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Member postings for john pickens

Here is a list of all the postings john pickens has made in our forums. Click on a thread name to jump to the thread.

Thread: Centec milling machine 'x' table backlash
03/11/2015 20:55:34

Hi,

Can anyone suggest where I could have an original worn leadscrew thread refurbished or remade. My lathe machine is to small to accept the length and bore through spindle to remake a new one.

Currently the worst of the backlash is central and being around 60" to 70" thou.is far to much play. The half nut appears to be ok.

I would welcome any suggestions thank you.

John

Thread: ML10 Top slide base
16/01/2015 20:39:29

Hi Nick,

I wish I could but I don't think it is an easy task for me as I have insufficient tooling to undertake it and only being a novice I lack the know how.

John.

16/01/2015 17:15:39

Hi all,

Regarding my last posts on the above subject I am reaching out to anyone who has a Top slide base for a late ML10 that is willing to sell on to me.

The one that is required is for fitting to the long cross slide that has a 35mm diameter hole. (is almost like the type that is used on the Super 7,but this is to large)

It would be very much appreciated if I could find one as all my searches are now exhausted.

The photo is of the early version which I already have,but this will not fit on my long cross slide.

Johnswivel base for top slide

Thread: ML10 modifications
09/01/2015 14:19:08

Just checked the measurements.

Top dovetail for my top slide is 37.5mm base is 28mm.

My cross slide bore is 35.0mm.

My height from top of cross slide to top of top slide base is 21.5mm.

Thank you for your input anyway, at least I now know that the Super 7 top slide base is not compatible and so the search for the correct one continues.

John.

09/01/2015 12:46:10

Thank you for this info ,much appreciated.

Will let you know asap.

John

PS do you prefer Robbo or Phil?

08/01/2015 20:25:02

Hi Norman,

I do like the idea of a tumbler reverse and you appear to have made an excellent and neat job of yours.

Also the leadscrew clutch is a must and I was fortunate enough to have one already fitted on mine when I purchased it some years ago.( Wouldn't be without it )

John.

08/01/2015 20:18:57

Hi Jim,

Glad you like it so far.

The ball handle on the saddle had to go I'm afraid,but then these machines were made at a lower budget years ago to make them more affordable and they do offer potential to bring them up to ones own standard,do they not.

I do agree with you on the height change using the Super 7 swivel base but then it could be possible that the ML10 top slide may just be smaller in height than the Super 7.I really need to find this information.

John.

08/01/2015 16:04:29

DRO unit fitting to cross slide rearMounting for carriage & cross slide DRO unitMounting for carriage DRO unitTailstock DRO unit diplayx y Axis carriage DRO unit 2Cross slide DRO unit 3Sensor mounting 5New link beltCross slide DRO unit 2Cross slide DRO unitx y Axis carriage DRO unitTailstock DRO unitSensor mounting 4Digital rev. counter working 2Digital rev. counter workingSensor mounting 3Sensor mounting 2Digital rev. counter sensor mountingDigital rev. counterAs promised some photos of the finished mods on my ML10 lathe so far.

John.Newton Tesla variable speed controller

08/01/2015 12:54:16

Would anybody be willing to let me have the dimensions of the swivel base which holds the top slide to the cross slide on a Super 7 for me to compare whether it will fit my ML10 please.

John.

08/01/2015 12:49:22

Hi Jim,

Thank you for your input and I agree with you entirely.

I am awaiting a reply from RDG Myfords on the subject,but thought it might be wise to seek some advice on the forum.

I will post a thread when I get a definite answer to this problem.

John.

08/01/2015 09:15:42

I hope these pictures help.

Dimension of long cross slide (left) is 9 7/16" x 3 1/4" with a 1 3/8" hole.

Dimension of short cross slide (right) is 7 1/8" x 3" with 13/16" hole

Notice there are no tapped holes in the side of the short cross slide for the thrust pads as they are in the top slide swivel base which shows where the thrust pads contact the smaller holes in the short post protruding through the cross slide.

So the problem is that I need to source the correct swivel base in order to fit the long cross slide.

John

08/01/2015 09:04:20

Hi Robbo,

The long cross slide does fit the the swivel base,I've tried it.

I think pictures paint thousand words.cross slide

07/01/2015 14:31:59

Hi Trev,

Yes if you look at the Speed 10 particularly the side of the cross slide you can see a square headed adjuster which acts on thrust pads on both sides which in turn act on the machined part of the base I think.

John

07/01/2015 12:54:44

Hi Trev,

Yes the long cross slide is a lot more versatile in many ways,however the cross slide I was given which is an older version than the new ones you can buy from RDG Myford ,differs in the fact that the mounting hole is larger,very much like the Super 7 but the top slide on my machine will not fit the Super 7 base.

I understand that the later ML10 diamond 10 has the long cross slide so I would imagine that the base fitting on this machine would be the one that I need but again the difficulty is sourcing one.

John

07/01/2015 11:08:19

Hi all,

Firstly Happy New Year to you all.

Has been a while since I last posted a thread,but regarding the mods on my ML10 lathe am pleased to say that things are looking good.The Newton Tesla variable speed controller conversion is now in place and what a difference,I'm so glad I took the advice offered.Superb control throughout its range,plenty of torque,smooth running,jog mode great.The company (Newton Tesla) who are very close to home were so helpful on my visit and gave me a full demonstration of the unit,I was sold after that.I was able to claw some funding back by selling the original motor on to a very satisfied person so all in all a good deal was had.

Other projects which are ongoing for the lathe are time consuming but pleasing and at completion are three DRO units which have been produced with a lot of help through an engineering friend.

They consist of a tail stock unit,cross slide unit and an 'x' 'y' carriage unit.

I will post some photos asap.

I have a problem which hopefully can be sorted on the forum.

I was very kindly given a long cross slide for the ML10 which also had the gib strip included and no feedscrew,not a problem as they are still obtainable.It is the base unit which is used to hold the top slide which is very similar to the Super 7 which I cannot source.My set up at the moment is the short cross slide with the large countersunk hole with a countersunk short arbor which attaches the top slide base.To change over to the long cross slide is not possible on this set up.Can anybody shed some light.

John

27/08/2014 22:56:09

Hi guys,

I would like to thank all of you for your responses to my post and will let you know how I get on with this mod.

Hope to keep in touch with other projects and help.

It's great to see so many enthusiastic people out there with great ideas.

John.

26/08/2014 15:38:32

Hello,

My name is John,64 years old and am looking for advice on my new hobby.

I have purchased a Myford ML10 lathe and am considering a way round to fitting a clutch unit from an ML7 lathe with some modification,but I am now sold on the idea of using a 3 phase motor together with an inverter so that I am able to attain variable speed control as opposed to the 6 designated speeds that are present now and also eliminates belt changing. Does anyone have suggestions as to whether this is a good option or not.

I'm hoping to kit this lathe out in the near future with some home made mods. which I have in mind in order to make the lathe better equipped.

I realise that I have a lot to learn in terms of metal turning and will in no way become a professional in my lifetime but I am happy to plod along and enjoy this wonderful hobby and learn from others of more experience.

Any advice would help.

John.

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