D-Bit Grinder Restoration - Part 3
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- Опубліковано 7 лют 2025
- This episode on Blondihacks.com, work continues on restoring this awesome Kulhmann SU2 cutter grinder! Exclusive videos, drawings, models & plans available on Patreon!
/ quinndunki
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Okay first of all I want to say this old effer loves your channel. I bought a lathe mill combo (don't judge) so I could make small parts for the boat I am building. But I had never been within 20' (6.5 meters) of this kind of gear before so... Yeah I was clueless. ABOM79 is kwel and all but lets face it, what he does and what I want to do are in different solar systems. Then I found you :D I will admit that since I don't have a cat, I thought the cat tooth brush series had nothing to do with me... Yeah proven wrong again. I really enjoy your channel and watch every episode now because a) I learn stuff, b) your honest! So yeah I broke down and admitted you earned it and went to Patreon... uhm ma'am, you need higher levels of support. Just saying, $10 gives me top level??? I was headed over there to spend twice that much... Don't get me wrong I'm not complaining about $10, I'm just saying I would have paid more. ANYWAYS Thanks for sharing your knowledge with this old effer! YOU ROCK
That’s amazing, thank you!! If you’re inspired to do so, it is possible to set a custom pledge level at anything you like. I do have a few very generous viewers who do so. I’m grateful for support at any level though! You can do that at patreon.com/QuinnDunki
1. These are super cool parts. This machine is definitely engineering indulgence.
2. I'm an American and I call them spanner wrenches, because a regular wrench is just called a wrench.
3. Obviously you put the aluminum parts in the evaporust so that any rust residue on them from contact with the steel will be cleaned up 😀
3A. Obviously you used the bin with the holes so you could get rid of any rust residue om your workbench... 😁
I love your channel, and I am catching up on all the old stuff. Gives me plenty to watch while I wait for my life to reboot.
I love your technical jargon and your sense of humor!
I have three west German machines.... I fully understand the frustration with all the straight slot screws, eclips, snap rings, hidden pins etc, can be. Keeping up with where everything goes is a pandora's box within the enigma.... I salute you.😁
Hi Quinn,
The splined handle fastener with both external and internal screw threads, with the cute wedge is a "Differential Screw".
Enjoying the top notch engineering design and manufacturing, great vlog and discourse.
Tip: rotate the round file on the forward stroke to improve surface finish 🤗
Thanks for sharing.
Love listening to you speak, it’s very soothing. The project looking good.
I like talking, so that works out well. 😜
Another great video as always. A little trick I learned from a gunsmith friend to apply a thin coating of oil to parts is to use an old style shaving brush. Apply a couple of drops of oil to the brush then brush over the area you want coated. I keep my brush in a Ziplock bag when not in use to keep it from getting contaminated. I use this to keep a light coat of oil on all my firearms as well as on precision measuring instruments such as calipers and micrometers.
The screw trick (9:00) is the only mechanical advice i had from my father. It was a pleasant surprise that you mentioned that. Good job. Keep that way.
8:56 - "an old mechanic's trick", eh? Interesting! I don't remember where I learned that, but it's a darn good trick. I almost always use it, on everything... from the plastic threads on kitchen liquids (juice, or whatever) to machined metal, and all things in between. I suspect it was taught to me in my tech theatre days? Anyway, undervalued tip, if folks don't know it!
I've done 6:40, earlier this Summer, with Evaporust, in the same Sterilite bin. Also found out you can leave stuff in evaporust too long, and that some iron/steel alloys and plated parts don't respond well. Best to check on stuff periodically, and not leave it longer than needed.
I've watched all your videos from the beginning and I'm tuning in to your sense of humour , keep up the amusing , entertaining and very informative channel .
Hand Impact Screw Driver, I got one for my motorcycles, but works great for what you are doing as well.
Also useful in disassembling old 800MB scsi hard drives.
Absolutely. I should look at the brand on mine because it's damned near indestructible.
Came out great no matter what you call the pin spanner.
Nice work. After a bit more attention this is gonna be a very useful machine. The day i have some tool bits to grind i will come and see you.
Now the wooden work bench will not rust since it now has been treated with EvapoRust.
PS “Hotel Pans are very useful when soaking and cleaning parts and can be purchased fairly cheaply at restaurant supply houses or if happen to catch a auction of a restaurant that has gone out of business and sometimes can be found in thrift shops. I also use inexpensive enamel coated pots to soak and clean small parts combined with a small induction burner
Thanks!
Am planning to by both a lathe and a mill. Am studying your videos. Thanks.
I teach as well as produce my own videos. Have to say you are an excellent teacher. The human component is top-notch. I watch other videos which appear to be excellent tech-wise and seem to be great people but some of them go way too fast with no context and spew technology as if they were driving a manure spreader…I get lost and will re-watch yours in order to level-set.
(Back to production of video) your storyboarding is top-notch!
Those are neat parts. I know that to some, to appreciate neat parts is kind of goofy, but that's their problem.
This is a very interesting project.
Thanks and Meow.
Now, I want a D-bit grinder. Hey, even seasoned machinists couldn’t find the big red emergency stop button, in a panic, when needed. The e-stop button could be human sized, and you d still would miss it to throw yourself at it, to stop the machine in a panic. But, ya still learn something. Great video, I like how detailed you were about the fiddley parts.
11:04 that is the same solution i used when i made the locking handle for the tailstock on my lathe. the eccentric pin pulls on a threaded rod that goes through the tee nut under the ways.
Also the ATM crack warms the cockles of my heart 😄
Now that I've been informed of the German passion for flat-head screws, I see their deeds everywhere... Nice job avoiding more chowder btw! (Was a bit surprised evaporust was the only treatment - expected ultrasonic then I remembered you're not making small engine videos so might not actually have one. All I have is a jewelery one I got cheap at Goodwill but even that has made me a convert.)
"It's chowda, say it right"
I was going to suggest ultrasonic & detergent before the Evapo-Rust, to remove the grease and caked-on grinder dust. I use mine so often at home - works well & fun to watch bits of crud get knocked loose.
Never panic just fix it 😉great video about the restoration
I don't know if the name applies to the springs in your grinder, but I've seen stamped conical washer-shaped springs w/o all the slots referred to as "Belleville springs" and "Belleville washers".
They can be spec'd to apply a fairly high spring load in a very short installed height; I've also seen them installed where they were stacked in alternating directions (small end butted to the adjacent washer's small end; big end to big end - lather, rinse, repeat...).
One other thing: if you find you've opened a can of chowder on the head of a screw (like shown @ 5:48), you can actually mitigate much of the damage by *carefully* tappy-tap-tapping down the raised burr that was upset by the screwdriver (knocking it back into the wallered-out slot), and running a file over the head of the screw to make the "apprentice marks" much less visible.
Also, gunsmiths use screwdrivers that have hollow-ground tips, so the faces contact the screw slots squarely. I wish I had known this for my first 35 years of working on stuff...
I'm glad you kept this video PG-13
This video would have been inconceivable without the "The Princess Bride" reference.
Inconceivable!
Nice video, love te machine.
In order to use evaporust, you need to degrease/wash the parts clean. The grease and groom prevent the Evaporust to contact the desirable surface... :)
Ah yes, the green handled target bins strike again - they've foiled my plans before as well lol
10/10. Would watch again.
Great video , thanks for posting good insight of the inner workings , should be good reference 👍👍
Gday Quinn, I had to laugh when you filled the container with the handle holes, I’ve done the same thing and I could see it happening, the first thing I said to myself when I did it was “WHY, JUST WHY”, great video as always, thank you, Matty
In English English your home-made wrench is called a "C" spanner, pronounced "see".
Excellent work as usual.
C as in “cheerio”. Got it. 😬
In American English ... sorry.. 'murrican English, it's called a "hook spanner"
its a sad fact that the only time i enjoy my job is when i have to make bespoke items on the lathe/milling machines thanks to quin , abomb, and many others i can do a decent effort...thanks quinn!
I second that. I didn’t get the opportunity to learn stuff like this in school (born in 63 and condemned to accounting and law) and I am thrilled there is such a huge source of good info coming from video creators like Quinn, Adam, John, Chris, etc.
Don't forget the "kaniveling pin on the wobbling shaft" (ha!) Keep up the good work
you could drive out the small pressed in thingy with a slotted wedge if you put a nut on the thread..... just a thought.
and nice video, as allways, and thanks for the effort.
You should check out the Post Apocalyptic Inventor's video on using electrolysis to remove rust. DC current with massive amps, like the DC welder he uses, is the best I've seen so far. Laundry soap is much cheaper than Evaporust etc.
I also like that you're using simple green. I plan to try that in a ultrasonic cleaner.
Massive Amps is not good. Less than one amp is usually more than enough. I use between 1/2 to 1 amp at 12V.
Oh man, that equipto is looking OH SO DAMN GOOD! since you spruced it up Quinn, and so oooorganised!!!, that should've been censored haha, loving the restoration and all the other videos, thanks heaps!
I may do a video on that cabinet. People have asked for a “shop organization” video a few times.
@@Blondihacks i for one love seeing how all of you set up your shops! That would be great! And thank you for the reply. Cheers from Australia,
Sam
I’m using a cone coffee filter and funnel to rebottle my used EvapoRust once I’m done. How are you saving your EvapoRust once finished?
nice save on your spanner comment . i said "solder" a few times on my channel and a few people went atomic . i learned that i am a yank .
" Oh, behave!" LOL
Love your content!!! So it must be the year of the d bit grinder. Over at the “Woods creek workshop” you-tube channel he just started a teardown of a Deckel. I know yours is a clone but he seems to be going at it from the opposite direction so if you aren’t too far backlogged with video post processing there may be a trick or two you can spot. I made a similar comment to him on his channel.... with the added pun that perhaps you two might meet in the middle. Looking forward to the next installment.
Yah, last year it was shapers, and this year everyone is talking D-bit grinders. 😁
@@stanwooddave9758 OMG I would love a K&T. So much cooler than the Bridgeports that everyone always gets (because it's the only milling machine they've heard of 😂) Would love something that can do horizontal and vertical milling like that.
Inconceivable!
I have a question for anyone familiar with the voodoo of hand scraping..
I'm kinda expecting to get shot down in flames but, disregarding scraping for flatness and thinking only of even oil distribution. Instead of scraping could you scribe diagonal hatching into the ways? say 5mm spacing, and achieve the same result ? after stoning of course. Is this why some factory grinds are a bit rough? Logic suggests it should work and give a different visual look.
Just thinking, which I know can be very dangerous 😁
Good questions! Scribing diagonal lines is basically what scraping is. You’re creating a cross hatch pattern so that only a matrix of points is touching the other surface. That’s how you achieve flatness. Regarding rough factory machining, those are just tool marks from roughing cutters. It’s sufficient because the tops of those toolmarks are still pretty flat, even if the surface isn’t smooth. It averages out against the mating surface. A better finish is more desirable for many reasons, but that costs money. 😀
Thanks Quinn. Thats how I understand it. Wasn't sure if it was a great sacrelige against the machine gods or not 😁 Was just thinking of a different way to do it, quicker? easier? dunno but I reckon hand scraping would do much good for arthritis. Plus I'm a stubborn non conformist.
Little Rexman lathe is up and running 🎉 been doing some baby steps stuff, getting familiar with it but I think the ways need resurfacing. Might ask new mate ua-cam.com/channels/JUei-_4UQy5bgAvmFVnWWg.html Craig if he wants to try it. Of course that will mean changing the motor to vfd and revisiting a few other little issues as well 🤦♂️.
I honestly don't understand the concept of boredom
I wondered what the official name of "mystery goo" was, I always called it swarf juice!
No fun if it's easy.. between this and the poor old mill.... you are having waaaay to much fun
Oh gosh, the mill was an odyssey and a half. Stay tuned for that video.
🤣Looking forward to it.. Lens video looks like full open heart surgery with a few organ transplants and a frontal lobotomy
@@billbaggins Oh I'm glad someone watches those! :D It's been quite an operation, that's for sure.
gotta get my $10 worth 😁
I knew I should have watched part 3 before I said something you already knew.
What is your preferred lube for in those assembled joints?
I’m using a basic light machine oil, like 3-in-1. For the dovetails I’ll probably use ISO68 way oil.
It’s like boning and re-inboning a previously spatchcocked chicken. Did you consider a paint job for the castings?
I decided to leave the original paint. It’s in great shape and is higher quality than what I could do anyway. I like the character!
Blondihacks I look forward to the Cold/Hot Bluing video. Was it mentioned what was wrong with the mill? And will you be making a repair/reassembly video of it?
@@mtwagner The mill had an electrical... explosion... of sorts. There will indeed be full video on it. It's been an odyssey!
@@Blondihacks How's PM's customer service been?
@@mtwagner First rate! Matt over at PM has been hooking me up with all the parts and tech support. We're getting it all figured out. I'll cover that in the video on the repair as well.
That panic was fun! :) Maybe, if you had taken out the biggest part, the fluid level would have dropped sufficiently ... 😉
And OMG, no paint stripping nor painting !? 😱
See, THAT is the kind of advice I could have used in that moment. 😂🙃
I love your sense of humor & censor humor !! :-) lol
Haha, I see what you did there. 😉
Tappy Tapp tap!
I still like the middly bits.... 👍🤣
Buckle up!
Hi Quinn,
Getting caught up on your projects and tutorials since I subscribed. Has the Swag Portaband kit arrived yet?
I need to make some space for it first. Space is the biggest challenge I have here. My shop is very very small.
Hi Quinn,
The foot print is about 12 - 13" square and about 24" high.
Reapplying the black oxide coating is not difficult. It's a bit dangerous though.
I want one to take apart Quinn, TFS. G :)
When using an ATM machine please endeavour to use the correct PIN number.
Great job on that custom tool!
But it sort-of looks like an ordinary AR castle nut wrench could've worked.
Oh lots of tools exist that would have worked, but I don’t own any of them. 🙂
Hey, I'm sure early this time
Those stacked diaphragm springs act at all like Bellevue tensioning washers?
Edit: @13:33 don't have access to edm?
The best thread lock is rust. :)
“INCONTHHEIVABLE!”
ATM Machine..... Ouch, Quinn.
Isn't the oil very prone to picking up dust in such an application? A dry lubricant would be more suited in my humble opinion
This is assembly lube on internal components
13:47 *You* behave! 😉
Somehow I missed hearing about your mill being down. What happened to it? Is that the next project? By the way great video, I have a d-bit bit grinder like yours. Thanks for taking us on the resto journey.
Yep, the mishap and repair will be a video soon!
it can't be stuck if it's liquid
🤣😂🤣 I’m gonna steal that line at some point
@@Blondihacks Go right ahead. I got it from a mechanic friend
I can't believe we British would complain about "Spanner" vs "Spanner Wrench" we are normally to reserved for such a thing... lol
5:33 Can't be tight if it is molten :D
ATM Machine :D
"WD-40 is a good solvent for mystery goo." I assume there marketing department reached out right after this video?
Not yet. 😬
I think its strange when you use the word wrench instead of spanner 🤣🇬🇧
The Chinese versions of this machine are NOT made like this. You are going to end up with an amazing little machine when you are done!
Have you ever heard the term, "chalk your file" or "keep your file chalked"?
Yeah, I hadn't either until I met an old school gunsmith a few years ago.
The theory is, filling file teeth with chalk prevents the buildup of metal chips in the teeth of the file. It increases the effectiveness of the file, extends file life, and produces a smoother, more professional finish. Metal removal is faster and easier, too. An inexpensive time and money saver.
Interesting! I have not heard of that! I’ll give it a try.
The traditional reason to chalk the file is after course filing to produce a smoother finish rather than using a fine file
Does Quinn offer you a paid internship?
Are you going to re-paint it at the end?
Good question! I decided not to, because the original paint is in good shape, and it’s a lot higher quality paint job than what I could probably do.
@@Blondihacks Bit of patina looks better than brand new 👍🏻
While the Evapo-rust company's website doesn't list what it attacks, I did find an interesting article on a Italian website (www.envirem.it/EN/Evapo-Rust.htm) that lists the oxides attacked as:
Maghemite (Fe2(3+)O3), Magnetite (Fe(2+)Fe2(3+)O4), Wustite (FeO), Iron hydroxide (Fe(OH)2), Iron trihydroxide (bernalite) (Fe(OH)3), Akageneite (ß-Fe(3+)O(OH,Cl)), Feroxyhite (Fe(3+)O(OH)), Lepidocrocite (?-Fe(3+) O(OH)) and Parkerizing (both types: manganese & zinc)
I'm hoping the page is correct, because it has a lot of other really interesting information about Evapo-rust. Works through chelation! Why the steel ends up a bit darker (carbon migration)! As well as magnesium and cadmium incompatibility!
That matches the behavior I see from it, for sure. I found one surface that it discolored, and I suspect it’s chromed
huh huh huh you said shaft :P
but out actually stupidity these are mainly designed for griding drill bits? im kinda one of thos whos always just used a bench grinder for drill bits
The original intent of these is to make D-bits, which are single flute cutters, generally used for chamfers, form tools, engraving, etc. However they turn out to be very flexible machines and can be used to grind lathe toolbits, sharpen endmills, make broaching tools, and yes, sharpen drills! 😀
@@Blondihacks yeah ive watched some of stefan`s videos i kinda assumed D-bit was short for drill bit
hope ya get the mill up and running again soon more vids are needed
You have a UA-cam channel...?!
Maybe you’ve seen it?
For future reference, the little Equipto bins make great emergency bailers.
Haha, good to know! 😁