Here is a list of all the postings Ian Lee has made in our forums. Click on a thread name to jump to the thread.
|Thread: .225 dia x 40 tpi die|
|Clive, It is the multiple aperture sights I am replacing with 5 seperate sights. The rifle is my friends lee Enfield Mk1. The thread is definately .225. I have checked it against a similar sight. The reason for seperate sights is that the larger multiple sight fouls the top of an early telescopic sight mount. The problem is the fact that 7/32 thread is too loose and is not repeatably accurate. My freind is quite fastidious as he is a very good shot (65th out of 1500 at the last Bisley event)|
Thanks for the info, 7/32 x 40 whitworth thread form is now ME thread, and I thought it may be the case that over the years of manufacture the diameter altered, I only need a 7/32 die to open about 5 or 6 thou as 7/32 is .2187 dia.
Can anyone help me, I am restoring and re making some aperture rifle sights for an old (1895) Enfield rifle, The original sight was made by Parker Hale, The thread I need to cut is .225 diameter x 40 TPI. The threaded spigot is 1/4" long, I have tried to open up a 7/32 ME die and close up a 1/4 ME dia but can't get a correct fit in the sight mounting.
I wondered of anyone has come across this problem. I could screw cut it but there is not much room, as I am making a number of these with different sized apertures it would be quicker and easier if I had a die or a 40tpi thread chaser.
Edited By Ian Lee on 04/01/2017 22:21:15
|Thread: Scale narrow gauge locomotive|
It will be electrically driven as the boiler cost is to expensive even if I make it myself, I am in a lucky position in that one of my close freinds is a pattern maker and another friend has a non ferrous foundry so I can getting castings made quite easily.
Thank you Geoff
I was having a senior moment when trying to work out the scale, you have confirmed what I thought, I got 1/4.8 full size. I started drawing it from my plans then realised just how big it will be, thats when the doubt crept in. Its a 262-262 wheel layout, It works out that each set of frames will be 37 inches long, overall lenght will be about 11ft. Fortunately I do have room to build it and the machining capability although it is too long to fit on our club turntable.
I am just planning the building of a narrow gauge Beyer Peacock Garratt, I have a full set of original drawings, The full size loco gauge is 2ft or 610mm, I want to scale the size to run on 5inch gauge, can anyone tell me what the scale should be, is it 1.0625 per inch ?
The drawings are for a South African Railways 2ft gauge Garratt.
|Thread: Clarke / Warco Major Milling machine drawbar self ejector|
Can anyone point me towards information / drawings for a self ejector for the drawbar on a Clarke / Warco Major milling machine please
|Thread: Gas bottles|
I have the German set which I think use the same threads, left hand for the oxy, right hand for the fuel gas. Oxy is a bit expensive at around 25 to 30 quid but the fuel gas (Mapp gas) is not very expensive. I get my gas from a variety of local suppliers, BOC depot in Bradford is only 1/4 mile from me away as is Energas, I have welded thin steel with this set and silver soldered brass, copper and steel. Some Machine Mart shops sell the bottles.There are also 3 engineers suppliers near to me also selling the cylinders.
Its worth checking any engineers suppliers near to you.
|Thread: Honywell NXL0004 2 inverter|
Thank you Neil, I see where I misunderstood the diagram I was supplied with.
I have just received a Honeywell NXL0004 2 single phase inverter. I have purchased this set up with a 1hp motor and hand control for my Myford ML7.
Everything is connected and set up, however I can't figure out where I connect in the single phase input as the setup instructions are not very clear.
Can anyone advise me please.
Edited By Ian Lee on 10/06/2014 19:34:35
|Thread: Myford ML7 or Super|
Yes I thought of an R8 Spindle but they are not quite suitable for my actual needs, Although I have never owned a Myford I do have a lot of Myford tooling including collet chucks, dividing heads etc, the rationale for using a myford spindle is that I only have a limited space availability and limited budget, my VMC design is actually universal I suppose as I have based it on the Golmatic design.
I did consider making a spindle with an ISO30 taper as I have plenty of tooling for my current vertical milling machine, however I don't any longer have access to hardening and cyclindrical grinding facilities.
I also want to use it as a basic lathe/indexing head both in the horizontal and vertical planes, I have a number of motorized attachments which are easily adapted to fit, these attachments use Myford equipment.
I decided against converting my current milling machine to cnc due to its limitations (its an AEW Viceroy), however the design of my new machine is such that I can make all of the parts on my current machinery.
Its the ML7 spindle in need as I believe they have a parrallel shoulder at the front bearing end.
Thank you for your reply
I know what the dimensions are for the spindle nose as I have made quite a few attachments for them. Its the overall dimensions I want as I want to use an actual genuine myford spindle so I won't be infringing copywright, however I don't want to go to the expense of buying a spindle if it won't fit into my head design, I'm drawing the whole machining center up in solidworks to check to see if it will work first,
I have already got a copy of the latest edition of Tubal Cains book, some of the info in the book is ok but I am a bit beyond most of it as I am an apprentice trained toolmaker / diemaker and have 45 years engineering experience, its just that I have never used a myford lathe but I have adapted most of the myford accessories to fit other machines, and I can't lay my hands on a spindle to measure it myself.
I'm building the machining center purely for my own benefit as its about time I learned CNC machiing properly.
Edited By Ian Lee on 24/01/2013 13:48:53
Has anybody got the complete dimensions for the spindle on ML7s and its derivetives, I'm just in the process of desgining a vertical machining center and want to use an ML7 spindle.
I am not making a spindle but need the overall dimensions to make sure it will fit and to machine up a spndle mount.
Any help would be much appriciated
|Thread: Bridgeprt on an inverter|
Thank you all for the useful info we will in due course connect it up to a converter although my mate is looking now at a new 3phase wind turbine, we went to look at one yesterday and they look quite promising although expensive to start with,
Again many thanks
I made an ommision on my previous posting, I want to know if a Bridgeport miller with a varispeed head will work properly on an inverter also will the suds pump and feed motor work as well or is any rewiring required
|Thread: 3 phase Bridgeport|
We have chance of buying a Bridgeport with a Vari Speed head, does anyone know if its power feed, coolant motor and main drive will run correctly without having to do any mods to its internal wiring.
|Thread: Solid Alcohol|
Fire lighters are basically solidified parrafin wax and only any good for starting fires in such things as stolen cars or domestic solid fuel heating.
Edited By Ian Lee on 26/01/2010 22:33:46
|Thread: Which Lathe|
One of the easiest ways of cutting multi start threads is to have a screwcutting indicator dial fitted. I have a Chester Crusader lathe which has one as standard, All it is is a small attachment on the side on the lathe saddle which is engaged to the lead screw, the dial on mine has 8 marks scribed on it which I mark of with a felt tipped pen to indicate each thread starting point when I cut multi start threads.
Have a look at this link for a Chester lathe costing about 1120 quid, for 2009 it now comes with a thread cutting indicator fitted.
|Thread: Digital speed control wiring|
Hi LADmachining, thanks for the link but unfortuanately its like a foriegn language to me as I'm not that good with understanding pure wiring diagrams.
I need something which goes along the lines of
From terminal 7 run a wire to pot input side, from this pot run wire to terminl#.
For some reason I don't understand the terminology or the theories shown in instructions (I think I'm not on my own).
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