Member postings for ChrisH

Phil - pm sent!

Chris

Quick query re Poly-Vee Belts. Seems they can come with a variety of variation of ribs - 4, 6, 8, 12, 16 etc. I presume selecting the number of ribs required for a particular belt is dependent on the power required to be transmitted. The question is, what determines the number of ribs required for any particular application of poly-vee belt.

Or put another way, how does one determine how many ribs are required?

Chris

Brian, the Z travel is all on the quill and what you dscribe is how I arranged it.

Old Mart and John, you are confirming my thinking!

Chris

I have a round column mill/drill with a 'DRO' on each axis, but basically, and they are basic in DRO terms, they are just digital scales. I was looking to ugrade the DRO set-up to one of the more comprehensive DRO systems with magnetic scales that give you all sorts of options on the display. Initially I was looking for a 3 axis DRO but now I wonder......

The problem is with the Z axis, On a round column mill attaching a magnetic (or optical for that matter) scale is not easy, bits have to be made and attached somehow, in fact I think I am right is saying Warco (who supplied the mill) says it can't be done, which I suppose would be a red rag to some folk to prove them wrong and until very recently that include me. But looking into the way the up-market DRO's work, it seems that maybe a 2 axis DRO system is the way to go as one can make the DRO think a Z axis input has been fed into it.

Which made me wonder just how much a Z axis input is actually used in machining most run of the mill (excuse the pun) stuff, or put it another way, how often does one do inclined milling and need a Z axis input. Mostly, for what I have done in the past, the Z axis just sets the depth to which I am going to mill to, or drill to, end of.

So my question is, am I missing something that would make it absolutely necessary to have a 3 axis linked up DRO, or would a 2 axis DRO with a digital scale on the Z axis work just as well? What have other folk found, what do other folk do?

Chris

Brian,

Re size of O ring grooves, check out this website :

**LINK**

Chris

What ever happened to that nice Nigerian Prince who just wanted someone to help him release some money from a bank account whereupon you were going to be generously rewarded for your help............????

I use an otherwise redundant vernier height gauge set at centre height. Keep it right by the lathe. Centreing tools is all it's used for. For me it's quick and easy and, due to being kept in a "specially for it" place by the lathe, always on hand.

+1 for Le Tonkinlois - for all varnishing, it's also waterproof (so they say!).

Chris

Went into Lidl today with my wife, whilst she did the groceries I went to see what 'specials' were on offer, found automatic welding helmets on offer at £22.something, just had to get one at that price!

Is it any good? No idea yet as not tried it, but it seems well made and 'the business' - ripper!

I spend some time of the year in France, (or really Brittany which is a very separate part of France!) post code 22160, about an hour from Roscoff, but the rest of the time in Somerset. Model engineering there (France ) is model plane making; in the UK it's more metal bashing!

Edited By ChrisH on 30/04/2019 23:13:11

RMA - I repeat, I was commenting in response to what others had commented upon. They specifically specified Merc, Audi & BMW. Yes, I agree there are many many drivers who drive other makes of car in a similar crass manner, but I also agree that the majority of Merc, Audi & BMW driver seem to fall into that same crass driver category; it was not co-incidence that so many others commented on here so and specified those three makes.

You seem to want to make it personal, suggesting I just have a down on German made car drivers because I probably don't drive one. So I presume you do have one and so consider yourself superior. If that is to be your attitude I can't be bothered to discuss this issue further - I have better things to do. And if you can't remember where this thread started I suggest you read the opening post instead of posting a supercilious comment.

Martin P's comment above re the Merc, BMW or Audi driver driving into the back of the transit - love it, sort of reinforces the point somewhat.

Oh dear RMA - my comment was summarising a lot of comments others had made on this thread about the Merc, Audi and BMW drivers in general. I would certainly agree with the feeling previously expressed here that most of those drivers seem to demonstrate a feeling of entitlement that the road is their own and drive accordingly, without a lot of regard or consideration for others and usually far too fast and too close to the guy in front - certainly none seem to have heard of the "only a fool breaks the two second rule" - and without regard for the road conditions, and yes, indicators do seem to be an optional extra most of them forego.

I was once in the middle of a 74 car pile up on the M23 early one winters morning in the 1990's. At that time I was driving about 30,000 miles a year. Because I did respond to the foggy icy conditions I managed to stop in the middle lane totally unscathed, as did the lady driver behind me and the coach behind her. All around us were cars that had been shunted front, or rear, or side and often all three. All those damaged had been seen to have been driving far too fast and close for the conditions. One idiot who undertook me at speed then swung out right onto the tail of the guy in front ended up next to me shunted all three ways and then appeared on the tv news saying it all happened so suddenly there was nothing one could do. If you drive like the idiot he was then I agree, there is nothing one could do.

Sound like a raw Merc/Audi/BWM nerve has been touched.........?

Too many seem to have a misplaced but touching faith in their own immortality.

We have the Berk in the Merc, the Idiots in the Audi and the BarnPot in the Beamer. Says it all.

And we all know the difference between a hedgehog and a Volvo (on a hedgehog all the pricks are on the outside.......)

I am another that has the cheapest DRO system offered by Arc on my mill. I wouldn't want to be without it, but it is fairly basic - realistically for me it just gives a digital easily read position relative to a datum and in either imperial or metric readily switchable; it is what it is, a cheap way of getting a DRO on the mill and one must recognise that, to get more functions and better quality one has to pay a lot more.

It has not been without it's problems. The display threw a loopy very early on which Arc readily replaced FoC no worries. The display also used to switch itself off, a feature that used to manifest itself usually when I switched the 1ph mill motor on or off - that doesn't seem to have happened since I switched to a 3ph motor with a variable frequency controlled inverter. Also the readout bars occasionally 'stick' - you wind the table along but the display doesn't vary but then jumps to the new position, and occasionally an axis zero's itself for no apparent reason. I have lived with it and worked around it as it is what it is, but that does disappoint. Having said that I've happily had the system for very near 4.5 years now and not regretted buying it.

However, I do lust after a more upmarket DRO set-up like that marketed by Machine-DRO or EMS-i, with the small magnetic readout bars and all the desirable functions, but so far have struggled to justify the capex-spend with Senior Management! One day perhaps.....!

Chris

Edited By ChrisH on 24/04/2019 12:05:14

Just out on interest, this evening I tried that old nearly full tin of iffy non-drip gloss paint which wasn't performing right, that had come with the instruction "Do Not Stir", that in a hissy fit I had given a good stirring to on the basis of it was crap before, stirring might make it better, if not then it will get binned anyway. Well, lo and behold, said tin of iffy non-drip is now looking like a real one, painted with it and it seems to be OK. Ripper!

Another lesson learned!

Chris

I used to save all tins of paint, "just in case", now I am tending to bin them when finished if not fairly well full, and buy new when the next Senior Management Decoration Instruction requires activating.

I took a load of old paint tins with various amounts of paint left in them down the tip, asked what to do with them, "chuck then in the unrecyclable skip" came the reply. So now I do, without asking, and hopefully out of sight of their watchful eyes, "just in case"!

Have stirred said tin this evening whilst in a "oh sod it " mood, will see what it's like tomorrow. If it was to be binned anyway not much to loose.......

Chris

George,

Strimmer cords break so you have to wind more on, and on, and on, then eventually when you have tired of that go buy another reel. All down to manufacturers profit requirements!

Chris

I've noted over the years Andrew that you are very good at many things; stirring being one of your most amusing ones!

Chris

These replies generally reflect my thoughts! Suspected stirring a non-drip paint would turn it into an ordinary paint. Hate non-drip paints anyway, can't get on with them. Only kept this one because of the colour. It will likely get binned!

Thanks all,

Chris