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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: Surface Mount Switch
17/10/2019 09:42:09
Posted by peak4 on 17/10/2019 01:49:44:

When you're looking for something generic, rather than specific. it's sometimes useful, when using Google, to go for Image, rather than the normal default text output of the results.

It's much more like thumbing through an old paper catalogue so look for something that fits the bill

e.g. NVR Start stop which quite quickly leads to a variety of sources. e.g. ebay

Bill

That's very interesting but I can't seem to replicate it. How do you get the option of text or image? All I can see when I try is the text version. What am I missing?

Doug

Thread: Changing internet providers
11/10/2019 20:54:35

Yes Emgee I am on fibre broadband, but to be honest they have raised my broadband speed twice and I hardly notice any difference. I will do my homework then ring Virgin and see what they can offer. Trouble is moving provider can be a hassle and they may just say:- we don't want you if you are not prepared to pay the full whack.

Doug

11/10/2019 18:02:31

I changed to Virgin a few years ago and the price was good for the first year but it has shot up every year since. The increases have always been much greater than inflation and I am now paying over £50 a month for internet and landline, with phone calls on top of that, and their not cheap either.

I have been thinking of changing provider but may just ring them up and threaten to move and see if they give me a better deal.

Doug

Thread: Myford ML10 spindle crank trouble
05/10/2019 15:35:38

I use a similar crank on my Speed 10 lathe and find I use it for almost all the threads I cut. Even at the low speeds obtained with the crank, carbide threading inserts work very well. It is a good idea to switch the lathe off at the mains when using the crank in case you accidentally turn the machine on with the crank still in place (yes I have done it but fortunately I use a three phase inverter with a ramped start speed and my quick reactions ! )

Doug

Edited By Douglas Johnston on 05/10/2019 15:36:58

Thread: Aldi Metal Bandsaw
04/10/2019 19:06:11

I also decided to buy one of the Aldi portable bandsaws and must say it seems very well made. I wasn't expecting too much at the price but I have been pleasantly surprised. In particular I expected the base to be pretty flimsy but it is a decent steel pressing and the vice, while rather basic, does seem to work ok.

The blade supplied also seems to be a quality one and at first I thought there was no joint in the blade as none was visible, but on closer inspection an almost invisible join can be detected. Overall it does seem a good buy, I just hope my initial impression is justified after I have used it for a while.

Doug

Thread: Alternative metal sources?
23/09/2019 09:33:24

Old cast iron brake discs provide very nice material as do flywheels. I have used an old flywheel as an anvil for years. When I scrapped my induction hob I collected a mass of electronic stuff and also a couple of huge aluminium heatsinks. Like some others I collect other peoples throwouts. Old stuff is usually better since more modern stuff tends to use thinner metal and less of it.

Doug

Thread: Engraving
18/09/2019 16:04:50

Thanks for that Ron, nice and simple and seems to work well. I suppose if it rubs off after exposure to cutting oil etc after a while then a quick touch up will cure that.

Doug

18/09/2019 09:28:13

That is very nice engraving, can I ask what was used to fill the engraving to produce the nice black lines.

Doug

Thread: Screw cutting is over complicated
16/09/2019 20:00:29

It is interesting that nobody in the workshop with Ruby is wearing safety glasses. I suppose that was quite common years ago but it did make me shudder.

Doug

Thread: Stuck oil filter
12/09/2019 17:31:24

That freezer idea sounds interesting Paul, I would never have thought of that. I think I have a can of that lurking somewhere and will give it a try next time. Also chains and ring spanners as mentioned by Charles could provide an answer. Any more ideas out there?

Doug

Thread: PayPal Warning
12/09/2019 15:26:21

That is very disturbing Chris, I must keep an eye on my own PayPal account. You would think it was impossible to do that and PayPal must know who the perpetrator is. I hope they take action against the fraudster, but perhaps that is expecting too much.

Doug

Thread: Stuck oil filter
12/09/2019 15:17:35

Thanks for that idea Sam, I will give that a go next time but rather suspect it might be difficult since there is not much room around the filter to wedge in the stick or metal lever. I wonder what the professionals do when the filters are stuck, probably just brute force at the end of the day.

If I had known there was going to be a problem I would have got one of the special large sockets that fit on to the 14 sided bumpy bit at the end of the filter, but it is too late for that now since that end of the filter is now a bit mangled.

Doug

12/09/2019 13:32:18

Thanks for all the replies, here are my thoughts,

(1) Too late for those that said don't run the engine. Before I changed the oil I had a good look inside the new filter I had bought as a replacement and was pretty certain that the distortion of the old filter could not have caused any internal damage. The bottom part is just empty space.

(2) The modern filters are definitely made of thinner metal. I also remember older ones being much sturdier.

(3) I did consider the screwdriver through the filter idea,but that creates a problem. What happens if it does not work; you have the car up on ramps and a punctured filter which means you can't run the engine. Apart from that the limited access would make it difficult.

(4) Yes the lack of oil on the rubber seal when fitted seems to create this problem, but you don't expect professionals to omit this during an expensive service.

(5) The only answer is probably to pay up and let another professional gorilla do the next oil change. If I do that I will look for a place that does fixed price services in case they take a while to remove the bashed filter!

Doug

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

12/09/2019 09:23:38

I thought I would do an oil change on my 4 year old Ford Fiesta now the car is out of warranty. The oil filter is half way up the back of the engine with limited space around it. Got the ramps out and got the car up on them and drained the oil. All going well so far, then tried to remove the oil filter and found that a trained gorilla at the last service had put the filter on.

Try as I might the filter just could not be budged with all the weapons I threw at it. My final attempt was with one of those claw type filter removers that get tighter as you try to turn it. It did not slip but started to distort the casing and threatened to puncture it.

At this point I was well and truly stuck since I could not drive the car having emptied the oil so I did the only possible thing and added the new (expensive ) oil and left the old filter in place.

I wonder how wise this was but since I only do around 4000 miles a year I hope there will be no problem. Does anybody know of a good removal tool or technique for removing bashed filters since I will have to get it off next time.

Doug

Thread: Grinding your own lathe cutters
04/09/2019 13:47:00

I recently made a flycutter from an old damaged 6" faceplate which I had in my scrap box. I made a holder for my favourite TCGT inserts with the cutting edge at a radius of about 3" and then carefully balanced the whole thing. The result was a flycutter which could be run at around 500rpm and which gives superb surface finish. It also has the advantage that it will cover most parts without the cutting edge making any trailing marks.

Doug

Thread: Fixed steady use
03/09/2019 14:55:10

Put a short piece of the same diameter in the 3 jaw chuck (better still a 4 jaw ) and set the steady fingers with that. Change for the long bit keeping the chuck jaws slightly loose and place the steady at the far end of the bar. You can lift the top finger of the steady to allow the bar in then refit the top finger. Fully tighten the chuck and all should be well. I also like the idea of the cardboard to prevent chips getting trapped in the steady fingers.

Doug

Thread: Parting Off
30/08/2019 09:27:04
Posted by mechman48 on 28/08/2019 20:30:47:

Boiled engine fittings...surprise devil ? What gas mark ?

George.

Oh, come on, has everybody lost their sense of humour, I for one thought it was funny but perhaps that says more about me!

Doug

Thread: Grinding your own lathe cutters
18/08/2019 22:57:48

Martin- nice to know that the Chinese ones are worthwhile. If my stock ever runs out I know where to find more without breaking the bank.

Doug

18/08/2019 20:14:12

I'm glad to see that polished carbide inserts as sold for aluminium are making more fans amongst hobbyists. I have been using and advocating these inserts for some years but there always seemed to be a distinct prejudice against any carbide for hobby size lathes.

I was lucky enough to buy a whole bunch of these inserts very cheaply on ebay a number of years ago and have become more and more of a fan ever since. The ones I got were top quality branded ones but I notice that you can buy this type of insert very cheaply from China. I don't know if the Chinese ones are any good but they must be worth a punt.

It is the sharp edge and high positive rake that makes all the difference on a small lathe. You can feel them slicing through metal with very little effort and I have found they work very well on all types of metal including hard steel and cast iron. They are also an absolute delight for boring.

Doug

Thread: New Milling Machine
13/08/2019 20:04:52

For years I used a mill without a DRO and thought it was fine. I then fitted a decent quality DRO and I was delighted with it. Apart from the instant swap between imperial and metric, the time saving is considerable when finding the centre of work, or returning to an exact location etc. Once you have one there is no going back !

Doug

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