Here is a list of all the postings John Paton 1 has made in our forums. Click on a thread name to jump to the thread.
|Thread: Co2 emissions.. Steam or diesel best?|
The issue is 'net CO2'. Biomass recycles 'current' CO2, if I can put it that way. Fossil fuels release carbon accumulated over hundreds of millions of year giving an unnatural peak in CO2 due to the extreme rate of use.
Reforesting parts of the UK historically covered in deciduous woodland and harvesting it with larger timbers used for construction, furniture and fuel (locally to production, in log sections not pellets), putting trees back into hedgerows and stopping cutting them down without replanting, letting heathland, moorland and low grade agricultural land regenerate to woodland where that was their history will all help restore the balance. Trees, especially coppiced woodland, strip CO2 at a tremendous rate and provide other benefits in terms of moderating air temperature and the rate of rainwater run-off.
Sadly in much of the UK and other countries the number of trees continues to reduce.
This alone will not provide for our energy demands so other initiatives will be required, but I do wonder if putting photo voltaic panels on agricutural land is the right answer, the roofs of schools, barns, industrial buildings and similar large buildings seems more sustainable to my mind.
|Thread: Ebay being clogged up by certain sellers|
Yes it's a disgrace. It feels as bad a buying fake or stolen goods. I also hate buying an item apparently from a U.K. supplier whose advert is emblazoned with a Union Jack, only to find it is nothing of the kind.
£1.35 to send a letter from UK to Ireland, £1 to send 10kg package from China to U.K (presumably air freight given the speed of delivery)
who is the one laughing?
|Thread: Emergencies / Braking|
Martin's, thanks for a very clear reply.
On the electromagnetic brake option, am I rigth in thinking that is not compatible with VFD inverters? Certainly I removed mine when changing my VSL to VFD and intend to add a brake resistor if needing to reduce run down time (VSL has L00 chuck mount so no unscrewing problems).
|Thread: MR16 LED Spot lights|
The other risk is cracking of cable insulation where the lamp arm articulates, combined with flying cutting fluid.
In theory the earth will cope with this but I would not entrust my life to earth continuity. With a dry floor and rubber soles shoes you might only get a belt but still best to avoid playing roulette when you are only part way through a project.
|Thread: Outdoor notice board|
Some more ideas:
For a cheap and cheerful frame frame see if you can get an offcut of the fibreglass covered ply as used for lorry and trailer bodies, then frame with aluminium and have a Perspex 'window'.
People who build covered trailers or repair lorry bodies often chuck away good sized bits of this laminated board.
This option wont be the prettiest but will hold up well if you seal the cut edges of the board with resin or two pack polyurethane paint and set the aluminium on silicone mastic.
For a smarter 'heavy duty' frame I would go for Cedar or Teak which is durable even when not painted so stands up well even if maintenance is neglected.
You may also need to consider the need for planning consent if the board is much bigger than A3. Some areas /planners are hot on this.
Cork tiles are great for pinning to and are naturally durable.
|Thread: Health Risks with Filament Printing|
HSE today issued a bulletin which includes advice regarding carcinogens associated with welding and similar risks associated with filament 3D printing.
Whilst most modellers will spend rather less time exposed to 3D printing than someone employed to do printing, it strikes me that many pursue their hobby in small, poorly ventilated 'dens'.
This being so you might like to follow this link so that you can make your own judgement of risks and any need for improved ventilation.
|Thread: Long bed lathes affected by the tide|
When I worked in Essex our surveyors were working on the Fre Station site in Tilbury and having difficulty 'closing' the survey to the local datum anything like the required accuracy.
After some investigation they found that the land was rising and falling appreciably with the tide. I am sorry that I cannot recall the actual amounts but I seem to recall that it was afactor closer to inches than thous.
|Thread: More evidence that the world has gone mad!|
|Thread: Lathe annoying 50Hz hum|
NDIY that makes a lot of sense - there were definate hot spots and sweet spots around my workshop where the sound was loudest or quietest. I used to stand at one of the null points during machining whenever possible. I presume that the dimensions of my workshop and placing of the mill happened to aggravate the problem and create the perfect storm. Perhaps a bit surprising that this should be so in a pretty cluttered room.
Anyhow It turned me into a committedbeliever in VFDs and 3 phase motors!
William, +1 for experiencing hum from a motor. I once had a 1.5hp 2850rpm motor on my Centec mill, the hum was so bad that I adopted the habit of wearing ear defenders, despite resilient mounts, belt drive and 50mm sand in the cabinet base.
ithen fitted 2 hp 3 phase motor fed by an inverter and it is whisper silent.
I have always suspected that the original motor had loose windings or delamination of the rotor.
either way it was absolutely the motor was humming and particularly loud. The motor did not run hot either which always surprised me.
|Thread: Lathe chuck guards - how many folk use them?|
We have a large wood locally which is a great favourite with serious mountain bikers. Our A&E unit commented recently the huge number of wrist and collar bone injuries that occur in the car park at the roadside. 'Its how you tell the story!" (they would never admit to riding recklessly and accept the risks so do not fit air bags)
|Thread: LPG heater- fumes|
I can add that I had experience (professionally) of excessively high Aldehyde concentrations with a gas 'direct fired' space heater in a large public swimming pool. When investigating this I discovered that carbon monoxide is produced under the same conditions that create aldehydes, indeed this is an algorithm used when testing natural gas fired cookers.
Aldehydes cause watering eyes and headaches so are a better warning than you get with carbon monoxide. If you are sensitive to them you will find them in the outlet of most gas burning devices.
As others have said the primary cause is lack of sufficient oxygen but this can also be due to poor set up of the burner (which was the cause of the swimming pool problem) but we also found that (in the humidity and chemically charged) atmosphere of an indoor swimming pool there appeared to be some 'ponding' of combustion gases in certain parts of the room.
|Thread: Heavy Duty Castors|
Thanks Martin, yes I think I found those but don't look as robust as the others.
Perhaps I should have said I have done a fair search on Google, Bing, Fleabay, Amazon, Alibaba and contacted the suppliers of wheel dollies having similar castors - but cannot find a 'source supplier' of the castors or get replacements as spares for less than the whole dolly (noted your comment Ian)
Thanks Bayzle - Ill try that angle
I am looking to buy two (or maybe four if the price is right) heavy duty castors.
They need to have 75mm dia iron or steel wheel and preferably be of the type with a rectangular fixing plate with a lug at either end and a central stud for fixing.
The type I am after is as the ones used on several makes of car wheel dollies.
The dollies sell for as little as £20 each so hopfully the wheels should not be mor ethan a fiver each.
Try as I may I hav been unable to find a supplier of these castors, only ones wirth rubber or plastic wheels/tyres or a very low strength (furniture grade) iron wheel. An old or damaged wheel dolly would do if it had half decent castors on.
Any ideas on where to source them?
|Thread: S50 cylinder issue?|
Just to add a 'well done' on the photo front Lainchy. It couldn't be easy to get that blowhole to show on a photo - you must have been careful and or clever with the lighting!!
|Thread: How to repair old King Dick socket extension?|
I have often wondered with these guarantees how one defines the life of, say, a spanner. There is a medical definition of life for a human, but maybe no equivalent for a spanner?
If it fails to function for the designed purpose can its life be said to be over?
However I sought to buy spare parts for an aged Blue Point torque wrench and was pleasantly surprised when the required bits came back FOC! Easy repair and that tool is now excellent. I don't know if King Dick offer the same guarantee or adopt such a generous interpretation of the word 'life'..
|Thread: Caravan Insurance|
We had our campervan insured through C&CC but the premium unexpectedly rose by £1000 (about x4) following a daytime break in and theft from our campervan while in France.
At that rate the insurers would have recovered the amount of our claim within 2.5 years had we stayed with C&CC.
We changed insurers and ended up paying £30 a year less than the original C&CC premium so all was not lost, but had this not been the case we would have been better to self insure the burglary risk.
|Thread: Disposal of workshop contents|
A properly organised and advertised auction 'on the premises' certainly produces results if there are sufficient interesting items to attract 'end user' bidders rather than dealers - I have seen well used items fetch more than they can be bought for (trade) new and have come back from several auctions empty handed as the prices were so high.
Conversely the items can fetch next to nothing in an inappropriate local auction. A couple of years back a friend and I were the only bidders at one such and each picked up really high quality grinders ( a woodworking whetstone and a tool and cutter grinder) each for a maiden bid of fiver and each worth nearer £200. I was waiting for a second bid on the tool and cutter grinder but it never came. Both worked without fault.
|Thread: Garden shed find|
Don't panic if the taper is u/s as I am pretty sure I have a spare spindle for that model!
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