Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Bob I am suprised that you are familiar with the metric threads - In fact I wrote close to 8x1 -
it is exactly 7,8 x 0.8 mm - a special Marklin thread - the reason is that the customers of
Marklin had to come back to Marklin for spares - this is an early type of customer loyalty.
There are (as far as I know) no comercial taps&dies available. I cut the threads on my lathe
using 11 mm hexagonal brass bar and a 60 degree cutting tool. About nickel plating - as more as
you polish the brass as more is the finished nickel sparkling - therefore better a bit off
rough finish gives a better antique look.
Some pictures of how it should look on the boiler.
Arnold (Happy new year by the way)

my old notes:
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