Here is a list of all the postings Dave Wootton has made in our forums. Click on a thread name to jump to the thread.
|Thread: complete engineers workshop|
Sorry to hear of your loss, I have had to clear a workshop and we used Lathes.co.uk , Tony Griffiths who runs the site is very knowlegeable and helpful. In this case there were a number of specialist clockmaking machines and tools, out of my sphere of knowledge. We sent a number of decent photo's and he catalogued and valued them and wrote the adverts. There is a one off charge for major items and reduced charges for smaller items, it all sold quickly and with no fuss or time wasters. You do need to telephone him to tell him the pictures are on their way as he does miss emails sometimes.
We had previously tried ebay which was a disaster , full of time waters and scammers, some of our adverts were copied and relisted before the end of the auction!
|Thread: ML7 oiling advice|
+1 for the press parts oiler, works perfectly. I made an extended adapter with a PTFE insert to fit the myford nipples which improves the seal and acessibility.The Myfords long gone but I kept the oiler, now adapted to fit the mill.
|Thread: Number stamps quality.|
I've got some sets of Pryor letter and number stamps some quite old, none of them can be relied on when using any sort of jig for stamping. I did some feed dials using a GHT pillartool and had to use shims glued on to the stamps to get them to line up nicely, Likewise when using a straightedge to try and get a nice straight line of stampings. GHT mentions this problem in his write up on the pillartool, so it's not only the cheapies that are a bit out of register.
|Thread: Warco A1s or Denford equivalent|
I've got an A1-S, the version sold by Myford and have found it to be a good machine, I only bought it as a stop gap when I had to move and sold my Bridgeport, It takes the R8 tooling ,I still have it 8 years later so a obviously quite happy with it! The speed range as supplied is a bit odd with a few gaps in it, but this is easily cured with a 3 phase motor and inverter. Mine was metric and a cheap Chinese ( Sino) DRO has proved excellent.
At one time I briefly worked for a company that imported and sold these under the RMT name, this was the very early 80's, I remember being quite impressed at the time and thinking they were a reasonable size for model engineering. I have seen the same machine badged as Elliott, Warco, Alpine, RMT, Myford, DST and I'm sure there are many more. The firm I worked for checked theirs very carefully and there were a few with alignment problems with the rotating base for the milling head, these were rectified by scraping true before despatch. I do believe these were made to the same basic design by different factories in Taiwan. The ones we got were made in the works that made Bridgeport copies under the Condor name and were of a very reasonable standard. The standard of pre delivery inspection would obviously have a bearing on which would the better choice, Denford being a major manufacturer would one hopes check machines thoroughly before despatch, the part about fitting quality bearings looks promising and would seem to cover both suppliers.
Provided the machine is in good condition I don't think you would be disappointed with its performance or capacity.
Hope this helps, you can always pm me if I can be of help.
Edited By Dave Wootton on 25/02/2022 14:05:35
Edited By Dave Wootton on 25/02/2022 14:06:54
|Thread: Myford Super 7|
I would second Lathes.co.uk, used it to clear a friends workshop a few years ago that had quite specialised clockmaking equipment in it. Just sent some good photo's and Tony who runs the site identified everything ,wrote the description and valued it. It all sold quickly and without any fuss or time wasters. I used it myself to sell a Myford last year and that sold very quickly.
I tried to sell a mill on ebay once and that proved to be a disaster due to time wasters and scammers, never again.
|Thread: Songs about Engineering|
Turn, Turn,Turn by the Byrds?
What's the matter with the mill? by Memphis Minnie ( obviously having speed controller difficulties)
I'll get my coat!
Edited By Dave Wootton on 23/02/2022 11:28:40
|Thread: How to make this?|
Looking back I do wonder how we survived, letting 16 year old idiots loose on powerful barely guarded machinery, I don't remember many people wearing safety glasses unless grinding, and then not many. The plating shop resembled something out of a Hammer horror film, foul smelling vats of who knows what bubbling menacingly. As for the heat treatment shop I was told " careful with this it's cyanide, the antidote is up there but it's worse than the cyanide!" Basil the chap in charge used to sit near the tratment ovens to eat his sandwiches in the winter months. All this at a firm that boasted of being state of the art and at the forefront of Harold Wilsons white heat of technology.
Very handy for motorcycle mad teenagers though, I had a very shiny Triton, not sure how I survived that either.
Edited By Dave Wootton on 22/02/2022 13:46:10
Edited By Dave Wootton on 22/02/2022 13:48:15
I can remember at the firm I trained at there was a polishing and plating shop, the tapered ends for the polishing machines were re threaded regularly when they wore. I never tried it ,the job was left to one of the old hands, a superb craftsman, he rethreaded them by manipulating the cross slide with the leadscrew engaged, I'm sure that he did as Hopper suggests started at the large end.
The polishing machines were very scary , with something like 3hp motors,I used to sneak in and use them to polish bits of motorcycle until I managed to fire a primary chaincase across the shop as it was caught by the wheel. another telling off and banishment from the polishing shop!
|Thread: Making a Carriage stop for a lathe|
I think I misunderstood your requirement for the carriage stop in that I use mine more as a means of machining to length accurately than as a safety feature. Although I do use it as a safety feature on occasions, typically when working very close to the chuck.
I served a very old fashioned apprenticeship where doing something daft on a machine had a twofold danger, the initial disaster immediately followed by a clump round the earhole!
I haven't got any clever ideas for turning the machine off to prevent a crash, although I have used lathes that had a microswitch arranged to cut the power if the carriage reached the headstock ( Smallpiece Cromwell S800).
But I do use carriage stops all the time, and so far have not had any disasters, I attach a picture of a simple adjustable carriage stop I made when I had an ML7-R , the stop rod is locked by GHT Thomas's pet split clamp arrangement which will slip if it all goes wrong. I made two of these, one for a friends S7 who being quite new to the hobby was worried about a jam up and damaging the fibre feed gears. The stop rod in the one shown is 5/16" diameter , but for my friends the rod was made 3/8" diameter and drilled to take a smaller rod ( 9/32" from memory) so that this rod could telescope into the larger rod, It was cross pinned with a brass shear pin, again from memory 3/32", so in case of a disaster the shear pin would break allowing the stop to telescope and prevent damage. The size of sacrificial shear pin was entirely empirical, we started with 1/16" which sheared too easily and 3/32" seemed about right. My friend tells me it has been tested twiceand has worked!
I have not got a photo of the shear pin one, but attach one of the version on my machine, it required careful positioning to avoid the back gear lever. Obviously this is for a non gearbox machine, but the shear pin principle can be adapted to many other stop designs. Hope this gives a few ideas.
|Thread: Crank handle method and sequence|
Full write up on ball handle's in Geo H Thomas's Model Engineers workshop book, still available from Tee publishing. Much else besides in there , essential reading.
|Thread: I am getting shorter - how about you.|
I'm getting wider as I get shorter too, I tell my wife it's just settlement!
|Thread: Read the T-shirt|
Nothing to do with M.E but my favourite T shirt was bought for me by a fellow band member ,an unenlightened saxophonist it read.
" When I was a kid I wanted to play the trumpet really badly.... and now I can"
Wore it to shreds
|Thread: Locomotive Transport|
some years ago I worked as a mobile engineer for a company that made large refrigeration machinery, we all had Mondeo estates and for the mechanical guys the back luggage area was full of heavy tools, vacuum pumps, refrigerant reclaim units. One of our engineers had a head on collision caused by an idiot coming the other way overtaking on the brow of a hill.The tools in the back broke the catches on the rear fold down seats and burst forward, he was injured not by the impact of the other car (air bag worked) but by being hit on the head by a flying vacuum pump. Fortunately not too seriously, but if there had been a front seat passenger they would have been hit with a heavy casting that wrecked the dashboard on the passenger side.
The short term answer was we were required to fasten the rear seat belts acreoss the rear seats, and remove all our equipment before using it as a private car with the family in it, which was a pain. Long term a fixed barrier cage was installed, like a dog guard, which then prevented folding down the rear seats. the point of the waffle above is that unless restrained something like a loco can become a projectile in an accident, and you can't rely on rear seats to contain it safely.
Edited By Dave Wootton on 31/01/2022 07:42:30
|Thread: Anybody else remember Chuck the Muddle engineer?|
There was a large pile of old M.E's at my school we could read I used to particularly enjoy Chuck and LBSC.
The Chuck cartoons were very well observed, A few stick in the mind such as the machined from solid boiler - with nowhere to put the water in and the petrol saving device that saved 20%, Chuck bought and fitted six, went for a drive and his fuel tank was overflowing at the end, all good lighthearted stuff
Terry Aspin was a very gifted artist , foundryman and all round model engineer.
|Thread: How to keep Paint Fresh?|
It's possible to buy small empty paint tins from ebay, I've bought large tins of machinery enamel and decanted it into 25ml tins, seems to be keeping very well and no skin on the (full) one I opened recently that's been decanted but not opened after for around four years. I make sure its very well stirred before decanting to avoid colour differences . I'm thinking of doing the same for my loco as I was not very impressed with my last tin of very expensive model paint.
I usually filter paint before use, disposable filter papers are again available online.
|Thread: Small MT2 Tailstock Chuck for ML7|
Another +1 for the Arc sensitive chuck, find it invaluable and seem not to have broken so many tiny drills since purchase! Previously used an Arrand one that fitted on the tailstock dieholder set, not such a sensitive feel as the Arc for really small drills.
Just done a few oil jets for sight glasses at No 78 drill with no casualties.
Edited By Dave Wootton on 27/01/2022 16:21:51
|Thread: Rust Protection|
Had a google Farnell do a panel heater a bit like the one I mentioned above for £22 ish but TLC electrical do a 250mm long low watt tubular heater for £16 odd, which seems quite reasonable, The ones like we used at work all seem a bit pricey
I don't know where to purchase them but some of the switchgear we used to make was fitted with very neat low wattage 240v panel heaters in the control compartment to prevent condensation ( was used outside). About 159mm long looking like a finned resistor with a heat shield, I think they were about 40W connected via a thermostat and would be ideal, all the connections and very hot bits being safely enclosed. Never took much notice I'm afraid , was more on the HV side of things, they just used to appear from the stores, but must be available.
Should have taken some as part of my redundancy package, could do with them now!
It is possible to get low wattage tubular heaters which could be fitted under a metal lathe cabinet top or similar, seem to remember some about 250mm long and 40w ish.
Edited By Dave Wootton on 27/01/2022 12:28:46
|Thread: Identity please|
Absolute guess but could it be an early open drive refrigeration compressor?
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