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Member postings for Alan Johnson 7

Here is a list of all the postings Alan Johnson 7 has made in our forums. Click on a thread name to jump to the thread.

Thread: Chuck Backing Plate
04/03/2020 06:31:32

Yes, they are available. ML10 has a standard spindle thread - I think, but you better check that!

OR you could make your own - if you have a faceplate. Lots of experience in plain turning and internal thread cutting. Setting up a pitch circle diameter and drilling and tapping the mounting holes.

Thread: Four Jaw chuck
02/03/2020 01:20:44

I use a digital DTI.

I roughly adjust job to required position, then using the DTI set it to zero at jaw 1. Rotate spindle 180 degrees (jaw 3) and the error is shown. Move job (at jaw 3 position) to half the error.

Repeat process at jaws 2 and 4. Repeat process until job is centred.

With an analogue DTI this is much harder, and requires some metal mathematics - which is harder the later it is in the day!

Thread: Non Inflamable Coal
14/12/2019 14:37:33

The Editorial for the latest issue of ME reminds me of a time - long ago - or it seems to be, when I, as t the Senior Controller of the Power System in Western Ausralia) was asking the Unit Controller on a Muja generator why his machine was erratic in it's output (in MW). His reply, was that, as the fuel (coal) was coming from a stockpile that had been not too well stored, and as such, had no callorific content. ie. the fuel going into the boiler was indeed non combustible! Lots of sand, but no callories. Things have improved over the years, but the episode does give me a smile.

Thread: ME & MEW Search Engine AWOL
04/12/2019 13:23:56

The search engine I have used in the past at this address:

http://www.itech.net.au/modelengineer/

gives a "File not found (404 error).

Is it really missing, or am I miising something!

Thanks in advance.

Thread: Seig X2 dust guard covers
03/12/2019 11:01:47

Yes, I did look at the supplier (Hare and Forbes in my case). Sorry, discontinued line! Don't ring us, we ........

03/12/2019 08:32:32

Eureka you found it!

I never would have though of "concertina bellows" for a search!

Thanks. I have ordered two!

Alan.

03/12/2019 06:55:41

I have a Seig X2 milling machine. The dust guard covers are cracked and separating and no longer protecting the ways and screws below from swarf. I have searched for a source for new ones, but cannot find any for sale. I have a suspicion I am not using the right key words, but how do you know!

Would anyone know of a supplier, or a way of manufacturing replacements?

Thanks in advance,

Alan.

Thread: Annealing Brass
02/12/2019 07:55:51

I anneal the necks of cartridge brass (30-06, 303 and others) by holding the neck area of the case over a low temperature spirit lamp (methylated spirits). I hold the case (in my hand - at the base) over the flame until the case becomes too hot to hold, then drop it into a box with a bit of rag in it so that it can cool naturally. It works.

Thread: Cold Blue
21/11/2019 02:24:40

COLD PRESSED VIRGIN FLAXSEED OIL (linseed oil) is written on the bottle. The 250mL bottle I have was purchased in the supermarket. It was made by made in Australia by Biogenic Health Foods, and is "rich in Omega 3," but I don't know if it is "raw" or "boiled."

20/11/2019 13:44:16

Virgin Flaxseed Oil (Linseed Oil) gives a nice durable finish to workshop tools. Clean the tools, rub it on, and bake in a domestic oven. No bad smells either!

Thread: Shell Petrol Can Puzzle
22/09/2019 01:13:17

Vickers Machinegun used a can much like yours. I have a WWII example, but not quite the same - no vertical tube.

Thread: Matt Reid - Dalton Lathe
13/09/2019 12:04:18

I have a "Lot 3" Dalton. I paid more than £1 for mine! Maybe £1000! See Tonyy Griffith's site for more information.

Thread: Home Made "Inserts" -Feelin' Groovy.
12/09/2019 01:45:32

I can obtain - for free - used bandsaw metal cutting blades - fairly big about 25 to 30 mm wide, quite thick, and about 6 TPI. Sometimes they are not worn out, but have broken (snapped). Has anyone tried these as a parting off tool? Power hacksaw blades are a bit scarce and expensive where I am. Any advice would be welcome.

Thanks,

Alan.

Thread: Boxford Shaper Table Lock
27/08/2019 14:06:48

I have a Boxford 8 inch shaper. It has the table that can be rotated, so it is a bit unusual.

I would like to cut a vertical surface on the shaper and to do so I would have expected to find a lock on the table such that it could not move horizontally, but I can't find it!

There certainly is a table lock to stop vertical movements of the table.

Has anyone found a solution to this problem, or is it not a problem at all? Is the mass of the table sufficient to not have to worry about it moving, or do I need to make up some "table stops' that fit the horizontal dovetail slide on the machine - one for each side of the table?

Thanks in advance.

Regards,

Alan.

Thread: Best way to cut HSS tool blanks from bar?
16/07/2019 14:18:12

I have cut 12mm wide strips of HSS from an old guillotine blade (about 75mm wide and 12mm thick) with a 1mm disc on a 125mm angle grinder - freehand. Slow , but I was careful not to let it get too hot (blue only) as I didn't really know the quality of the steel was. It turned out to be a good lathe tool.

Thread: Gibraltar Toolpost
16/07/2019 14:00:42

Construction of a Hemmingway kit was published in Model Engineer No. 3618, Volume 145, in 1979.

Thread: Snail Problems
30/06/2019 20:46:21

Get a duck! Duck's love snails, but there are secondary problems from ducks after they have injested snails, or anything else for that matter, and one must watch where they walk!

Thread: Antikythera mechanism
03/06/2019 18:42:38

I had the chance to see the Antikythera Mechanism today at the National Archaeological Museum in Athens. Truly amazing, especially considering the size, and it was not in one piece - in such a large wreck - and had been under water for 2,000 years!

Also amazing is the genius of those who worked out what it was, and made replicas!

By some chance has there been a construction article in Model Engineer?

Alan.

Thread: Casino Bonus Email Spam
08/04/2019 12:04:19

You can set up a rule to block emails that contain certain words - such as "casino bonus" etc. or whatever you like.

Thread: edm machines
07/04/2019 00:29:42

Construction of an EDM was a four part series in MEW. Issues 168 to 172. I have only read it in passing, and never constructed one.... yet! Just have to finish a couple of other projects first!

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