[modeleng] Re: Propane vs butane

I too had an nasty experience with a long yellow flame coming from a DIY 
type blowtorch. It seems to do it if you tip the torch too far forward.

It appears that it's only a problem just after you've lit it. Once the 
nozzle area is hot enough the liquid vapourises and the mass flow rate is 
reduced.

I tip the torch in a clear direction to make sure it's "ok" (relatively)

JohnP 

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