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Member postings for Nicholas Farr

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

<< First < Prev 179 180 181 182 183 184 185 186 187 188 189 Next > Last >>
Thread: An accident, a PRC imported hook and a great luck
06/03/2011 08:05:35
Hi Dias Costa, yes good to hear no injuries. can only agree with Jeff, use reputable lifting tackle and don't ever get any part of your boby under any thing that is up in the air or on jacks ect.
 
I have a 500kg set of chian blocks on a overhead gantry in my garage, would probaly take a 1000kg, but have never tried it.
 
Regards Nick.

Edited By Nicholas Farr on 06/03/2011 08:06:03

Thread: MT2 collet slipping
06/03/2011 07:54:22
Posted by Versaboss on 19/02/2011 13:44:32:
Posted by Andrew Johnston on 19/02/2011 11:50:38:
I
 
Can you trust them when they don't even know the correct units for torque? ...

and for those who eventually don't get it: ft/lbs it ain't!

Greetings, Hansrudolf
 
Hi, found the leaflet for my Teng Tools 70-350 Nm torque wrench yesterday, guess you can't trust them either.
 

Regards Nick.

Edited By Nicholas Farr on 06/03/2011 08:14:49

Thread: Milling a square lump of steel that isn't square
03/03/2011 19:32:33
Hi, Kwil as I was reading down these posts, and I was thinking the same thing, only I was going to say adding a suitable piece of flat with a good dimple in, between the ball and the moving vice jaw to stop the ball from pinging out unexpectedly.
 
Regards Nick.
Thread: Boiler Insulation
03/03/2011 09:37:43
Hi Fred, I once used some ceramic matting type material many years ago where I used to work, this was about 20mm thick. Don't know if it is available in any other thickness or where it is obtainable from, but it could be cut and formed round any shape required.
 
Don't know if you removing asbestos is legit', as it is normally only allowed by licensed people who can despose of it safely. A lot of regulations abouit that stuff now.
 
Regards Nick.
Thread: BBC TV show that might well appeal to ME readers
03/03/2011 08:55:11
Hi Andrew. the book is interesting reading and well illustrated.
 
Regards Nick.
Thread: Rotary Table / milling machine
03/03/2011 01:27:47
Hi, further to my previous post above, my table must be an older version than the one described on the website, as studying it in more detail, the graduations on mine are in 2 minute steps, hence the 30 markings denoting half a degree. The vernier steps are of 20 seconds, therefore setting the table to 10 seconds is approximation by setting the wheel graduations between the appropreate vernier graduations.
 
So I reckon my dial is reading 1 degree 25 minutes and 30 seconds, right to left.
 
Regards Nick.

Edited By Nicholas Farr on 03/03/2011 01:35:56

03/03/2011 00:46:22
Hi John, sorry I'd forgot you asked about the graduations on the handwheel. I have a Vertex HV6 and I have looked on thier website (below) and it says that the coller is graduated in steps of 1 minute and the vernier scale makes settings down to 10 secounds possible. The ratio of the table is 90:1 and the coller also has 0, 1, 2 and 3 quarted making the 4 degrees that mgj metioned, there is also a 30 midway between each of the above mentioned digits. (see pic below) The vernier has devisions of 60-0-60 in 7 graduations. I have not used this facility myself. but the coller is moveable by loosening the grub screw that can be seen, tuning to the desiered position and then tightening the screw. Once you have a reference mark alined and then turning the table noting how many dregrees, mins and secs you require, it can be done by counting the degrees by the four numbers X the number of rotations of the handwheel, plus the number of minutes on the graduations and then lining up one of the graduation marks to the number of seconds required on the vernier scale. I hope I've got that correct and it makes sense, yours may be slightly different, but the proceedure should be much the same.

http://www.vertex-tw.com.tw/products/products_list.php?language=_eng&cid=10
 

Regards Nick.

Edited By Nicholas Farr on 03/03/2011 00:53:42

02/03/2011 21:26:35
Hi, I don't know what makes a milling machine truely universal. I have a brocher that my old company I used to work for chucked out when they got rid of a Parkson 1NA Universal Miller, made by J. Parkson & Son (Shipley) Ltd,.
 
Looking through this brocher it seems it really was universal. As well as having a table that swiveled at 45 degree each side of centre, it had various add on bits of kit. Some of the kit included vertical spindle milling component, slotting component, cam milling component, feed reducing equipment, power driven rotary table, a universal dividing head which could be used in conjunction with universal milling components styles A & B which could cut helical gears and worms without the table being swiveled. The two milling components could also cut racks held in a jig. The universal deviding head could be used in conjuction with the feed reducing equipment to cut scew theads or spirals of short, single or mulitiple lead, or similar work.
 
It doesn't mention anything about turning, but it seems as you could cut almost any thing on it if you had all the add ons.
 
The above might be a bit of useless info, but is seems this machine really was a universal milling machine.
 
Regards Nick.
 
P.S. I ment to say this machine predates CNC machines.

Edited By Nicholas Farr on 02/03/2011 21:35:39

Thread: BBC TV show that might well appeal to ME readers
02/03/2011 20:08:21
Hi, yes it is on iplayer now.
 
Regards Nick.
Thread: Rotary Table / milling machine
02/03/2011 11:27:26
Hi Steve, I guess what you ment is that there are horizonal milling machines that also have provisons with the suitable attachments (often an opional extra) to become a vertical milling machine,
 
I think for the ME vertical milling machines are more vesitile, but horizontal ones do have some avantages. In the ideal workshop you would have both, but of course budget and space prevail.
 
Rotary tables can do all the things that have been said, and like mgj says can do things you haven't even though of untill a job crops up and you scheme a way of doing it. Many of them are designed to be used in the horizontal plain and the vertical plain. A small one can be used on the cross slide of your lathe in the vertical plain for instance and be used for drilling holes in discs or cylinder blocks ect. especially if it has the option of fitting dividing plates to it.
 
Regards Nick.
Thread: Lathe motor popping
02/03/2011 10:54:54
Hi, I have to agree with Kwill. Isolation transformers are very usefull for isolating equipment from the mains for a number of reasons, but the output still has the potential to cause fires, electric shocks ect., and damage to equipment, so the same safegaurds that you would expect to use on the mains should also be used on the output of your isolation transformer.
 
If your have electrical problems with a motor it should be fixed by a compotent person, or replaced.
 
Fualty motors can become very hot and cause a fire when you least expect it, and may even smoulder inside and start to burn when you have shut your workshop up for the evening.
 
Don't ignore electrical problems and hope they go away, they won't. Get them fixed.
 
Regards Nick.
Thread: Classified advert problems - how to overcome.
28/02/2011 21:09:14
Hi, my Vista works fine, haven't had any problems with the said adverts. I'm using Microsoft internet Explorer 8.
 
Regards Nick.
 
 
Thread: Bending HSS
28/02/2011 20:56:05
Hi Peter, my mother was deaf in one ear and had to use a hearing aid in the other as long as I can ever remember, she ended up becoming very hard of hearing in her last two years or so and suffered from mild tinnitus would you believe, but she almost made 82 years.

With my mothers hearing difficulties, I can understand any frustrations people with hearing problems have, as some people get very impatience communicating with any one who has hearing problems. I suppose my brothers and sisters and myself grew up with with her hearing difficulties, so we are more able to understand the problems hard or hearing people, do have.
 
I feel I have been lucky in some ways working for my old company for the best part of my life, as they took safety very seriously, in that all types of PPE was always provided. We had hearing tests and cheast X-rays every ten years or so and various other examinations by a nurse on a regular basis, all on site. Having said that, if you were seen not wearing your ear defenders or eye protection or any other PPE where it was required, you faced disapline. The PPE was not provided as an optional extra, and not having any particular type was no excuse.
 
In a more recent place where I've worked, I've found it amazing that others can't be bothered to use ear defenders or even eye protection when they have been useing an angle grinder or hammering. I personally can't stand the noise of the angle grinder running without it even grinding anything, let alone any sort of hammering or noisey machines.
 
Regards Nick.

Edited By Nicholas Farr on 28/02/2011 20:56:42

Thread: Steel Boiler Tubes
28/02/2011 00:12:57
Hi John, carbon dioxide is not strictly regarded as inert. DIY argon welding gas in the small desposable cylinders is not that expesive, and a lot more convenient to use.They are fairly widely available to.
 
Regards Nick.

Edited By Nicholas Farr on 28/02/2011 00:14:08

Thread: Metric or Imperial Lathe?
28/02/2011 00:01:19
Hi Roger, it really depends on what units you yourself prefer to work in and are comfortable with. There are of course lathes with both graduations on the dials, the only differance being the screw cutting arrangement. If you intend to lean towards metric in the long term, why bother to learn how to use an imperial machine.
 
A lot of the lathes our farthers had, didn't have any graduated dials on them at all. it was a question of measuring and putting on a cut of your own judgement, measuring again and repeating the process untill it came to size. You can replace or overlay an imperial dial with one graduated to ten divisions or multipuls of ten, and then take trial cuts on a piece of scrap to find out exactly what each division is in metric mearsure, thus giving you a better idea than your own judgement of the size of each cut.
 
It is clear that most of the world is going metric and most material that stockists hold is in metric sizes and imperial things will be harder to obtain, but that is not a reason not to continue using imperial if you so wish.
 
In the end they both make swarf. (but is it metric swarf or imperial swarf? can you tell which machine made it using a mike?)
 
Regards Nick.

Edited By Nicholas Farr on 28/02/2011 00:03:10

Thread: "Unicorn"
27/02/2011 22:07:08
Hi Jim, you could try contacting; www.thetoolbox.org.uk or www.teepublishing.co.uk
 
Regards Nick.
Thread: Unimat SL belts & bearings
27/02/2011 20:51:08
Posted by KWIL on 27/02/2011 12:31:20:
e13 Magneto bearings are 13mm OD, try www.akbearings.co.uk Arc Euro Trade has e6. I do not know about Unimat belts.

 
 
Hi Kwil, I think you ment to say that the ID is 13mm, i.e. the bore. The OD being 30mm and the width 7mm.
 
Most bearing distributers supplying industry should be able to supply you with any available bearings and most of them accept cash sales.
 
Regards Nick.
Thread: Bending HSS
26/02/2011 21:46:03
Hi Peter, one thing I remember the master blacksmith I was trained by when I first started work was; "anything is worth trying a least once"
 
I always guessed he ment within reason, and it seems to me that your trial was reasonable.
 
Regards Nick.
Thread: silver solder with butane
26/02/2011 21:33:55
Hi, I believe I have mentioned this before in another thread, but broadly speaking both butane and propane in the compressed state turn to liquid insde the cylinder. Above the liquid level it is a gas volume at approx 7.5 bar, when the gas is drawn off the liquid begins to boil (like the water in your kettle) and while it is boiling the pressure will remain close to the same pressure. The boiling is dependent on thremal energy passing through the cylinder wall (similar to the thermal energy passing through the element in your electric kettle or the flame from your gas stove)
 
The big differance is the boiling points of butane and propane, while propane has a boiling point of -42.1 C, butane has a boiling point of 0.5 C. Therefore with a low abient temperature in the vacinaty of a butane cylinder, the less thermal energy differance there is. It would be like trying to boil a 240V electric kettle on 110V or having a gas stove on simmering level. With propane's very low boiling point, the thermal energy differance at the same abient temperature will be much higher and the same problems don't occur at the same gas rate withdrawal.
 
Like mgj says keeping the butane in a warmer ambient temperature will keep your butane gas flowing. All you have to remember is no energy in, no energy out.
 
I think if you have a flame of the same size with butane as you would with propane, I don't think you should have to much problem, providing you keep your cylinder out of the cold.
 
Regards Nick.
Thread: Here we go again
26/02/2011 10:24:49
Hi ian, just seen a bit about rescuers from around the world on our News 24. It tells of buildings that are very unstable and most will have to be demolished.
 
They talk of still over 200 people missing and the chance of finding survivers very low.
 
Wish all of you the best.
 
Regards Nick.
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