On 1 Oct 2016 03:36:28 GMT, "DoN. Nichols"
wrote:

On 2016-10-01, Larry Jaques wrote:
On Fri, 30 Sep 2016 17:11:58 -0700, Gunner Asch
wrote:

[ ... ]

Thanks for the review!

Yes, interesting review.


That 5 second post cool is very important on
a air cooled torch. Remember you are not just cooling the torch, but
the hose/electrode as well. And it can get prettttty warm at the
higher ranges..so you have to pump some gas at it to try to get it
cool.

Newb here. Aren't the delay, and the resultant flow of gas while the
weld cools, necessary to keep the weld from getting brittle? Even my
little $200 Harbor Freight TIG has that post-arc time delay before the
gas shuts off. Wish it had DC and high-freq start. sigh

Actually -- if your Harbor Freight TIG is like mine it *does*
have DC. What it does not have is polarity reversal and pulsing to
allow it to work well with aluminum.

Yup.

--
Good ideas alter the power balance in relationships, that is why
good ideas are always initially resisted. Good ideas come with a
heavy burden. Which is why so few people have them. So few people
can handle it.
-- Hugh Macleod