Member postings for not done it yet

If it is a decorative finish and not clened up after corrosion, it was likely tumbled in a mill with some hard, heavy, spiky tumbling media.

Do you really need a die or would a thread chaser be sufficient? A location might help, too. There might be someone local.

I meant their days were numbered.

You may well have done, but there are lots of them out there, and will be for several years - unless their horrible, not fit for purpose motors/control boards are replaced, before being offered for sale, or these cheap under-designed machines are scrapped.

In the meantime, there will be a lot of unsuspecting buyers (perhaps as JS suggests, or maybe new starters that just don't have the funds for a bright shiny new machine). Ethics, really - whether you support the unsuspecting innocent buyer or the possibly unscrupulous seller pushing off his rubbish machine to an unsuspecting buyer.

I rest my case. It does not, and will not, affect me. I would be very wary of buying second hand chinese and would even avoid new chinese at that end of the market.

But please don't quote me and then include dealers or distributors in your apparent reply to my quoted post. I did not mention them at all.

brushed DC motors on machine tools will be a distant memory.

Not so. There are still many machines on the market, aimed at first time buyers, generally. Often those that are in the market, but unaware of the deficiencies of some machines, particularly the motor/controller combinations.

After all most manual cutter re-sharpening is done dry.

But usually with a bucket of water to keep the tool cool and not likely to the accuracy expected of a surface grinder.

We may cut dry on our lathes but with bigger jobs needing to be accurately turned, we may still need to allow the workpiece to cool before obtaining a good measurement. Horses for course, I say.

So the price variation we see as consumers is very often not a distributor being greedy

Sorry, but you clearly missed my point. I did not even suggest that distributors or dealers were being greedy. Even they cannot give a decent warranty period for the motor/control board for fear of excessive claims.

Of course, some dealers are better than others and retain spares at reasonable prices, but it makes no difference to the fact that a too high proportion of these machines were never truly fit for purpose.

What were they filling? Obviously not cars.

Discriminatory, possibly sexist(?), unsafe (if storing 25l of volatile fuel - only allowed, by law, to store 5l or a gallon in the UK), looks like a confined/enclosed space....

OK if it is for paraffin, mind...

article in MEW on how to replace the horrible DC motor on your Chinese mill...

Or one on why not to buy machines with these cheap motor/control board type machines because it will likely be a case of (for the motor/control of board) of buy cheap, buy twice... or thrice ...or...

There must have been more than enough failures to demonstrate the poor quality of design, sizing or whatever.

were made in stars that eventually exploded.

A very simplistic view,. Not all stars explode. Our Sun eill not. A star needs to be about 2 1/2 times the size of ours to end its life as a Super Nova. The Sun will become aa red giant and then shrivel to a white dwarf. It most certainly will not be just hydrogen and helium by then.

Do not worry! Big Brother will look after you!

Twitface, loyalty cards, bank cards, any cards, using the internet for 'surfing', in fact most things you do on line or by card are being watched by someone.

Smart meters are yet another - they could tell what time you get up in the morning by extra lights, or first kettle boil, if they really wanted to.

Join any government scheme and they want to know everything they can get from you - and everything is then shared by the rest.

One bolt, one cheap and nasty bolt? Not necessarily representative of bolts in general. But do remember that nuts and bolts are not completely interference fit, by any means.

Ridges and valleys of nuts and bolts must not interfere, so are cut/rolled appropriately. Yours appears to be outside the accepted standard, if measured to an apprropriate accuracy. Just check the thread form diagrams.

Cost (particularly buying cheap) is often a measure of of compliance with the accepted standards.

Here we go again. Lies, damn lies and statistics - how true!

The 36% is, in fact, not the time that wind turbines are running. Just plain poppycock. It is simply a measure of the amount of leccy produced, compared to the name-plate power of the turbine, twisted round to mean something else, by either ignorant journalists or by opponents of these structures (including those who are anti renewables in any way, shape or form).

To those that actually think about it, the connection to the grid must be adequate for the maximum possible power that might be generated at any point in time. Think about it - use a 3 amp fuse in a circuit because none of the five connected loads exceed that value, then turn all those loads on at the same time. Yep, the fuse would blow! A very simple concept that many choose to ignore or are not even aware of (and applies to wind turbines in a similar way).

Off shore turbines can provide more than 40% of the full rated output over the year; land turbines operate at typically 25%. That is why off shore turbines are better - more wind, more consistent running and more power output!

Now to Mike's comment. Let us analyse what he said. 'Once' Yeah right, one instance with no consideration of the other 364 days in the year. So the statement is a useless yard stick. Of course, we should all know that the wind does not always blow at all times! So a very misleading comment from someone who either does not understand the weather, or maybe an opponent of wind turbines - or maybe just a mischievous comment - take your pick!

Further, the fact that the rotors may be turning at full speed does not mean the output is high - the blade attack angle is changed to maintain a constant rotational speed and generator output is controlled at the maximum available from the current wind conditions. When the wind speed exceeds the maximum for 100% power output, the blades are feathered to reduce the power taken from the wind.

Just like flaps are used on aeroplane wings to increase lift at slow ground/air speeds compared to minimum drag situations in normal flight. Simples, really, and all engineers should be able to comprehend that.

On occasions, if the wind is really excessive, the turbine(s) may need to be stopped fo avoid over-stressing the structure. Also, on accasions, the connected grid cannot transfer all the power, provided by the turbines, and output has to be 'curtailed'. Nowt to do with the wind turbines, just a failing of the grid design (which historically radiates from power stations to smaller, thinner conductors at the extremities (clearly needs to be changed when the power supply is off shore).

14" rotary table has not made it to the mill yet due to weight

A scissor type lift might be adequate for this application? An engine hoist might b

e another option, if you have sufficient man(o)euvering space.

Edited By not done it yet on 10/09/2017 21:08:50

Was this the oxy concentrator thread, by any chance?

I liked this one here: **LINK** but don't know if its too fancy rather than useful...

You might have been disappointed on its arrival. It is only a 3"vise.

The outer bearing needs to be a sliding fit on the spindle not a press fit.

That is surprising! So the inner race could turn on the spindle? Would that not possibly lead to wear on the spindle?

Try my link

Didn't work when I tried it before posting

I just put 'nyloil' into 'goggle' and it came up with loads of hits. It' the first thing I try.

They have said i can return the feed so might just do that.

At their cost, I would hope, if they have made modifications to their specific model and nobody from their end 'flagged it up' before sending you the wrong item.

Question is:what are they (or you) going to replace it with? Power feed is a great improvement for most of us (I certainly cannot get the same finish by traversing manually).

really good quality?

No, but considered adequate, or more than adequate, by some, and they are likely as good as the other cheaper ranges. As with most things in life, 'you pays your money and get what you pays for'.

Of course Chronos push them - that is what they sell. I buy from Chronos and other outlets. Arceuro are, I think, current favourites overall.

I have one of the better range of vises (precision type 2) from Arceuro and a larger vise from Chester. The smaller one is very good (better than my ability, but was awkward to get used to). I am now warming to that one because the finish is so much better than the larger vice. It also has the thoughtful addition of threaded drillings for the fitting of stops - but it did only come with a plain key (which has been replaced by a better T-key, which is less likely to be temporarily misplaced!)

I would say spend the most you can afford from your budget, as it is an item you will be using often and it should not wear out.

So, I'm still not sure where the emphasis in your title should be - on the 'really' or as 'really good'. I would really say Soba is 'fair' but not "supa dupa".