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only one way round)

And not half inch because they are of different pitches! Whitworth are 55 degrees and UNC are 60 degrees, so UNC are difficult to screw into whit - but not impossible, or at least can be eased with a die.or nut runner.

KISS Principle - if the bed has twist in it it should be removed.

KISS Principle - shimming is the obvious choice and documented in (most?) manuals.

KISS Principle - start with the floor connections and work upwards. Absolutely no point in levelling the lathe before levelling the stand.

I would nor even be trying to run a 4

HP motor from a 13 plug top. Probably not, even if soft start. By the way, the fuse is there to protect the lead. Overloads are what you need to protect the motor.

Yes, of course. Temperature range in use is just one of them.

I lathed mine (22mm) but I think I might cut the next one on the machine - well at least to finish it to size.

Not yet tried it for turning but I can't see too much hassle, apart from possibly needing to move the cutting tool, to get enough ''long travel", and hand feeding. Morse taper blanks are cheap enough from ArcEuro.

I did hear it reported that there was more CO2 generated by 4 blokes cycling to work than the same 4 sharing a small car for example.

Not really relevant. Comparing fossil fuels with human food fuel is flawed. Most (not all, of course) food is derived from plants doing photosynthesis, (CO2 from the atmosphere), not from fossil fuels which have been sequestered under the Earth's crust for up to about a couple hundred million years.

Those 4 blokes will produce CO2 even just travelling by car. So most of our food is from renewable energy (apart from fossil fuel inputs for fertiliser, farm machinery, transport, food refining, etc).

If they used an EV which had been charged with renewable energy Solar, wind, hydro, etc) the figures would be much different than was reported. But still irrelevant.

less as it fades out, and in again.

Probably the best part of b****r all. Not much PV geneation at night. Might be some waiting up late or getting up in the middle of the night to see it. Likely complete cloud cover so nobody might bother. Got a weather forecast?

If you really want to see the real outputs month by month and year on year, have a look at the Navitron forum where monthly results from all sorts of locations in the UK (and with details of orientation, etc) are reported.

750kWh is likely the typical expected annual output per kW installed, for the UK. Differences between summer and winter insolation are well documented. Around 8:1 at a guess. You can check the expected solar production for your particular location, orientation, etc using PVGS data which, over the years, has been proven (or adjusted) to be quite reliable.

Clear cool days in springtime is a good time for PV - good insolation but cool panels. There is no secret that PV panels are good. Just look around at the number of commercial enterprises spring up. So cheap now that for larger installations no subsidy is required - so not like fossil fuels which recive, effectively, billions (costs due to clearing up the mess left behind, lost work time and ill health issues connected with burning fossil fuels for energy.

They are currently planning a one GW solar farm in Australia; plans for connecting North African solar power to Europe are in the pipeline; there are proposals to lay a 1GW HVDC from icelandic geothermal generation and 1.4GW from Norwegan hydro generators. Renewables will replace fossils eventually, so the sooner we all get used to it, the better it will be (without all the naysayers groaning on!).

I have a Wisconsin engine with taper roller main bearings. As I recall, the end of the crank can be clouted with a soft hammer/mallet, but a steel hammer of any description should not be used directly on the crank (they mention using a softer drift, if using a steel hammer). This was not to prevent mushrooming the end of the crank and the instruction was pertinent to bearing life.

How is anyone going to connect a battery ( DC ) to the National Grid ( AC ) ?

Not exactly the same way as PV is connected to the grid, as has been done for years, but by similar new technological solutions. In a similar fashion, but again not the same, as the way they convert the inter-continental DC power transmission lines to grids each side of the Channel, North Sea, etc, and even between countries with land borders.

Just a thought at bedtime.

Without any fine detail, can't tell.

Forever, if you wouldn't otherwise need it and quite quickly if you bought a second hand Leaf and used the free leccy to power your home. Work it out for yourself is my suggestion.

uranium is a toxic heavy metal like lead so avoid inhaling the dust.

Except that uranium is radioactive and will be decaying inside you - not like lead which is just a nuisance and can be readily cleared from the system if diagnosed as a problem.

Alpha particles don't travel far, but are very destructive to dna etc due to their mass (compared with, say a beta particle which, while faster, has a mass of only 1/7000th of that of an alpha particle). Cannon ball versus ping pong ball comes to mind.

because the main fuse is undersized.

Debunked as unrealistic. Possible theoretically, but practically a non event. Cars don't charge at 11kW unless on a 3 phase supply (max take is 7.4kW on a single phase supply) and most houses are now fitted with100A fuses to the grid connection. So just a load of waffle, really.

I think we have an 80A fuse - that will cope with 18kW quite adequately. - and one of our kettles is 1kW while the other is 2.6kW, so where is this 'problem'? Scaremongering or a lot of people who cannot work out that it is not reality?

Yes, we can make tea, or even cook an evening meal at the same time as charging an EV. But most will, by another few years, have a battery as well as grid supply, I expect. That or use cheaper leccy later through the night. Those with smart meters will be paying extortionate rates for their leccy at peak times, so that will put them off a bit, perhaps.

Go on, work it out for yourself!

There seems to be some misunderstanding about VFDs and three phase motors here - I think.

A 415 three phase motor can be run off a 230V input three phase inverter. These are different to a 230V output type of three phase inverter as the output will be 415V. Different price too!

I have both. An expensive 415 output runs a motor wound star and likely difficult to convert to delta. The 230V output inverters are the cheaper and more common variety. Better to break the star point, rewire in delta and use the cheaper alternative, if possible.

JB,

Would that be sufficiently close tolerance for a lead screw nut?

There is a difference between being the 'right size for the drill' and being 'too big for your space'.

Can you not cut it down further, if it is oversized for the application? Alternatively secure it to the floor with suitable fixings, if reduced to a size which is inadequate for the application. Safety is important.

A, B and C are likely marked as U, V and W on your motor, if it is simply a 3 phase motor.

The three phase connections should all be equivalent, so not important which connection goes to which terminal.

Direction of motor can be reversed by changing over any pair of motor connections.

Edit:OK, V1, V2 and V3 for yours.  Unimportant difference.

Edited By not done it yet on 21/08/2017 18:45:03

I use my vertical head for drilling. The only problem with no quill would be the table weight. One has to raise over 50kg manually as opposed to operating the light spring-loaded quill mechanism. If power fed, I would prefer raisng the knee than lowering the quill whenever a fairly large extension of the quill is required.

Setting the workpiece for angled drillings is prolly easier than having to re-tram the head afterwards. Swings and roundabouts - except for no power feed - for he majority of jobs, I think.

Threading holes is the most useful other duty for the quill, I reckon.

Edit: Andrew, impressive!  Yours weighs over 5 times (inclusive the stand) my Centec. My other, smaller vertical mill does not have a quill, but still gets used a fair amount.

Edited By not done it yet on 21/08/2017 16:36:58

Will they make anything sufficiently durable for lead screw nuts, yet?

That would end the numerous problems of those that require left handed theads of some obscure size?