Member postings for MadMike

Do you have, or have access to a lathe? That would make he (w)hole operation very simple.

F you are close to he East Midlands the I could do it for you. There are possibly others on here who would help.

I use a tank with a weir which isolates any swarf that gets washed down with the coolant. For a pump I simply use a small submersible pond/fountain pump. Very low cost and very reliable. Look for one that will lift your coolant around 4 or 5 feet if the tank is on the floor. I have mine below the tray on the lathe stand and a 4 feet lift is more than enough.

Put the chuck on the arbor. Then put a known accurate part in the chuck, and I suggest a hardened dowel pin of around 12mm diameter. Then clock the dowel pin to see if it runs true.

What I wonder do you intend to fit in the chuck when working? A drill perhaps? If so after checking the pin put a known size drill in and drill a hole about half an inch deep. Then check the diameter of the hole produced, and using a lever clock check if it is actually truly circular. If it the size that you expected and is round, rather than oval then everything is fine.

Obsessing about theoretical "run out" is not important. The important thing is what the machine produces. If the run ouit is still unacceptable I would suggest that you check the mill spindle for accuracy. You say it is a second hand mill and of course it may have wear and need new bearings or adjustment,

Interesting observations by Terry B, Duncan Webster regarding responsibility for the erection and subsequent maintenance of the buildings and government. I made this point on this very forum yesterday and added that "people should stop blaming governments of either hue". Well seeing Duncans comment I looked at my posting and for some unexplained reason and without advising or consulting me somebody has edited my comments out!!!!! Censorship? Really?

The problem AAC concrete is caused by the fact that in manufacture it is aerated. Cut it in half and it looks like Aero chocolate, but does not taste so nice. It has a number of benefits on which it was sold.

Lightweight: It floats in water.

Cheap to produce.

Great thermal efficiency, 

Great noise insulation value, so ideal for multi occupancy dwellings.

Can be easily cut if necessary.

However in their haste to use these characteristics some body in just about building design/architects practice forgot to check and compensate for its reduced compressive (load bearing) strength.

Edited By JasonB on 03/09/2023 06:51:32

Do I detect the recent onset of cabin fever? Is this a serious engineering discussion?

Sorry chaps but I am slightly confused. Setting the compound slide at 29 instead of 27.5 degrees was an error but if you were using a full form threading tool why did you set the slide at all? If you use the compound slide to set the tool to its correct depth then you need to calculate the length along the flank of he thread as it will greater than the actual final thread depth. Simple schoolboy geometry will give you the flank depth. From memory you need OHMS... Opposite over hypotenuse equals Sine (in this case Sine 27.5 degrees).

Of course you could simply type in "Low melt metals" in the search function and it will show Woods Metal and Casting Alloy which melts at 225C. It will go to the specials pages and highlight each item that falls into the Low Melt Metals category.

Edited By MadMike on 21/07/2023 15:00:58

Interesting view Lee, but I have just looked at their site and it functions perfectly normally.

I checked SS Hex bars, it opened up a whole list of sizes including those for making BSW/BSCY threads. Clicked on the size I wanted and it loaded straight into the "basket."

Seemed fine to me.

A question if I may Howard. When you ordered from Metal Mania did you tell them not to deliver on the Wednesday? I ask because I get most of metal from them and have always found them very helpful if I wanted a specific delivery day.

Megalomania HowardT? I assume that was due to your spell checker. LOL. You mean Metal Mania I believe.

Just to clarify a little, the Charpy Test (also known as a Notch Test) would have been on the "chisel tools" to determine their resistance to breaking using a pendulum and measuring the energy required to break the test piece. If you have not been involved in material testing then it is probably worth trying our good friend Mr. Google.

Brian Connelly, an interesting view but it is incorrect. As I said earlier Impact Energy is a value determined by the energy expended to cause the test piece to fail. It's value is, again as I also said earlier, dependent upon the size and composition of the test piece. Whilst your observations may reflect what may be happening when the tool is used the Impact Energy is only relevant to the test.

Impact energy is the energy required to make a standard test piece fail. It is somewhat meaningless in this instance unless you know the size and composition of the test piece used. However if the test piece was a block of cheese it would not be so effective if it required 55 Joules to make the cheese test piece fail. Silly example but I am sure the learned throng will understand.

Edited By MadMike on 12/07/2023 15:37:20

Why don't you just get some 4 and 5mm bar and simply drill, o team to size if the bore is critical.

Come on chaps all this food and gloom about keyless entry vehicles.

whenever man invents/designs any kind of security device he scally's will hunt for a way of beating ectechnology.

There are two things that can be done to slow them down and/or cause them to look elsewhere.

fFirstly use steering lock as already discussed. Cordless anger grinders are available but they are noisy and take time, both the thieves enemy.

Then add to this securing the keyless entry system. Being electronic a Faraday Cage is the way. There are pouches to keep your key(s) in which contain metallised linings which mask the signal from the key. Spare keys should be kept in a similar device or even a simple metal container.

Domthe pouches work? Well we have three cars with keyless entry and periodically check them by leaving them sealed and then trying to open the cars with the key alongside the door handle. In well over a year they have never failed.

The pouches are readily available on eBay, Amazon and most good car accessory shops.

As others have pointed out a modern charger/condition monitor, which is what this item is, will not operate as a power supply.

On the basis that you have a supply into which you can plug the charger, why not get an inverter or regular transformer? Incidentally what were you expecting to power up using the Aldi charger?

Come on chaps I really am struggling with the amount of discussion this simple problem has generated.

Two obvious solutions IMHO.

First simply retap the 5/5 UNF thread with the BSP thread you require.

Second take a piece of 9/16 or 3/4 bar (metric equivalents are apparently available. Turn one end down and die cut or screw cut a 5/8UNF thread. Drill through to produce the bore size you need to suit your pipe work. Then Drill and tap the second end with the appropriate BSP thread form

You might consider using a piece of hex bar to allow the use of a spanner.

EDIT: I forgot to add. The answer to the question posed in the initial posting is YES.

Edited By MadMike on 29/04/2023 09:53:14

Photo's? It's the 21st century and forums still cannot just be set up to post direct from the posters computer/camera files. Albums and their quirks in this instance and on some you have to use a third party hosting service, so 20th Century.

Dear old Facebook, which I also inhabit, allows you to post pictures instantly from your computer etc. You can even load a batch of photo's if they are arranged correctly in your files. even loading them one at a time it is possible to put them on line in a mere fraction of the time taken on these forums. I have never understood why forum creators/hosts have never got over this problem. Perhaps because they are not problem solving engineers. LOL.

S.O.D. I have a 254S and of course the designation is merely 10 inches expressed in the metric system. Incidentally mine is an Imperial machine, and not metric. All them little thous and tenths are stored in it for posterity. LOL.