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Member postings for Mike Poole

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

Thread: Oil can (again)
19/05/2022 21:50:46

I don’t think a Reilang is really intended as a high pressure oil gun that can pump oil into nipples intended for a high pressure oiler so I am not surprised that they are not great at that job. An oil gun like the Wanner or Tecalemit can produce very high pressure compared to a Reilang or Wesco type can.

Mike

19/05/2022 16:55:34

My Wesco must be close to 50 years old now and I used to keep it full of 20/50 motor oil as it could pump oil through the rocker shafts of my Trident when reassembling the head and give a good squirt to everything that was going to wait for the oil to arrive on first startup. A Reilang is filled with 32 weight hydraulic oil for Myford general oiling but a Tecalimit oil gun does all the nipples. None of these could be claimed to be oil tight but the Reilang returns the oil that dribbles down the outside of the spout to the tank so the outside of the tank stays relatively clean to handle. My hands seem very tolerant of oils but many people are vulnerable to dermatitis and the thin membrane gloves offer protection and may be the only solution, a dusty oil can I am sure does not exist.

Mike

Thread: slipping chuck
17/05/2022 21:30:53

Do you remember if you were doing anything unusual or a non drilling activity the first time it came loose? The tapers may have collected some damage when it first came loose and no longer locks like it should, a very close examination and cleaning and then check with engineers blue to see if they still have a good match.

Mike

Thread: MEW No.316 just arrived - but what is that smell?
17/05/2022 19:11:33
Posted by Greensands on 17/05/2022 15:49:35:

Have just received my copy of MEW No..316 but have been knocked over by the smell of mag! Change of ownership, Change of printing materials? Why is it not possible to leave well alone.

Did the cat get to it first?

Mike

Thread: slipping chuck
17/05/2022 13:10:51

It could be worth doing a blue check to establish the tapers are not damaged and match each other. They should not need hammering as the taper is designed to self hold and should not need much more than a good tap to mate firmly. A job that causes vibration or side loads can loosen a taper. Is this a machine with a chuck taper as the spindle nose or a chuck mounted on an arbor to fit a morse taper spindle? Is the taper that comes loose the one in the body of the chuck or the arbor to spindle taper?

Mike

Thread: Drill bit storage
16/05/2022 17:48:30

Sets of drill are widely available that go in 0.1mm increments from 1mm to 10mm. When you take into account that you will probably want tapping sizes that give a different engagement for different materials, clearance holes for bolts and undersize holes for a reaming allowance a set can be a worthwhile investment. Some may never be used and others will be reground until they are too short and need replacing, some people have a policy of just replacing rather than resharpening and this is a personal choice. Mr Dormer would probably make me stand in a corner with a pointy hat for my sharpening efforts but they cut well enough and the size is near enough for Jazz.

Mike

Thread: Myford ML4 change gear modification
16/05/2022 08:21:57

In the event of a crash it is nice to only have to replace something cheap and easily replaced. Although Myford do not fit an actual shear pin in the leadscrew drive train there is usually a weak point that will let go first. The pin drive may well let go first on the ML1-4 and the fibre gears usually strip on the 7 series. Although the fibre gears may not have been designed as the drive train protection it is useful that they do fail before anything else. Some people claim that the quadrant for the drive train should be not tightened too much so under an overload condition it will move and unmesh the gears, I would think trying to judge this could result in an unexpected disengagement that will ruin the job. The fibre gears do make an expensive shear pin compared to the simple pin drive on the ML1-4 series.
Mike

Thread: Code of Conduct
12/05/2022 18:31:34

A trip to our stores as an apprentice was likely to result in being enveloped in a cloud of French chalk or a soaking, there would be trouble these days. The world seems to have had a very successful sense of humour bypass.

Mike

11/05/2022 17:52:12

Flange, growler.

Mike

11/05/2022 09:06:50
Posted by Martin Connelly on 11/05/2022 07:55:08:

You've got to know the offensive words that are being alluded to for alternative words to be recognised as such in the first place. Banning their use seems like backwards logic in what is clearly meant to be an amusing and witty advert, It's a bit like the non-story that made it into the news recently about a rude word on Countdown. If you are wondering what the rude word was it was pricks. A perfectly normal English word with no surrounding context to make it rude or not. Once again you can only claim to take offence if you know there are alternative meanings to it and it has context to show how it is being used. Look out Scunthorpe, you're next for the "I am offended by this word" gang.

Martin C

I always thought prick out was a gardening term but context is everything.

Mike

11/05/2022 08:31:45

Before the World Wide Web arrived the slogan “If Typhoo put the T in BriTain who put the **** in Scunthorpe “ was often seen scrawled in various places, I think I first saw it on the graffiti wall in the gents of the Chequers on the High in Oxford.

Mike

Thread: Ball bearing cups for bicycle hubs ?
10/05/2022 06:37:39

The wear marks on these cups usually show a thin line so the curve of the race does not match the ball. The commercial items would seem to be ground after hardening but getting the hardening right is probably the most important thing as if too soft the Brinelling effect will occur and the bearing will be rough. Steering head races where this has occurred are scrap as it ruins the steering. A fine turned finish without any chatter is essential but the long cutting edge of a form tool can make this a challenge.

Mike

Thread: Easy power tailstock feed for your lathe
09/05/2022 20:48:56

I watched this video a couple of days ago by Stefan Gotteswinter describing his use of a toolpost mounted drill chuck and how it is very practical for speed of working.Toolpost Drilling

Mike

Thread: A tyro desoldering question.
08/05/2022 10:22:15

The switch can certainly be removed with soderwick, I have found that it can be useful to add fresh solder if the wick does not remove all the solder. It would be worth getting the feel for using soderwick on some scrap boards before getting into trouble on the board you need to use. It would be worth verifying the configuration of the switch before it’s possible destruction by the desoldering operation. It looks most likely to be a double pole changeover DPCO switch.

Mike

Edited By Mike Poole on 08/05/2022 10:26:05

Edited By Mike Poole on 08/05/2022 10:27:26

Thread: Socket set sizes
07/05/2022 20:18:25

1/4 Whit head size is .445” , 7/16 AF is .4373” and 11mm AF is .433”. They can often fit each other if the tolerance on socket and nut are not too tight.

Mike

Thread: Crates to transport Meddings MF4/5 ?
07/05/2022 09:54:15

I have moved an MF4 mk3 twice, the first time in one piece with help to load but unload was a solo effort. Very top heavy and great potential for disaster. The second time was to collect a damaged machine but the prize was the table with cranking mechanism. As I was on my own with this one I dismantled it into the head minus motor, the table,the foot and the column. If the weight is not a problem the table and head can be lowered down the column as far as possible and the machine fixed to a stout pallet, the column will stick out the top though. I think I would go for a two pallet crate solution with the head in one and the table, foot and motor in another. I would remove all the handles and the star wheel as these are always vulnerable and lock the quill. The sheet steel belt cover is easy to damage and may be worth removing. Due to the weight of the components they will need very secure fixing to prevent breaking loose if roughly handled. I think I would band some battens to protect the column from any dings and stop it rolling around. Good luck with the move.

Mike

Thread: Locomotive threading
06/05/2022 07:11:00
Posted by CHAS LIPSCOMBE on 05/05/2022 23:06:48:

From Jason's chart, I see that 1BA is something of an "orphan" thread with no clear alternative. A nuisance because it was used extensively by Amal carburetters for their motorcycle handlebar levers and ealy carbs. Does anyone know of a closer equivalent. than the ones shown in Jason's list?

1BA taps and dies are widely available in the UK but probably harder to find and expensive in the rest of the world. Unless you are making both parts then it’s probably best to stick with 1BA if possible. Using non standard sizes will be setting a trap for anyone who has to work on the machine in the future.

Mike

Thread: Which beginners lathe is best
05/05/2022 09:26:35

I would not really call any lathe a beginners lathe as the operation and the skills required are broadly common to all lathes. The so called “Training” lathe is a simple plain lathe without screw cutting or self acting feeds, these are rare but I would avoid buying one if you should find one. The various machines described as mini lathes are popular as they are affordable and capable of good work and the skills are transferable to other lathes. If you have some idea of what work you are likely to be interested in then this can be a factor in selecting a large or small machine. Larger scale models can need large machines to handle components like wheels and flywheels. To an extent small work can be done on a large lathe but large work will not be possible on a small lathe. Two fit people can manhandle a small lathe like a Myford or mini lathe but larger machines need more care and equipment to install safely. I would say be prepared to upgrade if you choose a small lathe and then your interests roam into larger work. Emco machines have a good reputation but are not so common as other makes. Used machines can often be sold on without losing much money and even the depreciation on a new machine is not usually very severe if you find that a machining hobby is not for you or you want to upgrade.

Mike

Thread: Emergency Radio Format
03/05/2022 22:21:49

Your first post was 4036 days ago so 4-5 posts a day Michael.

Mike

Thread: making spindle bearings
03/05/2022 11:05:05

I once had a Sugden Connoisseur turntable which had a very simple but finely machined shaft and plain bearing, the shaft had a very fine ground finish and the brass or bronze bearing was a smooth running fit, in the bottom of the bush was a ball bearing that took the weight of the platen and provided a single point low friction bearing. By all accounts it was a well regarded concept and gave good results. The finish of silver steel is decidedly rough compared to the finish of the Sugden spindle.

Mike

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