Tool review - JW Bamkin T&C grinder || RotarySMP

[@theromihs]

LOL, love the reenactment!!

[@RotarySMP]

Thanks.

[@benni5941]

Lol, love the 'Bugger off truck' homage to CEE

[@RotarySMP]

Glad you caught that :)

[@rallymax2]

Very nice… friendship you got there, and cutter grinder too.

[@RotarySMP]

Yeah, he is an old mate of mine.

[@Screen511]

14:32 Is a height gauge. It has (should have) the same center height as the tailstock. Thanks for sharing this old machine with us, I like the simplicity of it. Although I wouldn't trade my Schütte for anything. Kind regards.

[@RotarySMP]

Thanks for identifying that.

[@steveggca]

Watching your various tool grinder videos , it makes me realize that they are from a bygone era ,same as nice manual machines. When I started installing CNC machines in the mid 80's (lathes and mills) almost everything was done with carbide inserts. Large bed tool grinders, if they existed at all ,sat nearly forgotten in a back room or corner of the shop. You are obviously enjoying your vacation , thanks for taking the time for another video😁

[@RotarySMP]

Very true. I mostly use insert tooling on the lathe and mill, so the Clarkson is only for making special tools and for solving awkward problems. It is a fun machine though.

[@RB-yq7qv]

A great little grinder.perfect for the DIY shop.

[@RotarySMP]

Yes indeed!

[@danceswithaardvarks3284]

Very nice bit of machinery. I picked up a couple of design ideas watching this: the locking screw gear (raising mechanism) is perfect for a wing compass I am making and I will be adding a centre screw to my shop made hydraulic press ( I can see that being a big time saver). That press is also a really nice bit of workshop equipment.

[@RotarySMP]

That press was locally made in NZ, but was really designed and done right.

[@Paddington60]

That's a very nice machine, thanks for sharing with us Mark.

[@RotarySMP]

Thanks for the kind words.

[@624Dudley]

I suspected that a visit at Anton’s place would be on the itinerary. Nice find! 👍

[@RotarySMP]

Hi Doric. It is a really nice machine.

[@iteerrex8166]

Great machine, in great condition, at a great price, is a great find. Lol congrats 👍

[@RotarySMP]

He has a good eye for a bargain.

[@mumblbeebee6546]

Busman’s Holiday - glad to see the beach could not deter you from your calling for long :) Nice tool, great video!

[@RotarySMP]

Thanks for your kind feedback.

[@EdwardRoss-tb5hz]

Super nice find, can't believe how complete it is!

[@RotarySMP]

Yeah, he got lucky that the main accessories didn't get lost somewhere through the decades.

[@squelchstuff]

What a lovely piece of kit. Seeing that stand, I seem to recall seeing one in the wild (the model and toolroom) at a place I once worked here in Blighty. Not having graduations or detents is not such an inposition as the craftsmen that worked them could probably set them up blindfold and by touch alone. We get so used to modern conveniences... Your mate has a nice looking shop there too. Thank him, and thanks to you for the insights and trip down memory lane.

[@RotarySMP]

Yes, Anton has put together a nice selection of tools, and has a really nice shed.

[@squelchstuff]

@@RotarySMP 0:15 If that's the view from his front door tell him I'll fight him for it 🙃

[@RotarySMP]

@@squelchstuff He's not that lucky. That is the view on the trail up Mt Manganui. It is a nature reserve.

[@julias-shed]

Nice bit of kit built in my nearest city! 😀

[@RotarySMP]

Hi Julia. They really made a nice grinder.

[@stevensmart8868]

Good video Mark. What a nice old grinder. Ive got a bridgeport and colchester lathe that could go some of your cleaning and maintenance action if you have a spare day in Wellington.

[@RotarySMP]

Hi Steven, sorry, I already returned to Taupo. If you drop me an email (there is a link on the channel homepage), I can get you in touch with Anton.

[@stevensmart8868]

All good. I just had to try ya. And comment for the algorithm.

[@andypughtube]

It also looks entirely usable as a surface grinder, just needs a magnetic chuck. And those have recently become remarkably cheap.

[@RotarySMP]

Hi Andy. Anton has a proper surface grinder, so he already has that base covered. Those nodding head T&C grinders, are not really optimal for precise fine down feed, as you want on a surface grinder, but will do it at a pinch.

[@Rustinox]

That's a really nice machine to play with. And it looks cool too.

[@RotarySMP]

It really is a nice T&C grinder.

[@MyMiniHomeWorkshop]

That chain drive is an interesting concept that I may find a use for some time, I have to say I wouldn't have thought of that. 👍

[@RotarySMP]

It is quite common for surface grinders to have chain or belt drives.

[@voltairegoethe]

did I just see a crescent wrench used properly?... with the fixed jaw doing the pulling? Twice? I did. I just regained faith in humanity,

[@RotarySMP]

Thanks for the quality check :)

[@megejaslt]

You can also try to use a capacitor to run this motor, about 100 mikrofarads per kilowatt. They are quite cheap There you will have only 1/3-2/3 of power, but no additional electronics.

[@RotarySMP]

A VFD is so cheap these days, and adds a couple of nice features itself, so that is the way Anton is going.

[@watahyahknow]

was looking intoo a simulair arm setup for lowering and raising the grinder off the table for a homemade setup , looks like it could work considered a chain drive setup too though with the chain just tensioned under the table and running over the sprocket

[@RotarySMP]

This is a really well thought out machine. Will be much quicker to set up than the Clarkson.

[@windrk_6754]

Nice little machine - but I didn't notice a table stop, which can be really helpful when running the end flutes into the wheel repetitively.. maybe it was on the back of the table? Great video, thanks for sharing the fun..

[@inmyshedwithbc.]

T & C grinding is a bit of a disease and it's caught you by the looks of it. All the best. BC

[@RotarySMP]

Yeah, great time wasting hobby machine :)

[@philhermetic]

If there are only three connections it is almost certainly in star already. Brook gryphon motors were supplied like this although this looks like a repair or rewind from the terminal lugs. Leicester was a centre for knitting textiles, and they also built masses of textile machinery and had a large machine industry. My ww2 Covmac lathe was rebuilt in the fifties by IL Berrige, a Leicester company whose main output was industrial knitting machines. The Covmac was actually built by P&C Garnett in Cleckheaton as war work, they also were precision engineers who manufactured textile machinery! There is very little history on the Covmac company itself. Phil

[@RotarySMP]

I guess the main issue it that these are 230V windings, and 3ph is 400V here. Going to a VFD is quite attractive, as it means he can supply it off 230V single phase, so it will be more flexible as to where in the shop it sits.

[@philhermetic]

@@RotarySMP uk 3 phase is 240v per phase and around 415v between phases so it should be ok to run as is, but the vfd would provide speed control.

[@RotarySMP]

@@philhermetic The motor data plate lists it as a 230V motor, so I suspect 400V would fry it.

[@philhermetic]

@@RotarySMP right, so it is a usa export motor, it will have to be a vfd!

[@philhermetic]

Ok so I watched the video again(Duh) and all becomes clear! The motor rating plate says 440volts, which has been sharpied out and the 240v delta connected written on the motor case which explains the non standard terminals on the cables. It should be possible to reconnect the motor in star so that it will run on 400v. In star there are two windings between each phase, in delta only one winding between each phase. So you could say that all three phase 400v motors have 230v windings and will run on 400/440 v in star and 230/240v when connected in delta. Using a vfd will work of course , just a bit more expensive, but less fiddly than reconfiguring the motor connections! I will now write a hundred times “ I must concentrate on what I am Watching”

[@chrisarmstrong8198]

The wiring on the motor terminals has me confused. Why are two of the terminals linked?

[@RotarySMP]

Good question.

[@jimurrata6785]

I was watching the screw extraction and thinking "it's probably reverse thread, on the other side of the spindle" Ha! You faked me out.

[@RotarySMP]

We first undid the intact screw on the other side (which was LH thread), to confirm the broken one was RH.

[@LCalleja]

There I thought no video this week :) nice machine and looks good for its age

[@RotarySMP]

Hi Luke. It just worked out like this. It really is a nice T&C grinder.

[@LCalleja]

@@RotarySMPglad it worked out been seeing a few tool and cutter grinders on your channel lately :)

[@RotarySMP]

@@LCalleja Maybe it is not longer this old lathe channel :)

[@MatthewTinker-au-pont-blanc]

Nice machine! I'd have a quick look behind the terminals to see whether the other end of the windings are accessible!

[@RotarySMP]

I did, and they aren't unfortunately. Using a little VFD means it can be plugged into single phase, which has advantages about where it can be located.

[@MatthewTinker-au-pont-blanc]

@@RotarySMP I'm a big fan of VFDs, but I have had insulation problems with old motors. The reconstituted phases can have eddy currents that excede the insulation capacity of older motors, burning them out!

[@RotarySMP]

@@MatthewTinker-au-pont-blanc Good point. I was lucky with the Schaublins motor, as it has insulation class F. Given the way this motor has been repoled from Star to Delta, I wonder if it was rewound, and whether it has decent modern insulation lacquer.

[@PeterHribljan]

Hey thanks so much for posting a vid of a bamkin grinder, I have one as well and haven’t seen any other pictures other than the catalog! I might send you a email with some questions if you don’t mind, I don’t have much tooling for it, so some help would be appreciated.

[@RotarySMP]

There is an email address in my channel main page.

[@chrisstephens6673]

I can see a video in your future, Bamkinising a Clarkson.😂

[@RotarySMP]

Hi Chris, yeah, there are a couple of items for the to-do list there.

[@jimsvideos7201]

Having worked on English aircraft, I see parallels in design philosophy here.

[@RotarySMP]

Hi Jim, nah, the access is much better here :)

[@jimsvideos7201]

@@RotarySMP That's a fact 😂

[@RotarySMP]

@@jimsvideos7201 We had British planes in the RNZAF trade school. Terrible access seemed to be a design goal :)

[@bchdsailor]

Your safety boots are truly safe, what brand? 😏 No wonder the went out of business producing a grinder like that, but it is vintage - not retro

[@RotarySMP]

I saw these safety shoes on a foundry video from Pakistan. They are very comfortable. Truly vintage.

[@Andrew_Fernie]

How does it go? Zing, zing, zing !

[@RotarySMP]

That is it. And then you index to the next tooth and zing zing zing again :)

[@Andrew_Fernie]

@@RotarySMP 😄

[@chrislee7817]

Almost everything better than a Clarkson. Wonder why they went bust

[@RotarySMP]

Too expensive to make, or they didn't have the cutter production Clarkson had, which maybe carried them through some recessions?

[@matthewgrallert1603]

Left twist drill

[@RotarySMP]

Blunt drill.

[@hedning003]

"Bugger off,truck" Mark,you need to go to kangaroo-country and learn the right words and pitch,cool feature whit that chaindrive,never seen that before

[@RotarySMP]

My little homage to Curtis. I think chain drive tables are somewhat common on surface grinders as well.

[@jimurrata6785]

I want to fill my red truck with beer. Any hints or tips?

[@RotarySMP]

You'd have to ask Anton. I borrowed work clothes from him. :)

[@jimurrata6785]

@@RotarySMP I guess I need to get out to Vancouver if I want to load my red truck with beer. 😟

[@antonwhittle415]

I bought that T shirt in Vancouver at the Flying Beaver. Great spot.

[@jimurrata6785]

@@antonwhittle415Thanks for the reply! I'm nearer NYC, but if I ever get out that way.....

[@LongnoseRob]

Nice machine

[@RotarySMP]

It really is.

[@JCWren]

Mark: "I need some content." Antwon: "I'll let you show them this surface grinder, but you have to clean it up for me." Mark: "Does it have a data plate?" Antwon: "It does..." Mark: "I'm on it!"

[@RotarySMP]

Yeah, that was about it :)

[@simonvongunten9288]

Still a real kiwi after all those years in europe! Working with flip flops in the shop... 😅

[@RotarySMP]

Not a great safety shoe example there :/

[@simonvongunten9288]

@@RotarySMP probably not, but very stereotypical kiwi. 😉

[@MikelNaUsaCom]

I hate it when I lose my nipples in a random hole. Happy Sunday!

[@MikelNaUsaCom]

One of my best memories of my youth was when I was a fireman in the Navy. As the engineering crew we get two less days of liberty than the rest of the crew, as it takes a day to shut down the plant, cool down the machinery and get it on shore power, and we have to come back a day early and start things back up one day prior to leaving. Lighting off the boilers, and getting everything back up to temperatures and pressures takes about a day, if you do it correctly, by the book. So if there are 4 days in port, engineering gets two days of liberty, and the rest of the crew usually gets 4 days. In the late 1980's, we made a visit to Portsmouth, England, and my first day in was refueling the ship. As a 19yr young buck, I was responsible for maintaining about 1 million gallons of DFM and I remember sitting with the boat crews monitoring the refueling with them. They offered me tea, and it was the first time I had milk in my tea.

[@RotarySMP]

Nice one.

[@TheUncleRuckus]

👍👍

[@RotarySMP]

Thanks.

[@tinygriffy]

"Bei Ihnen hat wohl jemand die Stellschrauben lackiert !" aka "Sie haben ja nicht alle Tassen im Schrank !" (o. so ä.)

[@RotarySMP]

So sehe ich es.

[@brendanshorter5550]

Way to gaslight me into thinking no video.

[@RotarySMP]

It just worked out :)

[@adagioleopard6415]

Blondihacks would be so proud of that reinactment

[@RotarySMP]

Thanks :)

[@PeterHribljan]

Hey thanks so much for posting a vid of a bamkin grinder, I have one as well and haven’t seen any other pictures other than the catalog! I might send you a email with some questions if you don’t mind, I don’t have much tooling for it, so some help would be appreciated.

[@RotarySMP]

No problem 👍