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Member postings for KWIL

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

Thread: Myford Super 7 Tail stock problem
07/05/2020 10:46:46

+1 for Gray's method. This cap is intended to be a close fitting item and ANY defect in handling may cause it to stick. Even not putting the item down carefully can just turn the thread start. If it came out smoothly it will be possible to put it back in the same manner. My own S7 tailstock caps are a snug fit.


PLEASE take no notice of non expert advice that suggests attacking the item with a hacksaw blade, butchery to say the least

Edited By KWIL on 07/05/2020 10:49:58

Thread: Delrin adhesive type.
29/04/2020 09:07:57 ?

I have used Bondloc DTB adhesive on delrin assemblies, some included a metal component, trying to simulate a previously metal/delrin moulding, so far so good but under light load.

Edited By KWIL on 29/04/2020 09:26:14

Thread: Carriage movement varies along the bed
28/04/2020 14:04:23

The under side retaining plate is shimmed to give a nominal clearance, they should never touch such that any drag is possible. In use the pressure is downwards mainly onto the top of the shears only.

Check the shears with a micrometer, front to back and top to underside, these measurements will show where the wear is as set out in previous postings.

If a bed is reground, the carriage also needs to be done to match (reason - top of shear to leadscrew centre is reduced by grinding the bed)

27/04/2020 11:29:36

Part of the problem comes from foundries that kick open the cast just as soon as they can, best left to cool in the sand until easy to handle, earlier ensures you get stresses and chilled areas. Perhaps a good rusting allow the chilled areas to rust away!

Thread: Parting tool material
26/04/2020 15:30:29
Stellite is a hard coating applied to valve stem tips and faces to provide a hard surface, to minimize wear. Stellite alloy is a non-magnetic and non-corrosive cobalt-chromium alloy that may also contain a tungsten element.
Was/is used for IC engines
Thread: What thinner for Trimite enamel?
26/04/2020 15:22:55

I think it is their Q78 alkyde resin paint, have used it (Q78) on other things and although they have their own thinners (CT60), I used white spirit. For spraying up to 15% added.

Mason Paints (late of Derby) also sold Myford Green paint and was a similar product.

Thread: Painting cast iron - What have I done wrong?
26/04/2020 15:02:14

Whoever thought that relaxation of environmental legislation had anything to do with leaving the EU?

Simply put, to escape being told by Brussels what to do and to avoid a United States of Europe.

As for wanting to trade, the same applies to any country you want to trade with, you have to match their rules, which of course differ around the world.

Thread: Laser alignment
25/04/2020 14:52:26

I have looked at the use of lasers, but, for me the width of line is far too much, you are left with guessing the centre of the line.

Thread: Blot On The Landscape
24/04/2020 15:48:23

How would you upgrade existing routes using the same tracks? Longer trains, faster trains, more trains,merely slow down the network due to safety spacing.

Thread: Whatever happened to...
22/04/2020 15:03:11

Then there was the cans of dried egg (origin USA). Tapioca was fine, (fish's eyes and glue as I recall it being called). Nice rabbit to eat.

Thread: Mill Wobble
22/04/2020 14:53:00

I agree with Duncan, not fit for purpose.

Incidently, the pin in the R8 taper only needs to protrude enough to catch the slot to assist in holding the item during the drawbar tightening. I have used an R8 taper without the pin (when one pin needed replacing). Worked OK.

Thread: Percival Marshall Speaks - Model Engineering Video
14/04/2020 12:04:19

Yes it is Derek.

Thread: Captain Tom Moore
14/04/2020 11:45:27

Originally his target was 1K !!

Thread: Could be useful - single phase vfd
13/04/2020 09:38:37

Download the relevant manuals from the RS site and you will find they are in fact 3 phase output as is usual for vfds!

Edited By KWIL on 13/04/2020 09:39:07

Thread: The good bits coming out of the Covid epidemic
03/04/2020 08:39:05

I have not had many nuisance calls anyway, perhaps they cannot find my number?

Thread: New design of mains plug?
01/04/2020 09:27:31

I have always used a well known UK brand, moulded from a very hard thermoplastic, Multi Kontact. I am surprised that the test refered to did not examine the internals of those cheap 4 way boards, the use of flimsy metal is an understatement.

31/03/2020 11:45:27

Each room has a double either side of each corner and also along the wall as appropriate. Kitchen has 11 for instance (yes not a small kitchen). There are 3 house Ring mains, day rooms ,kitchen and bedrooms. In addition the garage and workshop has a ring main (+ radials), Family and utility has another. These latter rooms are "downstairs" (sloping site). Lighting is similarly split and the security lights are also separate. Dual Dis boards up and down plus incoming master dis board which splits for both and also serves workshop radials. Not a rewire but built in during construction.. At last count there were 160 plus socket locations including the loft which service the aerial amplifiers. OTT maybe but why not?

Edited By KWIL on 31/03/2020 11:47:00

31/03/2020 09:13:11

If my house had to have a separate fuse for every socket radially, I would have to build another house to put them in!

I do not like trailing leads everywhere so every room has more than sufficient double switched sockets so that there is always one to hand.

Workshop is different each machine has its own spur, except the drill.

Thread: Boiler making advise
30/03/2020 08:40:59


Brian was merely pointing out that once a joint has been made, the reflow temperature is higher due to alloying. In this way it is possible to make joints one after the other using the same silver solder type. Not only applies to small boilers.


Thread: Still casting despite the Corona lock-down!
29/03/2020 14:42:41

David, you have a PM

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