new grinder, a very precise piece of equipment for the shop, regards from Auckland NZ.
I made it thru the entire video. Guess I need help😂
Good content👍
Thanks for sharing 👍 Hope your new toy earns it's keep.
Oh! Excellent! Thank you, Stefan!
That was an excellent video. More entertaining than the last three things I watched on Netflix. I'm jealous of the BEMA FSM 260!
Great fun Stefan, thank you for sharing all the things you can do with your new investment.
Hallo Stefan,
ich möchte dir einfach mal DANKE sagen!!
Durch Deine Videos habe ich sehr viel gelernt! Ich arbeite Beruflich zwar mit Holz (Geigenbau), allerdings bin ich von der Feinmechanik begeistert und baue mir verschiedene Spezialwerkzeuge selber (Habe einen Drebank, eine Aciera F3 Fräsmaschine, eine Deckel G1L, eine Kuhlmann S0 Stichelschleifmaschine und eine Aciera T10 Ständerbohrmaschine). Deine Videos sind immer sehr gut erklährt.
Grüsse aus der Schweiz
Great addendum to the shop.
I thoroughly enjoyed this video Stefan. Your surface grinder is a Brilliant piece of machinery.
Excellent and informative video, I really appreciate the knowledge and experience you share.
I’ve known about ultrasonic cleaners, but didn’t understand how and why they work. Now I have one on order for a carburetor and log splitter project I have. The tapping tips are excellent and I could have used your techniques many many times.
Thanks so much.
Lol! You said "you really need help if you made it this far in the video"... That's why I'm here! I garner so much information and ideas from all your videos! What a treat! Great tour of the new grinder! I know you'll reap many benefits from this purchase, however expensive it was! Thanks for your time and sharing! 👍😎✌️
Made it to the end and I only skipped a little bit! Learned a few things. Thanks
I guess I need to seek help, lol. Sure, I can buy pretty much any tool I need, but I learn so much more by making it, and it's so much more gratifying when I use it. And I've never taken any of your machine videos as you bragging.
Thanks for sharing your expertise, thought processes, and subtle but very funny sense of humor.
I can think of no one more deserving to have such a nice grinder, and to squeeze every little bit of precision from it than Stefan Gotteswinter. I hope it serves you well.👌🏻💯
I respect you for having time to make videos for us, considering you have your full time job and your home business too. Thats dedication. I thankyou, and im sure everybody else does too. 👏🏻
Another good and informative video. Well organized and presented. Thank you. OK, OK, I will seek help.
Congrats on the new grinder Stefan and I look 2x the hole video 😉👍🎂
Hi Stefan,
Perfect as usual :-)
Thanks a lot.
I´ve tested the small center (starter) drill by manufacturing a small sampel. It works great!!!
Genious, thanks.
"Aluminium magnets are quite rare"
Yes indeed 😂
ALNICO
Love the shop talks.....another way to guide a very small tap is by machining a holder for the shank of the tap, the tap shank slides into a precise hole (essentiall a tube) and allows the tap shank to be guided up and down as the tap threads in and out.....the top of the small holder is solid and can be tightened into the chuck or collet and held tight.....quick easy and simple to make, combine that with your knurled tightener and its a win win combination and can be used for multiple taps of the same shaft diameters.....Keep up the fantastic work.....
Don
New music, who dis? Bloody awesome Maschine!
Nice Surface Grinder....! You will be glad you have it.... Enjoy your videos!!!
Great video
Yeah, we dont machine away the eccentric ring in the ER-collets, you hear that AvE? 😁
Congratulations for your new grinder... Beautiful piece of mechanical equipment... ❤, and as always very usefull tips...
Out of all the Chanels I watch yours give me the most inspiration to create the tools and equipment I want. And I do watch 100% of your vids so you might be rite I do need help thanx man keep em comeing !