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Member postings for not done it yet

Here is a list of all the postings not done it yet has made in our forums. Click on a thread name to jump to the thread.

Thread: New or Old Super 7?
16/08/2018 14:26:54

Its already a hundred and fifty quid cheaper if is offered elswhere....

Find out where, and see what he is really wanting for it.

I would still buy a Raglan 5”, in very good condition, for probably less than that starting price....

Edited to note that a QCGB would make this one a good deal dearer!

Edited By not done it yet on 16/08/2018 14:29:06

Thread: Lathe tool angles
14/08/2018 08:27:36

Single point screw cutting and angles of finished article are the only angles I particularly worry about (as in ‘measure’ them). The rest are close, if necessary, but not critical. We often don’t use ideal metals so ideal cutters are irrelevant for most of us.

Thread: Help to select and lay concrete reinforcing mesh
14/08/2018 08:16:22

Nay, ignore the posts which are not referring to damp proof membrane. Damp proof membranes are plastic sheets, not steel in any form.

Thread: Colchester Chipmaster what to check for
13/08/2018 15:58:12

On something as expensive as that, I would be paying cash on collection and inspecting it before taking a chance. It would then be my judgement to blame, if I got it wrong.

I would have walked or negotiated, dependent on my feelings at the time. As it is clearly not as advertised, I think I might well have thanked him for wasting my time and walked away. I hope you have actually got sufficient value in the end, but somehow I think it will cost you more money than an honest alternative. I wouldn’t be surprised if the head was not off his ‘working’ lathe.

Sorry to be gloomy, but those are my thoughts on the matter.

Edited By not done it yet on 13/08/2018 15:59:09

Thread: fantastic service
13/08/2018 10:36:42

Certainly no more opportunistic than adding yet another customer to his list, or perhaps an existing customer who will go to Arc, as first port of call, rather than a competitor.

The thread may just be a comparison between suppliers or as a bit of a downer for one in particular (in this case). It might be remotely possible that the first-mentioned company might make a greater effort, next time, as it cannot leave them in the most favoured light...

Definitely full marks to Arc. I will freely admit that my trade is more often directed towards Arc these days, although I have never had a problem with Warco either.

Thread: ; Duplex Nibbler: sourcing replacement blades
12/08/2018 20:53:08

Have you not enquired to the suppliers? Seems the sensible place to start.

Thread: Adept and Super Adept Register
12/08/2018 14:23:34
Posted by Andrew Tinsley on 12/08/2018 13:02:25:

Hello RevStew,

Don't you mean swarf collector, mine never gets the chance to get dusty.

Andrew.

Were fymords that expensive when Adepts were still a popular purchase option , for hobbyists, back then?

Thread: WM18 Earth Fault - Looks like Controller blew
12/08/2018 14:15:40

Personally, I can’t really undestand why anyone posts on here re in-warranty failures, except to warn others of the frailities of the machine or control electronics.

The first port of call should always be the supplier. Even if a weekend fault. Also, a record of the conversation, or otherwise exchange, should be retained for future use, should it become necessary in the event of further problems.

Unauthorised ‘fiddling around’ is a simple way to void any warranty.

This thread seems to be one of arming the poster with information as to whether the failure is common. How the supplier might approach the warranty claim is entirely up to them and no prior conjecture will alter that.

The replies confirming you should not interfere with it prior to contacting the supplier are likely the best replies you have or are likely to get.

It would seem that you have had, for whatever reason, a fault which was apparent earlier, but you failed to inform the supplier - until it has escalated tonthe point of complete machine stoppage. Not good for either party.

Thread: Reducing Volts and Amps
12/08/2018 04:06:26

Not been watching this thread, but do check the time allowed for maximum current (as opposed to ‘continuous&rsquo. Any controllers which do not state a time allowed at maximum current may well only withstand a very short term spike, without the circuitry letting out the magic smoke. That is likely the difference between cheap and better quality, but more expensive, controllers.

Thread: How would you fix this?
12/08/2018 03:52:50

A reverse osmosis set up is not really a water softener, per se. It is a water purification process. All ions, whether cations or anions, and virtually all organic material, is removed by passing the water, at considerable pressure, backwards through a semi-permeable membrane (which would normally operate in the opposite direction (passing water from a lower concentration of dissolved solids to one of higher concentration, without passage of the solute).

An ion exchange water softener - yes, the ‘normal’ type of softener - leaves the water with the same molar concentration of dissolved solids but with sodium salts, not the ‘hardness’ salts. These work at high flow rates at low pressure difference suitable for virtually full flow in a domestic water system. The flow rate of a reverse osmosis system is far lower in a domestic situation and usually provides only limited rates of flow for drinking/cooking purposes.

A reverse osmosis set up to provide treated water for bathing and toilet flushing would necessitate a quite large installation with costs far higher than simply exchanging the ‘hardness’ ions for those that do not cause the hardness problems.

Reverse osmosis is more akin to distillation.

11/08/2018 19:45:53

Spot on Dave,

It is why it is called ‘ion exchange’. Hardness ions are replaced in the supply by sodium (Potassium salts are a good deal more expensive than sodiom salts, so only used for specialist applications).

Regeneration of the resin is accomplished by removing the hardness ions and replenishment by sodium ions by virtue of a very high brine concentration being washed through the resin - and the brine is then flushed away, along with the Calcium and Magnesium ions.

As far as keeping the loo clear - yes, less limestone build up with soft water, but neither soft nor hard water kills toilet bacteria, etc. But water hardness chemicals are disolved in the water, so very little will be deposited on the loo - only where the water evaporates, leaving limestone scale. A similar chemical process as to the building of stalactites and stalagmites. Fairly simple chemical reactions.

Most reduction of skin ailments is more likely down to not needing chemical fabric softeners. Every little helps, for those that suffer skin problems.

 

Edited By not done it yet on 11/08/2018 19:46:54

Thread: Lead acid battery charging
10/08/2018 20:38:54
Posted by SillyOldDuffer on 10/08/2018 18:19:46:

Rather than a 2N3055 I'd go for a buck converter because they're so cheap these days.

As John suggests a 6v side light bulb (15W) in series will also do the trick. Keep an eye on it though, as the battery charges, the bulb will dim. Once that happens disconnect. If you don't the voltage on the battery will rise to 12V and do the plates no good if left for too long.

Dave

I still have a few BC107/8/9 and 2N3055 transistors knocking around.smiley A zener diode across the battery would avoid too much gassing (which would be enemy number 1), should the battery voltage rise too far?

Thread: How would you fix this?
10/08/2018 20:28:28

And it is ‘softened’, not soft.

Only when it has gone through a ‘softener’.

Calcium and Magnesium, as dissolved salts, are likely (on balance) better for us than extra common salt, or nothing at all, in the supply. Brewers like some calcium sulphate in their brewing water supply, as well.

Thread: Lead acid battery charging
10/08/2018 17:47:13

Plenty of ways to do it. I would use a 2N3055 power transistor with a potential divider across its base ( but with a few more components). Likely only applicable to floating an already charged battery, mind. There are voltage regulator chips out there these days.

Thread: Issue 269 Temperature Controller Article
10/08/2018 10:25:37

The sooner we all use the Kelvin temperature scale in all technical articles, the better.smiley

No problem with zeros, noughts, ‘O’ s, sub- or super-scripts, degrees, Celsius, Centigrade, Fahrenheit, Reamur, Rankine, Absolute, any abbreviations of the preceding temperature scales, or anything else. Just plain K after the number.

Thread: How would you fix this?
09/08/2018 12:25:02

If you go the whole house route for a water softener, consider plumbing in the loo (as well as the drinking water supply before the softener) straight from the mains. It will save you a lot of salt.

Thread: How much power do you use?
09/08/2018 11:39:45

I have a variable speed lathe with a constant speed drive. I simply speed it up, if I am time constrained, until I know the motor is working hard - provided the finish, etc is satisfactory.

The mills are treated likewise, but kept at a reasonable load to lengthen end mill life.

One would not run up to full speed in the highest gear until the lube warmed up, during times of single figure temperatures (Celsius), when it was fitted with a single phase motor, but that was likely a speed/power/torque issue combined with the start windings not providing sufficient ‘kick’ at start u, so the motor could not reach full power.

The diameter of your fly cutter may well affect the average current drawn - the fly cutter would not be cutting for half the time, at least.

Lubricating oils have a working temperature range. It is likely that 10 minutes running time is unnecesssary at this time of the year - it only needing a little time to properly lube everything in the box.

My old tractors required only SAE 90 gear oil in winter conditions, but SAE 140 was required during the warmer months. Modern oils with wider viscosity/temperature ranges can be substituted these days, of course, in many cases.

Thread: How would you fix this?
09/08/2018 08:15:43

I suppose we have to assume your water supply has a fair degree of hardness? Without a profile, we are unable to gain any idea of the water supply chemistry in your area. There is possibly a case of just not needing a water softener at all.

Thread: UK Model Engineering group on Facebook
07/08/2018 10:55:15
Posted by Russell Eberhardt on 07/08/2018 10:23:44:
I suppose my original question was really enquiring as to what advantage a FB group has over a forum.

Ian P

I think the biggest advantage is for Facebook so that they can collect your details for selling to advertiserssad

Russell

Too intrusive. They want to know everything about you that they can accumulate. Yes, they sell data - but also, it seems, lose personal data too.

I will not touch ‘twitface’ for as long as I can manage without - not even with a long barge pole! Too risky.

Thread: Crankshaft repairs
07/08/2018 09:54:57

Perhaps a shrink fit might be more appropriate in this century? Liquid nitrogen is relatively freely available these days.

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