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Member postings for jon hill 3

Here is a list of all the postings jon hill 3 has made in our forums. Click on a thread name to jump to the thread.

Thread: Low Tech Magazine
14/04/2021 22:13:21

Yes I must agree with you Martin, the fish treated sewage lake did not make any sense, however I have heard of reed beds and other bio-remediation projects which work very effectively.

Somewhere on the site there is an article on the Paris compressed air network, which if memory serves correct was only discontinued in the 1990's, 100 years of service is pretty good!

13/04/2021 20:47:10

Following on from the Museum of Retro Technology I thought people might like the topics covered in this ezine. Lots of ideas ancient and some modern of a mostly low tech variety.

Be warned you can waste days on this site!


Thread: Anodising and Passivating
13/04/2021 19:51:32

Can anyone explain the difference and what properties these processes add to commonly used metals?

Thread: Citric acid pickle
13/04/2021 19:31:13

Back when I used to home process 35mm colour film I in my trusty jobo automatic I would buy a mystery cleaner which turned out to be plain old citric acid! The supplier only listed the chemical formula, probably due to the 10x markup.

Going down to the chemist sure saved me some cash.

Thread: Face Knurling...
12/04/2021 13:12:59

Thanks for clearing that up, one more related question: if you mix stainless with ordinary steel will the ordinary steel corrode more just like a battery?

12/04/2021 11:40:50

As oily Rag has mentioned about the dangers of stainless in high stress applications such as motorcycle wheel nuts can anyone give me some data.....

I dont doubt what people tell me but I like to see the data and context, also it seems to me to be a sweeping generalisation to lump all stainless steels as dangerous for such uses as motorbike wheel nuts.

Thread: Can any of you guess what this is from?
11/04/2021 22:36:14

At a guess something to do with printing or book binding, judging by the presses on the floor?

Thread: Face Knurling...
11/04/2021 22:31:51

I did not know that stainless wheel nuts could cause problems or chroming of motorcycle frames.

While we are on the topic of exotic metals for wheel nuts I have noticed that a certain well known auction site has anodised aluminium wheel nuts for cycles. Should I be more worried about these as alleys record for metal fatigue is surely more of a concern than stainless on a pushbike even if it is used occasionally off road?

11/04/2021 11:25:52

Thanks Jason

What about hard steels such as 316 stainless, would the knurler work as well? I presume the above is aluminium..

Thread: Spindle thread wont engage ml10...
11/04/2021 10:55:57
Posted by Manofkent on 11/04/2021 08:08:45:

This happens a lot on my lathe (an ml10 coincidentally).

The chuck has to be pretty well exactly aligned to screw on.

I put a squared blank in the tailstock, and gently hold this against the chuck jaws , then the chuck will screw on.

The blank is about 1" dia. I guess you could just use a flat bit of metal to the same effect.

Worth a try


Great idea John, I think I have a tailstock drill pad that might work.

As others have said I will check the threads for swarf and perhaps chamfer the thread on the backplate.

Thread: Face Knurling...
11/04/2021 10:50:02

I was toying with the idea of making some deep fit acorn style cycle/motorcycle wheel nuts as I cant find a supplier for 3/8 bsc 26tpi x 20mm deep.

I thought it might be a simple project however with commercial wheel nuts they often have a serrated edge to retain on the fork. I know I could use crown washers or some similar option however how would I go about knurling or serrating the face of the nuts?

Thread: Spindle thread wont engage ml10...
10/04/2021 22:30:23

I bought a myford backplate for proxxon chinese 4 jaw chuck last august and successfully machined it to fit. However trying the chuck and backplate now it is very tight and I cant get it to thread on any suggestions...

Thread: (bicycle) thread identification?
09/04/2021 23:21:34

Just out of interest the cycle im working one is only 6 yrs old. I am sure it is not the only new-ish cycle using imperial fittings.

09/04/2021 23:02:41

Thanks for all the help everyone! Note to Nigel my Whitworth thread gauge seemed to fit hence mistaken for such.

Again a book or website recommendation on threads going into pitch, tpi, history etc would be very helpful.

Thread: "TINKER" tool & cutter grinder
09/04/2021 11:03:47

Hi Sam

If wiring the money is a problem with your bank open up a Transferwise account, foreign exchange fees are minimal as it is set up to match people who already have the currencies necessary.

By the way I think Transferwise are now called Wise.

Thread: (bicycle) thread identification?
09/04/2021 10:50:52

I got roped into servicing a friends cycle and along the way of ordering new parts I thought it might be a handy to have a primer on thread identification.

In this instance it was a set of replacement wheel nuts which if my measurements are correct are 9.5mm (3/8" x 26 tpi whitworth. I am aware that there are hundreds of thread types usually identifed by a 3 letter abreviation eg bsf, unf, bsp etc.

Is there a handy reference ie: book, ytube video, website....

Thread: Machining a replacement jacobs style chuck key?
19/03/2021 12:03:53

I just bought a 2nd hand Jacobs style chuck without its key, a Porta AGP 1.5-13mm. I know the sensible option would be to take it back or ask for a key to go with it which I may still do.

Out of curiosity what would be involved if I wanted to machine a replacement key?

Thread: Pictures in posts and font sizes.
18/03/2021 13:00:57

Phil raises an intersting point on font size as I have tiny fonts in the messege box. By the way Im using windoze 7 and Brave browser.

Thread: Gasket jointing compound
18/03/2021 11:22:49

I use Reinzosil on my car so I am sure it would work just as well for steam, however having a look on ebay Hylomar Blue is cheaper. I expect this is due to one being manufactured in the UK and the other costing more due to carriage and duties from Germany.

Thread: Axminster tools to discontinue their engineering courses.
16/03/2021 18:53:27

This brings up an interesting issue on the relative dangers of wood and metal powertool usage. I am guessing that Axminsters decision is not based on H&S. In my mind the chances of an accident with woodworking powertools are greater than with metal pwertools, angle grinders excepted.

For example objects flying off a wood lathe or accidents with all types of circular saws.

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