RE: [PSUBS-MAILIST] Touch start Tig

["Emile van Essen" <emile@airesearch.nl>]

Hi James,

A touch start will damage the point quickly. No good especially for fine
work.
I don't know your budget but the last years the nice machines with 160 Amp
and HF start became cheaper.

For instance:
 
http://cgi.ebay.com/50-AMP-PLASMA-CUTTER-200a-TIG-STICK-ARC-WELDER-190a_W0QQ
itemZ270445292520QQcmdZViewItemQQptZBI_Welders?hash=item3ef7cbabe8&_trksid=p
3286.c0.m14 


Regards, Emile

-----Oorspronkelijk bericht-----
Van: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] Namens James Frankland
Verzonden: donderdag 27 augustus 2009 10:57
Aan: personal_submersibles@psubs.org
Onderwerp: [PSUBS-MAILIST] Touch start Tig

Hi All.

Does anyone have any ideas on this....

I need to tig weld at home.  The tig machines i use at work are all high
frequency start, so no problems there.  But the machine i have at home does
not have the HF start option or gas solenoid.

It is a stick welder, lincoln V205s and does have a voltage drop "tig"
switch.  According to Lincoln, it will do "touch start" tig, which is
preferable to the ghastly scratch start business that you can bodge on to a
normal DC arc welder.  They tell me its fine, but they are bound to say
that.

Ive never used "touch start" before and i am suspicious of tungsten
contamination and it generally mucking up the arc.  Also i will have to have
a constant flow gas regulator, but thats not such a big deal.

Question:  Does anyone have any experience with this "touch start" business?
Is it ok or am i wasting my money?

If this is no good, i am tempted to get a HF converter like these.  (Scroll
down this page to about the middle.  Its the little yellow box the MTA tig
start 180i  HF)

http://www.migtigarc.co.uk/TIG_Welder/tig_welder.html

Does anyone have any experience with these sort of "add on" HF boxes?

Any suggestions?  I have 3 options.

1.  Touch start tig.
2.  HF convertor.
3.  Just buy a proper HF tig machine and starve for the next 6 months.


Many thanks as always,
James






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