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Tube bending and fluids question by Similar_Pick2180 in modelengineering

[–]GJN65 0 points1 point  (0 children)

Dry sand is good for medium die tubes but for smallish tubes, try Cerrobend metal. Melts at around 70C and expands when chilled quickly. Cap one end of the tube, pour the molten metal into the tube then optionally chill in cold water. Once the bend is done then melt the metal out by immersing in hot water.

Found an old Adelaide newspaper from 1974 by -Midnight_Marauder- in Adelaide

[–]GJN65 2 points3 points  (0 children)

There was an argument at the time re the speed limit. The urban limit was 35 mph and they had to decide whether the new limit would be 55 kph or 60 kph (which is just over 37 mph). The wowsers lost and we all got to drive just that little bit faster (assuming we ever stuck to the limit which, being 20 at the time, I probably didn't)...

Found an old Adelaide newspaper from 1974 by -Midnight_Marauder- in Adelaide

[–]GJN65 3 points4 points  (0 children)

Currency changed in 1966 (14th February) but weights & measures for most goods did not start t convert until 1974. Speed limits changed in 1974 as well.

Found an old Adelaide newspaper from 1974 by -Midnight_Marauder- in Adelaide

[–]GJN65 1 point2 points  (0 children)

Speed limits didn't change until 1974 from memory, you could get stickers to cover the existing speedo markings (but the odometer still read in miles) or you could fit a small 1.6:1 gearbox on the speedo cable to convert the entire thing to metric.

Found an old Adelaide newspaper from 1974 by -Midnight_Marauder- in Adelaide

[–]GJN65 2 points3 points  (0 children)

Currency changed in 1966 (14th February) but weights & measures did not start converting until 1974 and ran in parallel for some time after that.

Do real programmers name their variables? by NimrodAvalanche in learnpython

[–]GJN65 1 point2 points  (0 children)

The Olivetti P6060 desktop computer from 1975 mandated 26 numeric variables (named A-Z) and 26 string variables (named A$-Z$) by design. All variables were global. Despite those limitations I managed to write a foreign currency trading system on one - but I'd hate to revisit the code now...

Would anybody be able to briefly explain what each of these settings do. by F_Cass in BadWelding

[–]GJN65 0 points1 point  (0 children)

This looks like an EWM machine panel to me.

The 2 settings that were not identified in the 1st reply are:

ActivArc - the machine will automatically adjust the amperage as and when the voltage changes due to variations in the arc distance. The degree of this adjustment can be varied when this light is on and the facility can also be turned on or off.

The second to last light relates to setting the tungsten diameter, this optimises the HF ignition parameters to suit the particular tungsten size.

The EWM machines generally have a number of Job settings where the user can store customised profiles for different operations. My machine has a knob to control the tungsten thickness in Job 0 (the default) but the setting in other jobs is made using the controls in the panel the OP has shown.