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Member postings for ronan walsh

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

Thread: 7/8" x 5 tpi acme threaded rod
07/05/2019 20:46:09

The thread is right hand, which makes things slightly easier. I would prefer to keep the same size thread as the original as the dials would be miles out otherwise. I suppose i could use a dro but was not intending to. Thanks to all for the links, i will either email or ring them over the next few days and see what i can chase up. The nut i can make up myself. Whats the best brass/bronze for that ?

06/05/2019 23:21:50

Bought a Jones and shipman 540 surface grinder recently, its old but complete and in good condition overall. However the crossfeed screw and nut are worn, which i have been told is usual, as the powerfeed "kicks" the screw when powerfeed is engaged.

They are available from jubilee mac, for nearly £600 ! So i want to make a new screw and nut. It would make life easier if i could buy the threaded rod rather than having to screwcut one.

Anyone know where i might be able to buy threaded rod in this size ?

Many thanks.

Thread: Notre Dame
16/04/2019 23:21:20

I am from Ireland, and while yes a tiny minority of the catholic church did horrific things, a huge amount of them did hard and good work in working class areas, often for very little thanks or recognition, and was one of the glues that bound society together. But as usual the majority pays for the sins/crimes of the minority. Is the bbc a paedophile organisation because of savile, harris etc ? They were getting huge salaries from the taxpayers, to produce rubbish programmes and rape youngsters.

Nearly any group who have been around for a long time has questions to answer, no more than the royal family, look back a bit at the dreadful way people who displeased them were treated during the last thousand years. The bloody tower, hanging drawing and quartering, pitch capping, the rack etc. The royals under Henry the eighth, profited hugely from the catholic church when he seized their lands and property.

No group should be free from criticism, but if you are going to sling muck, please sling it equally.

As for the cathedral, what a terrible thing to happen to such a historic and wonderful building, terrible, just as it would be if St.Pauls were to have burned during the blitz. Notre dame is owned by the republic of France, So it is their property and they are responsible for the damage repairs.

15/04/2019 23:35:53
Posted by Hopper on 15/04/2019 23:26:53:
Posted by Ian Johnson 1 on 15/04/2019 22:53:54:

I've been following this on Twitter, terrible thing to happen, but entirely preventable. I can think of three recent fires involving 'national treasures' all caused by poor fire controls during restoration.

Windsor Castle fire, Charles Rennie Macintosh Art School in Glasgow and The Cutty Sark.

Surely they must be worth protecting with better fire precautions?

And the National Motorcycle Museum at Beaulieu a few years ago. Started by a cigarette butt in a skip of air-con filters but not a sprinkler in sight.

Wasn't that the place in Birmingham, well between Birmingham and Coventry ?

Thread: V Way. regrinding
07/04/2019 15:03:07

Jubilee mac in Derby ? I know they recondition surface grinders, might be worth a phone call, or they may be able to put you onto someone who can do what you need.

Thread: Scaling dimensions
25/03/2019 21:18:00

Well it will be upscaling i will be doing most likely, i see a design for a simple steam engine, but its a bit small for my machines and i prefer larger models anyway.

25/03/2019 20:04:39

Is scaling a drawing up or down a simple matter of multiplying or dividing the given dimensions by a set figure, say 2x or 4x ?

Or is it as i suspect more involved than that ?

Thread: Jones and Shipman 540 Dripping
08/03/2019 00:46:45
Posted by Martin King 2 on 07/03/2019 19:07:48:

Jones and Shipman 540 Dripping

and there was me getting the toast and salt and pepper ready! wink my favourite as a kid!

Anyone else got some non PC foods from the past?

Martin

Black puddin' and tripe ? These soft modern types don't know the joy of a good fry-up with plenty of black and white puddin' and a load of fried bread. You might live longer by not eating food like that, but i cannot think why you would want to

thinking

Thread: Trends in Radio Ads
06/02/2019 20:47:43
Posted by Roger Provins 2 on 06/02/2019 16:22:51:

I find the most obtrusive ads are those on Classic FM - put me off listen to the programme.

Pity, as its a good station. I also like radio 4 xtra. Especially if they are doing really old stuff, Sherlock Holmes stories, Hancocks half hour, Parseley sidings, The navy lark etc. The modern stuff is too blue and too crude.

Thread: Further thoughts on Fusion 360
31/01/2019 17:05:42

Yes when i was starting fusion, i followed lars videos too. Coming from solidworks, i found some of the ways of fusion odd.

Thread: Nickel/German Silver
29/01/2019 18:49:18

The only thing i have ever heard German silver or nickle silver being used for was the famous grills on rolls royce motorcars.

Thread: Micrometer woes
27/01/2019 15:38:12

Mitutoyo tools are excellent, but their boxes are rubbish. The cream coloured boxes that their micrometers come in are extremely brittle, i have several where they have cracked or broken, leaving the tools open to damp and dirt, not good.

The felt in the micrometer boxes, is in the lid, and yes i have several that have turned to crumb rubber, leaving the mic covered in little black specks.

I also have a metric mitutoyo depth mic, that came in a nice wooden box. It was in perfect shape, but i went to use it one day and was disgusted to discover the depth rods covered in rust. I had to clean them off and some were pitted. Things like wood and felt absorb moisture and rust tools.

Someone told me mothballs in tool cases resist rust, or maybe things like vp90, as used in gunsafes and things like that.

Thread: Free Electricity
17/01/2019 12:13:17
Posted by Ian S C on 17/01/2019 11:32:43:

When I was a kid we built crystal sets, and late 50s got some OC 70 transistors, so made a simple amplifier with a single OC 70, then Dad suggested build another crystal set with broad tuning, instead of the single diode, a bridge made of 4 germanium diodes and an electrolytic capacitor across it, adjust the circuit for the greatest out put, and connect it to the radio. You need 2 good aerials. The main problem with simple radios is the headphones, in general you just can't get high impedance phones.

When I built my first (only) single valve(DAF 91) radio, what to do about HT battery. Built a power supply with a transistor oscilator, feed that through a small low voltage transformer, rectify the HT, and smooth it, and out comes the 90V that I wanted, all from a little 9V battery.

Ian S C

Edited By Ian S C on 17/01/2019 11:45:55

Yes i did that too, making crystal sets. Ladybird did a little book on it, all the bits held to a piece of pine board (pre-mdf) with brass screws (remember them) and screw cups. I believe pow's made sets using a piece of coke, which was scratched at with a wire until a signal was received.

Kids don't make things like that anymore, they sit gawping at mobile phone screens now.

Thread: Criterion boring head threads
16/01/2019 13:46:25
Posted by Tim Taylor 2 on 16/01/2019 00:20:39:
Posted by ronan walsh on 15/01/2019 22:22:09:
Posted by Tim Taylor 2 on 15/01/2019 18:53:10:

take a look here:

https://alliedmachine.cld.bz/Criterion-r?v=11519135013

Tim

Tim, thanks for the link, but it does not lead anywhere.

Copy & paste it into your browser - it is a link to Allied's criterion boring head technical specs for all their products

Thanks Tim. The link won't work on my computer, but it does on my phone, frown

15/01/2019 23:25:54
Posted by Emgee on 15/01/2019 23:20:25:

Ronan, best wait until you have it in your hand to measure.

Emgee

Yeah , i think you are correct.

15/01/2019 22:22:09
Posted by Tim Taylor 2 on 15/01/2019 18:53:10:

take a look here:

https://alliedmachine.cld.bz/Criterion-r?v=11519135013

Tim

Tim, thanks for the link, but it does not lead anywhere.

15/01/2019 22:21:42
Posted by Emgee on 15/01/2019 17:38:04:

Perhaps 1 &1/2" x 18

Emgee

Emgee, yes i meant to type 1 1/2", seems to be a standard size with boring heads.

15/01/2019 16:53:38

I bought a used criterion boring head online yesterday, and am waiting for it to get here. The head is a 76mm/3" one, but has a bt40 shank on it. I want to order an r8 shank for it, would anyone happen to know what threads criterion use on these heads ? I want to get one as soon as possible, does 1 1/4 x 18 tpi sound right ?

Thread: Lovely old surface gauage on ebay - how to make it!?!
08/01/2019 17:02:41

Looks like an apprentice piece to me. Very well made, probably made back when engineering skills were appreciated by society.

Thread: RDG or Myford ER32 collet set?
07/01/2019 13:57:54

I bought an er32 r8 taper collet chuck from rdg in november. It was marked myford. On inspection it seemed ok apart from the nut was stiff on the body of the chuck. The first time i used it was holding an edge finder. Found the edge and swapped for an end mill, 4 or 5mm in diameter. Took the cut and went to change to a larger tool, the nut slackened off a quarter turn and siezed solid.

I took the whole thing out of the machine and sent it back to myford. After about a week i emailed them and they told me the reason it seized was i did not know how to use it, the collet had sprung in behind the nut, which couldn't be removed, and they were returning it to me at a cost of £13 !.

Despite the myford name, i reckon they are the usual Indian tat, the nut and the body of the chuck were similar in hardness, galled and seized.

I won't be buying anything with the myford name on, and no more from rdg.

Buy a vertex, or a good, european, american or japanese brand, or see if you can find one second hand on ebay or here.

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