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Member postings for Mexican jon

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

Thread: Bengs Kits
30/12/2019 01:34:19

Has anyone built one of these kits from Bengs? Looking at the kit it seems to be quite good and I was just curious to see what others thought.

Thread: Camlock
14/07/2019 21:19:57

Thanks for the link, but I already have a list of camlock sizes! I’m confused as all the camlocks ive seen before are either 3 or 6 pin? The one in the picture has 4 pins ?

14/07/2019 20:14:43

Can anyone identify this camlock it’s fitted to a 15” Harrison

535d4c39-9b97-4a09-92cb-f3cb22e46600.jpeg

Thread: Is society becoming more stupid
09/03/2018 02:53:53

The world gone crazy 

 

Edited By Mexican jon on 09/03/2018 02:54:33

Thread: How do you ensure the milling head is parallel with the table?
02/11/2017 23:53:20
Posted by Absolute Beginner on 02/11/2017 23:48:14:

People are not reading correctly my initial post, how do you ensure that the head is 90 degrees to the table?

 

Please explain? the above statement as I'm a little confused why you think that??

If you use a DTI on an extension arm you are proving the squareness of the head to the table?

 

Edited By Mexican jon on 02/11/2017 23:55:36

Thread: GLR Kennions "Sensitive Drilling Machine"
24/10/2017 11:04:53

I need the drawing of the stepped pulley for the spindle (quill) not the motor pulley or the jockey pulley & the drawing for the table arm, the casting that goes from the main column to the drilling table. Thanks

Edited By Mexican jon on 24/10/2017 11:05:29

24/10/2017 08:33:35

Has anyone got a copy of the drawings for the above mentioned Sensitive Drilling Machine? I've acquired 1 which is damaged.  I've ordered the replacement castings from GLR (stepped pulley & table support arm) and I really don't want to lay out for a full set of plans for just the correct dimensions for these 2 small pieces. Any help or guidance greatly appreciated.

Edited By Mexican jon on 24/10/2017 08:34:14

Thread: Motorcycle General Discussion
01/11/2015 06:16:19

Thread: Unknown Lathe
21/03/2013 05:36:19

**LINK**

Gives an insight to some repairs smiley

Thread: Pratt & Bernard chuck jaws
18/03/2013 08:26:07
Posted by Chris Trice on 18/03/2013 06:54:40:
Try Rotagrip. They stock the older 'imperial' jaws as well as the current 'metric' ones. Yes, they are different.
Looking at that site surprise £150 for a set of jaws for a 3" chuck

18/03/2013 08:17:30
Posted by Thor on 18/03/2013 06:05:58:

Maybe you wanted "Pratt Burnerd" chuck jaws? A guick google search found their website. Have you contacted them? They may direct you to a retailer near you.

You don't say what size chuck you have, but this website lists top jaws and aceesories for Pratt Burnerd chucks from 6" and larger,

Regards

Thor

embarrassed It was early surprise Yes the title should read Pratt & Burnerd, And the chuck size is 4"

Cheers Mex

18/03/2013 05:38:58

I need to find some replacement hard jaws for a 4" 3 jaw Pratt & Bernard, Does anyone know of a sensibly priced place?

Thread: myford ML7 - choice of motor
14/11/2012 19:26:54

Hi Andrew

I should have worded that better blushyes it could be run but would give out slightly less than half of it's rated power and if you want to control the speed reliably you are still going to need a VFD so you may as well change the motor ?

Regards Jon

14/11/2012 15:34:44

Dave

The motor that you have is a conventional 3 phase motor, so it cannot be run from a 1 phase to 3 phase VFD. 230v 3 phase is the european standard and is very common place in this country in control situations. As you have mentioned you are a sparky so just think about Ohms law for the power output of the motor 3 phase 440v will be less current than 1 phase 220v, but you could still have the same output power (well almost exactly the same) Being a sparky I would look about for a secondhand motor and a secondhand VFD and wire it up yourself, buy a small ABs box for the fwd/rev switch and the speed pot I just picked a new WEG industrial 1HP motor dual voltage still in its box for £50. Looking on ebay VFD's come up for less than £100 so to my way of thinking that would be the way to go.

Regards Jon

14/11/2012 05:28:46

Hi Dave

First thing to check is the motor you already have if the I.D. plate lists the motor as dual voltage i.e. 3 phase 220/440 then things are looking good as you will be able to run the motor of a 1 phase 220v to 3 phase 220 VFD If your motor is 3 phase 440 only then I would look at changing the motor out for a 3 phase 220 motor with a VFD (drives direct do a complete package ready to bolt on to a myford) this will give you the best of both worlds, infinate speed variations and reversing at the flick of a switch. The other advantage with a lot of VFD's is they come with a digital display on them so you can use this as a speed ref.

Regards Jon

Thread: cutting thin sheet
11/11/2012 19:02:57

If I was doing it I'd clamp the sheet between two pieces of ply, drill the holes and then clamp through the holes and then use a fret saw to cut the shape out. Possibly finishing the edges with a little bit of filing / sanding.

Regards Mex

Thread: Quorn or Vertex cutter grinder ?
10/11/2012 04:58:36

I managed to pick a Quorn up a couple of years ago, It was in a second hand shop (from the estate of deceased engineer) £160 is all i paid for it as the shop keeper didn't have a clue what it was. My thinking was that'll get used loads, well it still sits in my tooling cupboard where i put it when i got home. The reason for this is as some others have said with indexable tooling and throw away tips and the general price of replacement cutters these days it's easier to just get new, and use the time it would have taken to sharpen the blunt tooling to carry on machining, building or reading the latest posts on the forum.

Regards Mex

Thread: Gear cutting by machine and hand
24/09/2012 21:31:11
Posted by Stub Mandrel on 24/09/2012 20:44:07:

If its as small as the grain in the paper suggests, very good, although the teeth may be a little thin.

Neil

It is quite small 10mm total depth shank is 8mm and the gear is a fraction over 17mm, I didn't have the correct gear cutter at the timeso i had to improvise!(slitting saw and various files) It's only for the steering on a large scale vintage boat. I tried running it with the damaged gear whilst it was in the lathe it all seems ok and at reasonably high speed. I think this will be 360 degree turn and back at most so can't see a problem. I've now picked up more gear cutters so will make another, but I was just wondering what people thought as it was my first attempted at gear cutting

Regards Mexican Jon

24/09/2012 19:18:05

A gear I made by machine and hand profiling, not the best pictures. But what do ya think.

img_0596.jpg
img_0599.jpg

Edited By David Clark 1 on 25/09/2012 09:50:12

Thread: MT2 x 1" arbor question
04/08/2012 22:45:14

Oops

Never thought this would get of hand !!

All I was asking or thinking was that if I had a long MT2 arbor which was supported by the tail stock (considering this will be a set up on a myford with a myford dividing head, cutter held on the arbor)sorry if i didn't mention this before)) that is would be more versatile and better than a stub arbor. As for marking one, yes i agree it would be nice to make my own but as others have said would it be economical. Any ways sorry if I caused an argument I was just looking for opinions to whether my way of thinking was right wrong or indifferent.

Regards Mex

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