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Member postings for Chris Gunn

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

Thread: Tools and equipment loan list/surplus list
15/02/2021 11:22:18

Rodger I have a standard 1 3/4 BSW tap, but that is 5TPI, I guess you are sure about the 6TPI so it is probably not much good to you. However now this thread has started, the right one may pop up.

Chris Gunn

15/02/2021 10:57:15

Thanks Brian and Rodger, my proof reader is having a day off today. Just for the record I started as an apprentice in 1959, and the lathes were made in WW1.

I am not sure how this works, does a moderator need to approve this suggestion? Jason??

Chris Gunn

15/02/2021 10:21:12

As my 77th birthday approaches, every time I go in the workshop I see bits and pieces I have accumulated over 60 years working in various engineering companies. I also realise that I will never get round to using some of this stuff, but it is too good to throw away, and all it needs is to find a good home. Most of it is not worth much and not worth the trouble of selling it.

I am proposing that there be a thread on this site where folks like me can list our surplus stuff, available for free, with the postage being paid by the recipient. This would avoid clogging up the classifieds with odds and ends.

Also there could be another thread where folks can list special, or oddball tools or tooling for loan.

For example, many years ago I aquired an old lathe that was reputedly made in quantity by the company I worked for during WW1. The crosslide leadscrew nut was worn out, and I was able to find a set of taps in the toolroom, which had been there for 50 years, to make a new nut. I was given these taps, and made my nut. I have had these ever since and will never ever need them again, but somebody might. The taps are 9/16" diameter Acme, 8TPI, LH. Out there somewhere there probably still some of these lathes working.

I cannot throw these away, hence the suggestion of the loan list, so maybe they will come in handy for someone else.

I suspect there are a few folks who bought taps and dies to make faceplates and the like for lathes they no longer own, who could add to such a list.

Chris Gunn

Thread: BSW 1 1/2 x 6
15/02/2021 09:14:58

John, I have a set of 1/1/2" x 6TPI taps you could borrow, but you will need a big tap wrench!!

Chris Gunn

Thread: Starting out a young enthusiast
14/02/2021 21:46:25

Viv, you could start him off with a simple o gauge locomotive kit, very basic assembly of pre-made components for about £250, Google O gauge live steam kits for some examples. this would not be too onerous or too difficult, but it should work which is important, and then go on from there.

Chris Gunn

Thread: M2 x 2mm brass grub screws - do they exist?
30/01/2021 22:09:03

Snap

Chris Gunn

30/01/2021 22:08:00

Robin, you are half way there with your shortening idea, just get a short piece of round or hex material 12mm long or so, drill and tap an M2 hole right through. screw the screw to be shortened into one end, leaving the end to be cut sticking out, then screw another one in to the other end to lock the first one in place, shorten the screw, chamfer the cut end using a lathe or even a bench drill , then remove the backing screw, then the shortened one.

Chris Gunn

Thread: ML7 left to run for 72hrs accidentally - what to check?
28/01/2021 22:21:21

William, it sounds that it could be unlikely that this could happen again. Just in case you could feed the lathe through a timer with just the off flag set at the latest time you are likely to need it. the timer will switch it off.

I adopted this for my compressor, I used to switch it on, and if it was not actually running. i would head inside leaving it on. Later in the evening the lights would slightly flicker when it started up again. The problem was solved by the timer.

Chris Gunn

Thread: Reamers
27/01/2021 20:33:11

Phil P, you could be right about that style, especially the really cheap ones. The David Brown ones are a a different kettle of fish.

Chris Gunn

26/01/2021 22:09:15

It seems adjustable reamers are getting a bit of an unjustified kicking in this thread, so to try and redress the balance, in my experience David Brown adjustable reamers were the reamers of choice at Timson's where I did my time, but as I recall just used in the lathes for reaming holes for ball bearings in gear blanks and the like. We had a tolerance of half a thou. We would drill, then bore, then take out about 10 thou with the adjustable reamer to size. The advantages of the David Brown type included the ability to adjust the reamer when it started to wear a little, and eventually sharpen the reamer blades, and eventually replace them when there was not enough to re-sharpen. I would imagine that solid machine reamers would not last that long machining the EN24 blanks, and replacement expensive while the David Brown reamers would be expensive to buy initially, but over thousands of holes would prove the most economical choice.

This is a different scenario to the modellers workshop I know, so I can understand why they are not used much there, but that does not make them a poor tool. I still use the few I have occasionally, useful for any odd sized hole that needs to be dealt with. If I did not already have them, I probably would not buy them.

Chris Gunn

Thread: South Bend Heavy Ten Fixed Steady
30/12/2020 11:37:45

Roger, I have some knurled screws that are 1/4" x 20 whitworth that would do nicely, they should fit OK, I will send some if you PM me with your address.

Chris Gunn

Thread: Colchester student oil
18/12/2020 22:19:38

Alex, I guess the oilers on your Student are the ball type oilers like those on my Bantam, if you search for ball type oilers there are plenty available. They are almost certainly Imperial, with the diameter of the oiler body determining the size. You can lever the old ones out with a screwdriver and just tap the new ones in with a hollow drift.

Chris Gunn

18/12/2020 22:18:39

Alex, I guess the oilers on your Student are the ball type oilers like those on my Bantam, if you search for ball type oilers there are plenty available. They are almost certainly Imperial, with the diameter of the oiler body determining the size. You can lever the old ones out with a screwdriver and just tap the new ones in with a hollow drift.

Chris Gunn

Thread: New scam to beware of
05/12/2020 21:30:32

R Johns, thanks for that, nice to know I am not the only one, I bet there are more out there, i will try and get a more sensible answer about this from the fraud folk, they ought to be aware, as if all the scammers do the same thing, the majority of recipients will not copy and paste, they will not bother if it is not easy to report the scams, and the scammers will win.

Chris Gunn

05/12/2020 20:34:31

I have had a lot of the BT scam emails, and usually forward these to report phishing who are in my contacts folder.

The other day I had another scam email, and attempted to forward it, but the computer said no. I tried several times and could not forward it. As a test I forwarded a couple of other emails with no problem, and went back to the rogue email, and again i could not forward it, so just deleted it. This is the second time I have had this experience. Has anyone else had the problem? Any one know if the scammers are responsible somehow? I did ask action fraud who did not seem to know or want to answer my question.

Chris Gunn

Thread: Next issue late?
26/11/2020 13:50:13

I am still waiting for a paper ME4652, did everyone else above get theirs?

Chris Gunn

Thread: Lidl Portable Bandsaw
01/11/2020 20:41:26

Ray, thanks for the heads up on the band saw, I would have missed it otherwise. I got one this morning, just 4 left in the shop, i will have a play with it in the morning. Can you share with us where the better quality blades you mention came from, if the moderators allow?

Chris Gunn

Thread: Mixed Metals
21/10/2020 22:08:37

Simon, crossheads are made from gun metal so they wear well, brass will not wear anywhere near as well, could you get a lump of bronze or gunmetal and use that?

Chris Gunn

Thread: Recycling Fire extinguisher pressure gauges
28/09/2020 22:09:21

Robert thanks for that, and Ian, I have not taken one apart yet.

I sought advice from the forum before I did anything, and as usual the members came up trumps, and saved me wasting time on this. I have 6 old extinguishers, still viable if the gauges are to be believed, and saw how to turn them into table lamps on Find it, Fix it Flog it the other day, and this led me to think about re-purposing the gauges as well.

Thanks to all

27/09/2020 20:09:05

Ian, I do hold the club boiler testing gear, including a calibrated gauge,.

John, I did not realise the gauge on the extinguisher was was a much higher range, I should have realised the contents will be at a higher pressure then say 100PSI to be effective. I guess that is why they use coloured sectors rather than indicate the true pressure. Also the construction of the body would point to a higher pressure than is useful to us.

Martin the boiler test includes checking the pressure gauge against the calibrated test gauge.


Chris Gunn

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