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Thanks Steve. Your step wise approach has helped me to be more planful when I am working on my projects.

that's an excellent advice I read in the forums that using the weight plates is a big NO NO, and it discouraged me from using them. now that I've seen your video, I will definitely use these cast iron weight plates and machine them for various purposes including the back plate for my 4 jaw independent 125 mm chuck, also from Sanou (it has 4 mounting bolts)

I recently bought a couple of 1/4" drill chucks off ebay made by San Ou to make one of your tool post drills. They are also very good quality.

Great info on the new chuck. Seems very nice. Great idea modifying that cast weight.

Very nice. I like the indexing holes, great idea. Love the choice of metal stock as well!

The weight lifting disc maker would be really happy to see some magician work man could do magic too with it. So good.

Thanks for the video Steve, Useful tips and revews.

I have the exact 3-jaw that came with my HBM 250x550 lathe. I took the chuck apart and cleaned it and put in a generous amount of grease - now it’s really nice to tighten with minimal friction and noise :-) Thanks for posting Steve! You’re a great inspiration and I always enjoy your videos :-)

Hi Steve, just so you know I made the mandril for converting the mini lathe to pully with 3 phase motor and VDS, brilliant video, I'm learning a lot from you pal, Terry from Scotland 👍

As usual a great video and excellent audio, especially the accompanying chorus from the Blackbird.......10/10.

Great video Steve thanks for sharing

Ingenious idea one transferring the holes from the chuck to the back plate. One addition it made me think of, would be to use an old allen key to make "points". Grind a point on the end of the key, and then cut off the pointed bit to a length that would have the point 10 or so thou proud of the hex in the stainless stud. Screw the studs in flush, drop in the "points", and transfer the holes. Basically, the poor man's version of transfer screws. When you're done, retrieve the points with a magnet, take out the studs, and you're Bob's nephew. Allen keys are reasonably hard, so they should last a while (as long as you're not wailing on them), and you'd end up with actual center marks, rather than the circles. Plus, one allen key would provide a fair number of points, and you wouldn't have to worry about replacing the studs.

Hi Steve, I watched earlier video metals from car boots & I made back plates, I used vacuum cleaner with mag base flexible post to hold & position hose I was able to have hose coming from rear of lathe,it leaves more room and keeps noise down. I like the 3jaw I will be getting one,thanks again for another great video.

Thank you for this informative teardown. Have a great day!

I like transfer screws myself so I don't have to center punch and maybe be off a bit

Another excellent project Steve !

Nice work Sir, watching you is informative. Great trick with the exercise weight as stock material to work with as well with the brass plumbing fittings. Thank you for sharing. Cheers!

Wonderful job, Steve. I always enjoy your videos. Thanks.

After all that your not going to show the runout? Love the idea of using an old weight for material

Nice instruction Steve as usual.Enjoyable to watch.!!

I'm glad to catch your chuck review. I have one, with my new Lathe. It sounds like a great idea to do the same process for finding any interior dirt.. Then I'll check the runout, before I run anything. Thanks for your inspection process.

Great watching you work. Thanks for sharing

I wonder if there's a difference in both age and location of weights. I know that in America, someone tried machining a weight and it was as porous as a sponge.

Isn't cast iron brittle? I am about to have a backplate machined in order to mount a lathe chuck (6 jaw by Sanou) onto a core drilling machine. The problem is that sometimes the core drill gets jammed in the masonry. What material would you recommend for that application? - I was thinking of steel and maybe even hardening it after machining, but hardening will also make it more brittle, won't it?

You have the 4 jaw for a bit now, how are these for wear? Paddy

been courious which would be better make backing plate so register is withen a few tenths to día or..make it a loose fit say .003..5 thousandths smaller so if has run out can tap to center...just asking for a opinion

I prefer to use transfer screws as they indicate a point rather than a circle. I always enjoy your videos, Rollie

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Excellent work. Great idea with weights. Thank you for sharing

What would you do if you didn’t have a spare myford backplate?

OUTSTANDING Job STEVE!!! I never would have thought about using cast Iron weights for a backing plate -I bought 4 Jaw for my SB it did not come w/a backing platea few yrs ago (it was too good of a deal to pass up) NOW I know how to make one Thanks Steve ! btw - Any Ideas on how I can get the 3 Jaw off LOL Man is it stuck on there!!!! I am worried about messing the gears up to lock the spindle so I can put some hefty torque on it to try and even get it to budge!! so needless to say I kinda gave up on it until I can think of a way to hold the spindle TIGHT!-------- As always TWO THUMBS UP on the videos my Friend!!!!

Hi Steve Just took my new Sanou chuck to bits there was some swarf and a few burrs on chuck body gave it a good clean and deburred body now runs smooth haven't tried it yet. But looking how it's made I think this is one hell of a bargain. Just to add love your videos, very informative. Stay safe and keep up the great work. My mate has found your channel and he is really enjoying the videos as well.

I bought the same in 160mm in steel but had to make a camlock D1-4 backplate its a very good chuck for little money if I would have bought a steel backplate every plate would have been more expensive than the steel chuck :-) K11-160A (90eu with reverse jaws ) most other chucks companies are far to expensive for hobby so it's good having SanOu on the market as long as they keep their standards I buy only them in the future...

I bought a Sanou 6" chuck, & found that it had a bit of grit in the works. After disassembly, cleaning, & especially DEBURRING; it now works as smooth as a Swiss watch ! *I've purchased a LOT of Chinesium over the years, & find that far more often than not, taking the edge off sharp parts 'seems' to be a method of cost cutting !? So often parts 'look' good from appearance, but are rather poorly crafted overall - mere attention to detail makes a major difference between 'good enough', & 'most EXCELLENT !' ;) I would trust home made transfer screws vs the rough nature of factory made set screws, as you can control the concentricity ! Another method to transfer centers for the bolts, would be to use 'ground centers' on hardened grub screws; putting the screws in BACKWARDS. . . with the ground 'points' facing up. . . then, instead of hitting the back to 'seat' the points. . .'PRESS, or CLAMP the whole assembly. . . that would ensure near perfection ! ( of course, perfection depends on the class of fit of the grub screw / setscrew thread tolerance) * I've been a long time sub, but have rarely commented - 'Love your content , thanks for sharing :)

Thanks for another great video Steve. I really appreciate your time spent helping others. Looking through your videos I can't seem to find one that shows how to figure out how to put the holes around the edge of the backing plate to make it into an indexing plate. I don't mean how you use your drilling jig to drill the actual holes, I mean how do you index the lathe spindle before drilling the holes? If someone doesn't already have a drilled backplate from Myford how would you go about creating the indexing system? What would you use for indexing...a 24 tooth gear perhaps? Thanks for any help you may provide. Tom

You could tweak the grubscrew transfer method a little by using "cone point" type grub screw's. Thanks for sharing Steve.

Hi Steve. Another great informative video. Can you tell us about the tool you used in the gears when changing the jaw chuck at the very start of this video? Thank you.

5 inches boss,how many watts are you using?

steve.. are all myford lathes the same as regards the head stock spindle 12 tpi ? as i have to aquire back plates for my 5" & 4" chucks.. please reply as i have a job standing.. sincerly yours laurence

Very clever using weights, on eBay you can buy 12 cast iron weights new for £40 and rough cast chuck back plates £21 for one.

have you tried the rubber coated dumbbells for lumps of cast iron the ones iv got so far have had one nice cast iron the other i could not drill they were hard as glass have you found this with the disk weights?

I've been thinking a long time of how to make a back plate for my new four jaw chuck. I thought of casting it in aluminium and then turning it, cast iron is too hot for me but it didn't feel 100 % right with Al. After much thinking, I looked in the boxes that came with my old lathe and what the heck, there was an extra back plate. Now I just have to turn a register on it and make some screw holes.

I always prefer the AVE method of transferring holes. that is take a sheet of paper and use your (probably) greasy fingers to make a rubbing and use that as a template.

nice job,steve.a pleases to watch.....

I also have to replace the chuck of my lathe. Your video is the best and most useful I have found on the net. Congratulations for the video and for the excellent explanations.

Hi Steve, many thanks for yet another excellent informative video, I shall have a go at making a backplate very soon. Can you tell me what the gadget is that you removed from the backgear area, is it a tool to lock the spindle when removing the chuck ? All the best, Brian

Do chucks need oil or grease ? Yours seems to have neither.

I'm in the market for a 3 jaw chuck. I would have liked to see you clocking different diameter work pieces to see if any run out is consistent. Thanks for your videos. Steve.

👍👍👍👍👍👍

Nice job.

Hi mate can you help me I have just got a mini lathe the 3 inch , when I got it the chuck jaws were ok as I wind them out I had a hell of a job getting the jaws to centre up one was always out is this normal ,I'm scared of undoing them now,great videos by the way

Ha ha! I d been wondering how to copy 'blind' holes without dro. Now I know. Ta!

Is there any reason not to use magnets to catch the granules and dust from cutting the cast iron?

Hi Steve, I have seen in several of your prior video's that you use HBM 125mm chuck, what your opinion on quality compared with SANOU chucks. And where did you bought the HBM chuck? In the Netherlands HBM? An outher question: how did you make your first index bckplate without having one. As you said in your video's they can be bought at Myford UK, but can you make it yourself.... .

what about the dust from this on the ways?

Nice video!

20:22 Was that a train whistle? Good idea, those barbell weghts.

Think I'd have put a dab of of white lube on the pinions both ends and a good dab on the gear part. .don't like grindy sounds revolving the scroll. But nice chuck and I too grab weights . Car axles , steering rods. Most all good steel in those.

Hermann transfer screws do a better job, available from a supplier or on ebay

Hey Steve! Why do you have both a Myford and a Chinese lathe? Which do you like better? Stay healthy.

Hello Steve. Have been wondering to buy a 4 jaw self centering chuck and noticed you have the San Ou and the HBM 125mm. Which one do you recommend? Noticed they are in the same price.

Iski kimat kya hai batao Humko kharidne hai turant

Berapasih harga chuk mesin bubut

Kimt kitna hai

Hello sir, how can i buy the New 130mm Dia SAN OU 3 Jaw Chunk & Machining Back-Plate. Kindly reply me please.

Nice one thanks for sharing. Best Wishes n Blessings. Keith Noneya

They make this same chuck with through holes. Stavros

sehr gute idee super

What is the best run out?

I've got four of these chucks and they are as bad as you can get. Massive play between the jaws and chuck soon after using it for the first time. Plainly, bad bad chuck.

Used ball bearings to transfer holes

Nice "sleeves" ! ! ! ! ! ! ! !

good tank ou

Don't need to be critical just mean to be constructive. I would never in a million years use soft aluminum is a mandrel for any purpose especially nothing heavy like cast iron. And especially not the threaded side! 2 damn soft

Why do your face and cut stop and go like that?

when i noticed the guy uses weight lifting plate. lol.