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Member postings for Mike Hurley

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

Thread: That Strange Calculator Again
17/01/2022 12:23:04

Suddenly thought I could probably do screen grabs to illustrate all my earlier waffling!

calc01.jpgcalc02.jpgcalc03.jpg

17/01/2022 12:06:34

Relating to Dave's observation posted 15/1 - "The inner ring holes are all dimples, except the video shows one of them, No 30 under the spring clip in the photo, to be a through hole that sometimes aligns with another hole inside".

This thing continues to intrigue me as it does many of you. If you download the video clip and then stick it into an editor, you can both enlarge and step through it. I agree with Dave that one anomoly is the ' 30 ' detent position on the inner wheel which as he says is a through hole unlike all the other dimples. For the first few seconds of the video this hole seems to have a 'blank' under it, grey, same colour as the main body. As it approaches half way this suddenly changes to a distinct line across the middle ( it's in a different orientation to the line notepad underneath ) it seems quite clear and definate i.e. not a scratch. A bit longer on it suddenly goes black ( quite sharp - i.e. its not a shadow ), then returns to the ' line ' then to the grey ' blank '.

So my thoughts are that there are markings on the back plate that are positioned to show as described when there are specific conjunctions between the outer dial and inner one. Like for example the ' line ' is a prior warning indicator during rotations ( nearly there.... ) and the black indication = spot on! Just a wild guess though!

Unfortunately without knowing the logical behind the rotations the guy is doing it's impossible to relate these events to positions of the dials very easily in such a short time. However, I just thought my observations might be of interest.

regards Mike

Thread: drill sharpening jig or dedicated tool
10/01/2022 10:01:28
Posted by bernard towers on 09/01/2022 12:41:49:

I would imagine that if the drill bit was projecting the same amount in each jig you would be able to get 4 facets,

Hadn't thought of that! Thanks fot the suggestion, i'll give it a try & report back.

ROD: Thanks for the comments. I have seen both terms used for the same physical unit.

It's unlikely that these were used for anything other than drills (but not impossible I suppose) as I know he did a lot of small hole drilling - he'd built many fine models over the years and was half way through a model of the Agenoria when he passed away. There's an awful lot of rivet holes in that one !

Take care. All the best Mike

Thread: Lathe Tool grinding
09/01/2022 11:00:16
Posted by Nigel Graham 2 on 04/01/2022 13:41:24:

More generally, it would be worth buying Harold Hall's Tool and Cutter Sharpening. The author not explains tool-sharpening but gives a range of tool rest designs to enhance a straightforward off-hand grinder for sensibly accurate, repeatable results .

Yes an excellent book, my go-to all the time! One comment though, his basic adjustable tool rest design - I made one of these some time back and was generally pleased. One anomoly though seems to be the way the table is attached, being on a ball mount. This obviously makes it very versatile as you can move to any angle in any plane should you so wish. However, I find that the vast majority of times I want the table horizontally level with a specific vertical angle to the grinding wheel and I find it difficult with this arrangement - I get it horizontal then when trying to set the vertical angle it slips out of the horizontal and so on. I was considering changing the ball arrangement to a flat spacer that would allow the table to sit level across the grinding wheel face but still allow it to angle up/down.

Anyone done anything similar, or have thoughts on why this might be a bad idea?

regards Mike

Thread: drill sharpening jig or dedicated tool
09/01/2022 10:33:39

Re small drill sharpening - I inherited these two items from my late brother (he was a competent model engineer), and I assume they are for sharpening small drills. OK insert in V, set projection to give appropriate angle and rub on oilstone / diamond lap. Rotate 180 & repeat.

But that will only give you flat cutting edges with no relief surely? Is there a nack to doing this? I have seen articles on units such as the ' butterfly ' jig that allows you to tilt slightly to give the relief, but these do not seem to permit that easily.

Also, any obvious reason why 2 different heights?

( I meant to put a rule in the photo but forget. They are both around 20 - 25mm across )

I may be barking up the wrong tree totally, but if these are useful they would assist me greatly - so any input most gratefully received. Regards Mike

drill sharpening jigs.jpg

Edited By Mike Hurley on 09/01/2022 10:35:20

Thread: Webb Telescope
09/01/2022 10:05:14

Quite staggering! Thanks for the link to that short youtube video Michael.

regards Mike

Thread: Internet Speed ?
05/01/2022 09:39:33

I have always found it a very unresponsive website. I never understood why they haven't made efforts to get it sorted, bit annoying at times to the point where I have given up and ordered from elsewhere in the end.

I've got fast broadband that works well, so not an issue my end,

regards, Mike

Thread: Springbok completed
01/01/2022 09:32:25

excellent. A credit to your hard work.

regards Mike

Thread: Do you "still" enjoy driving?
31/12/2021 10:22:23

Many years back I had a left hand drive Triumph TR7. On odd occasions when it wasn't in the garage being fixed it was real fun to drive (compared to run of the mill cars of that era). Overtaking was a hoot - funnily enough always seemed to end up with a passenger looking ashen-faced for some odd reason.

All the best for the new year. Mike

Thread: Endless Repeats
28/12/2021 10:30:29

BBC not advertising? Regularly watch their flagship evening magazine program 'The one show', every time a 'guest' appears the wife and I look at each other and simultaneously say " Written a book " , which surprise, surprise they then spend 5 minutes spouting on about.

Thread: Hello fromlincoln
27/12/2021 10:36:25

Welcome Michael to the font of knowledge you will ever need! If you have a query, just get in the habit of using the 'search' facility (use the one half way down the 'Home' page, rather than the one at the top of the forum pages - seems to work a bit better ) and you will be amazed that pretty well anything you think of has been covered before!

If still not sure, don't be afraid to ask - there's no such thing as a stupid question, and members on this site are thoroughly helpful and patient.

I used to do a lot of woodturning years ago, and I must say metalworking lathes are a very different kettle of fish altogether. About the only applicable valuable lesson you will transfer from woodturning is the sense to keep your fingers out of the way!

I agree with Howard - get copies of the couple of lathework books he mentioned, they will be a goldmine for people like yourself

Take care, all the best Mike

Thread: New mini mill or use lathe as a mill.?
27/12/2021 10:22:06

Its really down to how you define 'light'. An occasional skim or shallow groove in easily machined material - not a problem in the lathe. If you're planning building things on a regular basis, you'll soon find the limitations irritating, Space and £ are other considerations.

Don't forget that Model engineers made numerous fine machines for many years with just a lathe.

regards. Mike

Thread: Endless Repeats
27/12/2021 10:14:46

If you spend much time watching some of the 'Freeview' channels (all us poor folk can afford) youu soon revert to appreciating the BBC as some channels are virtually unwatchable. We recently watched some repeats of 'Dr Foster' (the wifes choice, not mine I would add) on the Drama channel. It was scheduled to run from 9.00 to 10.20 pm. Originally we thought they were combining episodes to fill the slot but soon became apparent they weren't. As an exercise we put a stopwatch on the actual drama sections and discounted the adverts + coming attractions trailers.

49 Minutes! Over 1/2 hr of ****. Now I'm not naive, and realise programming has to be paid for one way or the other but this sort of percentage is a joke - and pointless, as you just mentally switch off (usually switching the sound off at the same time). Anything we specifically want to watch is recorded and adverts skipped during viewing - so what are the advertisers achieving?

OK the BBC licence tax is irritating as it is imposed on us, rather than a matter of choice - which if it was, I think I wold still pay it. The quality of their output is normally high (for example have just started watching 'Around the world in 80 days' which is IMHO is excellent so far) plus radio (listen a lot to R4 & R4extra in the workshop)

Have a happy New Year. Fingers crossed for a better one!

Thread: going carbide on a Myford
26/12/2021 10:34:38
Posted by bernard towers on 19/12/2021 19:10:11:

Try a little we 40 as a cutting lube it should stop cold welding on the tip.

Thanks Bernard - never crossed my mind but makes absolute sense. Will give it a whirl next time.

All the best, Mike

Thread: DRO's and mental agility
23/12/2021 10:07:03

Really interesting comments from you all. Thank You.

After examining the mind-numbing array of rubbish on TV over the festive season (the term rubbish does not apply the latest AArdman Shawn the Sheep film though), I think I will continue to sharpen my ever dulling brain by planning the XY conversion to the Mill in the New Year. You've convinced me!

All the best. Mike

Thread: Hello from Basingstoke
23/12/2021 10:00:57

Welcome Josh. You're in the right place here!

Have a good Christmas

Thread: Mamod Locomotive Rebuild
23/12/2021 09:59:25

I think the key word in your comments Chris was 'traditionally'. Regardless of how much people like us may appreciate the models, I have a feeling the the vast majority of young folk given a straight choice between a Mamod engine and an X-Box or Playstation the choice would be quite simple these days!

They're collectors pieces or toys for much-older-boys now! (I've got one on the shelf in my workshop).

Thread: DRO's and mental agility
22/12/2021 10:47:22

A bit of not too serious rambling (Hence why it's posted in the Tea Room), as it's too cold to go into the workshop.
Having just finished fitting a VFD to my lathe & being very impressed with the end results from this technology, my thoughts turned to DRO's for the lathe or Mill - or possibly both.
Have gone back over a multitude of postings on ideas, tips, methods & comments etc and the consensus always seems to be 'never know how I managed without them' or suchlike.
There seems to be many, many plusses and very few minuses from what I read. Started looking around for suitable units and was surprised with the range & quality on the market.
I initially thought of starting with a very simple one for my lathe cross slide - then depending on the success or otherwise, 2 or 3 axis for the mill in due course.
The crux of the matter is two - fold. Firstly, reasonably priced units (from reputable suppliers) often state accuracy figures of + or - .02 or .03mm. My x-slide calibration dial is .04 / div. now, I'm quite happy that even I - with my less than perfect abilities - could get repeatable mechanical accuracy to .01 using that alone, particularly as I am 'used to' the backlash on my machine after many years of use. So, would a DRO necessarily be the magic bullet for accuracy? (I'm not commenting on nice features like metric - imp conversion / zeroing etc)
The second point (more frivolous, but still relevant I think) is without these techno - aids, does having to rapidly calculate and compensate on the fly help keep our elderly brains more sharp? You frequently read articles about this sort of thing (brain training etc. and there seems to be some good science behind it), and it really got me thinking - is this an underlying 'benefit' of our hobby?
OK. industrial environments, CNC etc - yes, I fully understand the needs and benefits of the technology, but for a hobby, is what I've just mentioned an overlooked feature that is good for us?
Something to ponder over the Christmas period.

Have a good Christmas - fingers crossed for a better 2022.
all the best Mike.

Thread: A great Victorian BRITISH Scam!
21/12/2021 10:20:23

Ok, there was obviously a lot of dodgy wheeling and dealing going on over it's lifetime, but the way i read it was that as a concept it was a good idea but not fully thought through / engineered before rushing to try and patent it - which always seemed critical in those days.

Lets face it, have you ever bought anything that after a few uses you don't start to think - oh, it would have been better with the control knob on the left, or that receptacle could do with being a bit larger etc, etc Nothing is ever 100% perfect to suit every user. Just have to give people some credit for at least trying!

Edited By Mike Hurley on 21/12/2021 10:35:52

Thread: Mamod Locomotive Rebuild
21/12/2021 10:03:48
Posted by Martin W on 20/12/2021 11:34:00:

Just had a Google search and it would appear that Mamod is still going strong, see here, but they are not cheap to buy

Martin

Edited By Martin W on 20/12/2021 11:35:18

Is anything cheap these days? To be fair, if you look up a short video of them making these models (youtube) you can appreciate the number of processes they go through to complete, test etc so are bound to cost a few quid.

I wonder if they are still made in this country, or like everything else - the far east?

regards Mike

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