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Member postings for john halfpenny

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

Thread: Crankshaft Factory
03/10/2021 22:34:39

Yes MichaelG, of course I saw 'Belarus' on the box, but your post doesn't answer the question

Thread: Small Hydraulic Press Tools
03/10/2021 14:59:12

Here is another lockdown project made from scrap. The return force is by loops cut from car inner tube.


Thread: Tool Chest
03/10/2021 14:43:22

&Here is a pallet wood 'Adirondack' garden chair made during lockdown


Thread: Crankshaft Factory
03/10/2021 14:37:28

I believe there is a factory in Pakistan making MF240 clones for Africa and the Far East, and these would have 3 cylinder diesel, likely a Perkins copy. The quantity being made would indicate mass production. Not sure what the Belarus connection is, though there is a very large tractor factory in Minsk.

Thread: Back to Imperial
17/09/2021 18:58:27

But the government will use this to divert the public from real issues, like what is the care home policy ? Can I have a chocolate biscuit please matron.

Thread: Tightening a Threaded Bolt
01/09/2021 16:24:55

From memory, shouldn't it be a shouldered bolt, ie plain portion larger od than the threaded portion?

Thread: To Cap It All
28/08/2021 10:05:05

Vintage radiator threads are, in my experience, all over the place, but a Model A Ford is about 16tpi ( much larger od though). This Ford thread would certainly be 60 degree form. Vintage Vauxhall is much coarser at 8tpi.

27/08/2021 11:11:52

I was taught (and it seems logical to me) that a macine screw is the generic term, and so called to distinguish from other types, such as wood screws. A bolt is one subset of machine screws, with plain portion of shank. A set screw is another.

Thread: Keeping the workshop cool
22/07/2021 20:47:54

Going back to the op problem, I would create a through draft by putting some kind of opening opposite the door - opening to be closable of course. Openings on opposite walls usually create a reasonable air flow, though it might be from the sunny to the shady side. Flow might be fan assisted, maybe with the door 80% closed.

Thread: Midlands Model Engineering Exhibition 2021
19/07/2021 22:18:16

A small very crowded venue full of folk in the vulnerable categories. Notwithstanding vaccination, a sensible decision.

Thread: Template for Cutter Teeth Indexing Table : Patent
16/07/2021 15:58:59

Still true John.

16/07/2021 15:31:00

Patent law is not the same in all countries, though in Europe it has been somewhat harmonised since 1978. US patent applications have always been filed in the name of the inventor(s), whereas elsewhere the owner is the applicant.

16/07/2021 13:48:50

There are lots of reasons why a patent application would be filed, even for what may seem to be a trivial invention (btw, this is a patent of addition). One might be to establish whether the inventor was entitled to a monetary award.

16/07/2021 11:03:36

Why intrigued?

Thread: Anyone know what is going on at Homeworkshop?
06/07/2021 09:33:48

There is an update on the site now

Thread: How to repair damaged lawnmower drive
04/07/2021 16:40:42

Mig and file. Once it is a tight fit your problem is solved.

Thread: Easy Start
28/06/2021 20:47:24

Martin has it. Engines do not become addicted to Easy Start, they are simply worn to a state where starting is difficult in adverse (typically cold) conditions, and will not start without it because their mechanical condition does not improve over time.

Thread: DIY Hydraulic Press
11/06/2021 08:33:34

They knock in easily with a stepped drift if properly dimensioned, and using a fridge to cool the guides and an oven to warm the head

Thread: Can you recommend a UK supplier for good quality "mill board"?
05/06/2021 13:07:03

Traditional millboard, as formerly made by eg Jacksons of Bourne End, was a paper based dense material and quite difficult to cut. It was typically used until the 1970s for parcel shelves and untrimmed door cards for cars and trucks. Usually plain grey on one side and slightly embossed on the other with a hard wearable finish. Woolies sell the best alternative that I have found, but the term now encompasses a variety of substances.

Thread: Window on the World?
05/06/2021 12:54:21

My vintage car has a simple lucas switch to earth the lucas mag points, and thereby stop the engine. OE fitment on the low tension 12v side - works perfectly.

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