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Member postings for Alan Jackson

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

Thread: Vickers Bl 8 inch Howitzer cannon of 1917
22/01/2020 09:58:01

Wonderful workmanship

Alan

Thread: Merry Christmas Everybody!
25/12/2019 11:57:30

Happy Christmas to all

Thread: Bantam - warped compound gib
11/11/2019 09:45:29

I think its made from cast iron so you would probably snap it if you try to bend it.

Alan

Thread: new computer
03/11/2019 16:36:25

I am happy with a ex business Dell T1700. It came with Win 10 professional and I have added a 500 gb ssd. Check out them on ebay lots to choose

Alan

Thread: V-belt vibration in Ajax AJ8 horizontal milling machine
01/11/2019 16:26:59

p1040430.jpgp1030684.jpgI had an Ajax mill like yours and rebuilt it. The existing pulley had lumps broken from it by the previous owner so I machined the pulley down for polyvee belts. I also repositioned the vertical feed shaft so that it could be fitted with a handwheel.

p1030674.jpg

Edited By Alan Jackson on 01/11/2019 16:29:37

Thread: What's this please?
01/11/2019 16:21:15

It is part of a dial indicator mounting. The dial extended bar fits in the knurled clamp so that it reverses the movement for say centering bores on a lathe.

Alan

Thread: MIDLANDS MODEL ENGINEERING EXHIBITION
23/10/2019 10:50:26

It would be interesting to know what fundamentals have changed that create the concerns and comments in this thread. Say twenty years ago these shows were well worth a visit, the exhibits from models makers prevailed and there was plenty of entries for the competitions etc. There was plenty of variety to interest all ages. Now it seems that it is just a smattering of model entries and trade exhibits, with model clubs doing there best to make a show. There was also a good follow up provided by the magazines to describe the entries to those who could not attend the exhibition. I know that a lot of this is now shown on the internet, so this must be the main reason for the shows gradual demise, sad really.

Alan

Thread: Lathe rigidity
09/09/2019 18:17:29

Hi Ian,

I have tried to understand your problem, but I still do not know why you are blaming the bearing press fits for your inaccurate and not rigidly mounted collets. It seems to me that the collets are mounted via a couple of interface points, the Morse taper and the spindle Morse taper mounting resulting in a collet positioned too far from the front bearing. This cantilever will magnify any errors present and reduce rigidity, making the bearing fits easier does not seem to be, in my mind, the solution. Simply put the collet should be mounted as close to the front bearing as possible for maximum concentricity and rigidity. If I have failed to understand the problem I apologise and I am sure it will be pointed out by others, but good luck anyway.

Alan

Thread: Tool post project
06/09/2019 11:17:00

I agree with Thaiguzzi's comments on the MLA Toolpost. Here is my version with the cutting tool within the envelope of the Topslide and Cross slide for maximum rigidity.

Alan

close to the tailstock.

new topslide.jpg

Thread: What lathes have you had?
23/07/2019 21:54:57

For years I persisted with a 1942 Keighly Lifts 4.5" lathe. Rebuilt and modified it but it was noisy and slow and would terrify me if I tried to part anything off. Next I got hold of an old Colchester Chipmaster and fixed it up to suit. It is still a fantastic machine, accurate and now quiet with a polyvee belt replacing the original toothed belt. I built a Dore Westbury a long time ago on which I did more than it was designed for but was never very rigid etc. Now the head resides on a Tom Senior M1 Mill which is also quite super. I also have my Stepperhead lathe which is also good for many unusual tasks.

Edited By Alan Jackson on 23/07/2019 22:11:21

Thread: TTFN
19/07/2019 18:02:12

Great News Andrew

Alan

18/07/2019 19:26:10

Hi Andrew,

I will also miss your very interesting posts. Such a shame that narrow minds seem to be so vocal. Enjoy your good efforts, but I will be saddened by not seeing them here.

Cheers

Alan

Thread: More mystery tools
13/07/2019 10:29:44

Wow

Thread: Unsolicited email from SOLIDWORKS
07/07/2019 10:51:48

Charles,

If you search for this on ebay there are many video teachings. This worked for me

https://www.ebay.co.uk/itm/SOLIDWORKS-2018-Video-Training-Tutorial-DVD/223473506750?hash=item34080f19be:g:C4AAAOSwo~1azhZj

Alan

Thread: Myford Super 7 Top Slide Base - Alternatives?
26/06/2019 17:37:11

How about converting it to a Lever locking topslide?

pict0009.jpg

Alan

Thread: Colchester Lathe Factory
31/05/2019 11:07:01

I visited the factory as an apprentice in about 1957, so this video reminds me of that visit. I think the whole factory was very proud of the machines they produced. Here is a photo of my Chipmaster, still going well.

I have rebuilt this old lathe and I think it now runs nearly as good as it ever did. Replaced the speed variator with an inverter, modified the cross slide and added a new lever locking top slide, plus the capstan feed tailstockall cleaned up.jpg

Alan

30/05/2019 11:54:37

I have just seen this on youtube

https://www.youtube.com/watch?v=nQaAKUAzK0w

Alan

Thread: Chernobyl TV Series
29/05/2019 17:52:49

I think that Russia pressganged people from the Baltic states to do some of the work

Alan

Thread: What a brilliant young man
19/04/2019 11:36:34

Just look at this

**LINK**

Alan

Thread: Lathe controls position
18/04/2019 12:25:44

JasonB

"Good idea with all those uncovered belts and pulleys down the other endwink 2"

Only one belt, and it could have a belt guard but that would deny the easy use of the large pulley being used for many applications like holding the spindle for collet locking/unlocking, Threading etc. I much prefer the open arrangement, but it is up to the operator/constructor to do what they want. What about that rotating chuck as well?

Alan

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