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Member postings for Russell Eberhardt

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

Thread: Pictures in posts and font sizes.
19/03/2021 10:35:21

"Nonetheless, provided you know what you're doing, command line methods often faster to invoke and more efficient in operation."

Agreed Dave. When I first started using Linux (in the mid 1990s with Red Hat Linux) I spent many happy hours with the manuals and still occasionally refer to Blum's 800 page "Linux Command Line and Shell Scripting Bible".


19/03/2021 09:31:10
Posted by SillyOldDuffer on 18/03/2021 16:34:23:

The easiest way on Linux to convert images to different formats is with the imagemajick package. On ubuntu,

  • open a terminal with ctrl-alt-t
  • Type:
    • sudo apt update
    • sudo apt upgrade
    • sudo apt install imagemagick


convert filename.bmp filename.jpg

does what's expected - convert

Not sure that's the easiest way for beginners! Yes Imagemagick is a very versatile bit of software but is command line only. Perhaps an easier way would be to install Converscreen which acts as a graphical front end ti Imagemagick and will convert and resize almost any image format. Even works on Windows as well!


18/03/2021 15:36:02
Posted by Phil Meaken on 18/03/2021 10:33:09:

"My pics are usually from text with .odt from LibreOffice but I can convert them to .docx or .bmp easily.
Or .bmp from a scanner."

Install Xviewer which can be used to view a number of formats and you can save from it in .jpg format.


Thread: Gasket jointing compound
18/03/2021 11:06:47

If the surfaces are good don't use any gunge at all. If it's really necessary try Hylomar Blue which was developed by Rolls Royce.


Thread: Windows for the scrap bin?
18/03/2021 10:58:34

I agree that Windows updates are a pain. Linux updates in the background while you are using it, in most cases no need to reboot.

I have both Windows and Linux on both my laptop and desktop machines and rarely use Windows - just for Fusion 360. I find Linux is faster, more secure, and more reliable. Give it a go.

Russell (using Linux Mint Cinnamon)

Thread: Identifying brass?
15/03/2021 10:32:24

If it came from a sea going vessel it would not be brass or Admiralty brass. Neither is suitable for continuous immersion in sea water due to the high proportion of zinc. Zinc is used for sacrificial anodes to prevent corrosion of other metals in sea water. You should see what they look like after a couple of years at sea§*!


Thread: countersink advice
15/03/2021 10:14:34

It's best to modify twist drills to give zero rake to the cutting edge for working on brass, even for small sizes. It gives a much better finish. The modification process is very simple, see here:

Clickspring video


Thread: Antikythera solved ?
13/03/2021 08:43:00

Those animations are brilliant. I can't imagine how anyone managed to create something like that 2000 years ago.

Aliens? Time travelers? devil


Edited By Russell Eberhardt on 13/03/2021 08:43:31

Thread: Ball Races and 'Brinelling' (whatever that is).
08/03/2021 10:17:14

Well, I used miniature stainless steel ball races with all the lubricant washed out on the pallet arbor of my regulator clock and it has been running for about five years with no problems. The pallets only rotate by about 20° but of course the load is very low as is the speed. They have oscillated through about 80 million cycles though.


Thread: Junior hacksaw blades
08/03/2021 09:40:49
Posted by AJW on 08/03/2021 08:57:25:

Just fitted a new (eclipse) blade the 'wrong' way round and in use I'm inclined to think less force was used on the pulling/stroke cut?

The main advantage of fitting the blade so that it cuts on the pull stroke is that, if it sticks the couple tends to lift the blade rather than causing it to dig in.


Thread: ME beam engine
04/03/2021 09:54:09

+1 for reeves. I bought the casting set for the beam engine "Mary" many years ago and found the castings to be good quality.


Thread: Antikythera Mechanism : New-ish findings
03/03/2021 16:28:52

Some time ago I found a Solidworks 3D model of the Antikythera and managed to translate it so that anyone who uses Onshape (free) can access it here:

Antikythera model

Hope that works.


Thread: Skynet is Coming
20/02/2021 10:30:51

"Hey Google, turn the tumble drier on at 2am" or whenever your cheap rate starts?


Thread: Ultra sonic cleaning
12/02/2021 08:58:58

I have found that dishwasher rinse aid is preferable to washing up liquid as it is a non foaming detergent. However my main machine is almost permanently fille with clock cleaning liquid to this recipe:

Clock cleaning solution

Brass parts in particular come out bright and shiny.


Thread: Engineering / Modelling Books for Winter Evenings?
10/02/2021 09:25:11

Lanchester Motor Cars, Anthony Bird and Francis Hutton-Stott

Thread: From UK or Germany delivery
06/02/2021 15:50:39

Yes, so much for "free trade" after Brexit. We have similar problems buying from UK suppliers for delivery here in France. Carriers are demanding exhorbitant fees for customs and VAT before they will deliver goods that I order.


Thread: Hey you! What lathe? Why?
06/02/2021 15:44:12

I bought my first lathe in the 1970s for £50; It was an Edgar 5in model from the 1920s. It came with a motor to replace the treadle and I used it for a few years for the restoration of a vintage car making things like shackle pins and skimming brake drums. Later I replaced it with a UK made clone of the Atlas 10F from about 1950. I initially used it for vintage car work and later for model making, clock making, and (for brownie points) for household repairs. It is like a slightly bigger brother to the Myford being of similar design.

For a while I had a far eastern 9x20 lathe as well but needed the room for a milling machine so one of the lathes had to go and I chose to keep the Atlas which is still in use.

If I was going to replace it I would go for a new Chinese lathe.


Thread: EU materials suppliers?
06/02/2021 14:48:07

Another good French online supplier:


Hope that helps

Russell (in France)

Edited By Russell Eberhardt on 06/02/2021 14:48:57

Thread: Washers under nuts
29/01/2021 15:34:42

There are some circumstances ahere a washer should NOT be used. For example, if both the bolt and the surface it's fitted to are hardened an normal soft washer will reduce the reliability.


Thread: Cookies and similar ...
27/01/2021 10:16:38

They are all bigger than my first hard drive!


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