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: Tool post for Myford ML10 lathe|
If using a quick change toolholder on an ML10/Speed 10 the tool shanks have to be around 8mm high to fit for centre height.
I agree with Steviegtr about ditching the HSS route. Get some of the polished sharp carbide inserts designed for aluminium and use them for everything and you won't go far wrong. HSS has its uses but if I was just starting out now I would not make life more difficult than it needs to be by grinding my tools from HSS blanks.
|Thread: Delays in Shipping from China|
The postman has just delivered a package from Hong Kong which has not been delayed, so perhaps they are better off than mainland China with regard to delays.
I think we need to be very considerate with Chinese traders, the situation must be very fearsome with the virus showing little sign of tailing off.
|Thread: Emcomat 7|
Dave has summed up the situation rather well I feel, and in a way I will have a similar situation at a local auction tomorrow. There is a rather nice small unimat lathe in the auction and I rather fell in love with it at the viewing. Do I really need it, will it do anything my current lathe can't, is there a space for it in the workshop? All the answers are in the negative, but none of that will stop me bidding for it. Sometimes the heart should rule the head so I might just get carried away at the auction.
|Thread: How do I change the "default" lever angle on my Verdict DTI?|
I have a couple of these indicators and I thought for years that one of them could not be adjusted and just had a fixed angle. It turned out that it was just really stiff and I was never brave enough to give it a good push. Perhaps it just needs a little more brute force, but it does take a leap of faith to manhandle delicate instruments.
|Thread: Ink jet printer woes|
After many years of dodgy inkjets I also switched to mono laser and would never go back to an inkjet. I thought I would miss colour printing but apart from a few odd occasions it has not been a real disadvantage. My local library has a colour laser for public use so that is handy for the odd time I need colour. The toner cartridges are expensive but last for years with minimum use. When my last cartridge was empty I found I could buy a new printer at a sale for less than the price of a replacement cartridge.
|Thread: Home made T&C jig|
I was recently needing a device to produce a fine feed for a grinding set up and had a look at a cheap way of providing an accurate feed. A look on ebay provided a micrometer head with a rounded spindle for about £5 from China. I have bought one but may have to wait some time for it if air transport out of China is suspended during the current health crisis.
|Thread: What geen grinding wheels for tools|
I would not bother with a green wheel for carbide, diamond wheels work very well, are much safer, and don't cost a great deal. I have a couple of green wheels but have not used them for years and don't expect I will ever use them again.
|Thread: 4x6 bandsaw|
The good old 6 by 4 bandsaw is a great bit of kit when it works. I have had one for a long long time and they can be a bit temperamental at times. It usually comes down to keeping the blade tension up and adjusting the top wheel so that the blade stays against the flange of the wheel. As mentioned above there are lots of youtube videos and there have been some articles in MEW over the years. A decent blade also helps, I am not sure that the Screwfix blades are the best quality.
|Thread: Chinese DRO opinions|
That's true but a bulk supply to the likes of M-DRO is a different matter to sending out a single unit to a customer.
My concern about buying this kind of thing from China would be the quality of the packaging. The scales are quite fragile and it is a long way from China. I often buy stuff from China and the packaging is seldom good. If you get a broken scale it might be a hassle getting a replacement.
|Thread: To use chuck or collets|
The real pain is chuck changing. If you have the collet chuck fitted, chances are you need the 3 or 4 jaw or vice versa. There is no decent answer to this problem apart from muttering some favourite oath and getting on with changing the chuck. The collet chuck is more accurate but also more limited, so I would always go with a 3 or 4 jaw chuck first before buying a collet chuck. When you have all three it just increases the chuck changing problem, you just can't win!
|Thread: Ebay being clogged up by certain sellers|
|Thread: Australian Bush Fires|
This is one of the main items of news here in the UK. The situation seems dire and perhaps it will make more people take climate change more seriously. I can only imagine the terror experienced by people caught up in the fires.
|Thread: Cheap gear cutters from China|
Thanks for that link Jens Eirik, it looks as if the cutters are made in a decent factory rather than some backstreet outfit.Have you tried cutting steel with your cutters, and if so how well have they stood up with regard to wear?
That is interesting Jason, as long as I stick to aluminium they should be fine for letting me try out gearcutting. They do also look quite easy to sharpen, so even if they do blunt quickly they can be touched up to give extended service.
I forgot to mention the ebay number which is 162447654385
I have just received a set of 8 gear cutters from China via ebay and I must say they look rather nice. I have wanted to try gear cutting for a while but could not bring myself to pay up a lot of money for something that would not get a huge amount of use.
I took a punt at the Chinese ones, not expecting anything great, but I must say they do seem well made. I have not used them yet so this is just a first impression, but at about £38 for a set of 8 cutters they do represent good value provided they cut well.
The workshop is a bit cold at this time of year so I will have to wait a bit before trying them out, but at least I can sit in the warmth and look at them!
|Thread: Merry Christmas Everybody!|
With 2020 vision I hope we all can see a bright future. Even Brexit (sorry! ) might look better.
|Thread: Scam alert|
Just noticed this thread, I have also been getting these calls saying Amazon was about to take money from my account. This just started up after I bought something from Amazon and they said they were giving me a free trial of Amazon Prime. I did not want the free trial and searched the page at checkout to stop it, but it seemed I could not opt out. I nearly cancelled the order but reluctantly went ahead. I later checked my account with Amazon and found I had not been signed up to Prime and did not need to cancel. Then the phone calls started (about 6 so far ), so it would seem that Amazon has a security problem which I do hope they are taking seriously.
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