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Member postings for Douglas Johnston

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

Thread: Diamond Lap for sharpening Brazed TC tools
06/08/2020 11:39:55

How long before the crocodile clips touch, but the idea is great.


Thread: The making of Steel Balls
05/08/2020 11:58:21

No wonder quality bearings are so expensive. So many corners to cut with cheaper bearings. The balls from quality bearings make excellent references for checking micrometers etc.


Thread: Using Counterbores
22/07/2020 14:23:17

I had the same problem with a couple of my counterbores in that I did not have the correct size drill before using the counterbore. I simply solved the problem by holding the counterbore in an accurate collet chuck and used a sharp polished carbide cutter insert to reduce the diameter of the front part of the counterbore. Worked a treat on the hard HSS and left a mirror finish. It never fails to amaze me what you can do with this type of carbide insert.


Thread: Stuck oil filter
09/07/2020 11:20:27
Posted by Douglas Johnston on 12/09/2019 13:32:18:


ps I will report back in a year after the next oil change If we are all still here!

Edited By Douglas Johnston on 12/09/2019 13:38:16


I did say last year I would report back so here goes. I spent ages trying to remove the oil filter using as many techniques and tools that I had available and failed to budge the filter. Moving on to this year I thought I would make a special tool to complete the task. After a good rummage in my collection of bits and pieces I unearthed the outer casing of an ancient car dynamo which had just the right inner diameter to slip over the oil filter.

The casing had a wall thickness of about 6mm which was ideal for tapping two rings of 8mm holes for grub screws. The top end was fitted with a 75mm diameter disc of 10mm thick steel which had a 1/2 inch square hole put in to accept a ratchet bar. By screwing in as many grub screws as I could reach I got a great grip on the filter casing and the filter was easily removed. Job finally done!




Edited By Douglas Johnston on 09/07/2020 11:23:32

Thread: Yipee the F1 is back on
28/06/2020 20:49:09

My only hope is if C4 in UK shows highlights since I don't have Sky.


Thread: machining acetal
19/06/2020 14:23:07

Any sharp endmill will cut acetal without a problem. It is lovely stuff to cut and gives a very nice surface finish. Just play around with speed and feed to get the best result.


Thread: R8 or morse taper 3?
12/06/2020 11:01:58

I would bet that most people who have changed from Morse taper machines to R8 would not want to go back. I used a Morse taper machine for many years before getting an R8 one and there is just something about the R8 spindle that makes it much nicer to use.


Thread: Hermes Parcels
12/06/2020 10:46:29

The postman has just delivered a small package from China that was ordered over 3 months ago, so there is still hope for anyone else waiting for a delivery from China. I had given up any hope of receiving the item so am well pleased.


Thread: Soldering Iron
31/05/2020 13:03:03

I bought a Hakko soldering station a year or so ago and like it a lot. Not cheap but warms up very fast and is the best soldering iron I have had.


Thread: garden chair, wooden slats broken.
18/05/2020 19:07:28

I had to replace a couple of the slats on my garden seat a few years ago and just used some handpicked softwood from the local B&Q store. A treatment with some cheap wood preservative and left to weather for a while and the result was very good and soon matched the much older original slats.


Thread: Myford ML4 gib strips
07/05/2020 09:47:24

When I made some gib strips a few years ago I used gauge plate and did as Jon suggested to flatten one surface. Incidentally the thickness of the strip does not need to be perfect since the back face is only in contact with the gib screws.

One other thing I did was to cut the ends with a sharp endmill (a new carbide one in my case ) so that the end edges in contact with the slide had no discernible rounding. This helps to prevent any fine chips getting trapped between the gib and the slide.


Thread: Face mill prices
11/04/2020 09:43:52

I bought a 50mm and a 63mm one and R8 arbor from ARC after I saw the review in MEW. The quality is superb and belies the low price. I also bought some of the ground and polished inserts and they too are excellent.

The only problem now is the lack of availability due to the pesky virus.


Thread: Arc Euro and Coronavirus
31/03/2020 09:57:07

Just seen the latest email from ARC telling us they are closing for the duration of the pandemic. The picture of the last bog roll in the country did make me smile though. Things must be getting bad if we have no more ARC for the time being. I do hope the lifeline of MEW can keep going to keep me on an even keel.


Edited By Neil Wyatt on 31/03/2020 16:40:44

Thread: What to use for New Worktop?
20/03/2020 09:33:19

Thick kitchen worktop is hard to beat, you can sometimes get slightly damaged ones at a good price from local diy outlets ( I am often amazed at how many they seem to damage during transit or inside the store ). Good sturdy wooden framework under the top, don't use the flimsy kitchen units. If mounting a small lathe, a concrete or granite slab on top of the worktop gives a very good rigid base on which to mount the machine.


Thread: What are you reading?
20/03/2020 09:10:06

Just got my latest copy of MEW to keep me happy for a short while in between reading through all the Tom Thorne novels by Mark Billingham. Not my normal reading matter but was given the first two Wolf Hall novels a while back and really enjoyed them. Very sad to see the death toll in Italy is now greater than China, this is a year none of us will forget in a hurry.


Thread: Reeves and Coronavirus
14/03/2020 09:27:06

Moves like this are very welcome but don't think things are going to get better soon. Current predictions show that we have many months of disruption ahead of us. I don't wish to sound too gloomy but this is going to be one hell of a ride. Good luck!


Thread: Complicated post
07/03/2020 10:42:05
Posted by Ketan Swali on 07/03/2020 09:16:20:

Keeping what I have said above in mind, I hope you will agree that you will be better served for your machine requirement with WARCO, Chester, WABICO, as all three have models which already have a very longer history, rather than the SX3.5DZP which has just come to market.

My goodness, you don't often get that degree of candour from dealers. Arc are clearly considering the long game, and I for one applaud that.


Thread: Blacking hot steel in oil
05/03/2020 09:19:01

Used engine oil is nasty stuff and best avoided. I tend to use supermarket rapeseed oil which works very well.


Thread: Powder coating
02/03/2020 21:16:34
Posted by Chris V on 02/03/2020 20:32:29:

We had two radiators at different times powder coated and both are flaking paint off, never again!


I see I am not the only one to suffer this. Half an hour ago I was painting a section of a bathroom towel rail radiator that had been powder coated. Just as described above a small crack in the coating has resulted in the coating starting to peel off over an area of a few square inches. I am hoping that some radiator paint will halt the peeling.


Thread: Cautionary tale
27/02/2020 09:42:01

I would be very wary about ordering anything from China at the moment. With the shutdown of large areas due to the virus and restrictions on flights it could be a bit of a lottery. I have a couple of small items that were ordered a month or so ago and I don't expect to see them any time soon. However, my slight inconvenience is of no matter compared to the struggles to contain the virus. The whole world could soon be in the grip of this virus and it seems to target old people like myself and probably many on this forum, so we should all take care.


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