Del Rawlins wrote:
In Bart D. Hull wrote:
Ed,
Your sure you want OA? Why not MIG or TIG for welding?
I have access to all three and prefer to use MIG on steel (as its fast
and you don't go through the gas bottles like OA) and TIG
for every thing else. I use OA to remove bearings (ones
I don't want to re-use) and other heating purposes like softening up
loctited bolts.
A novice welder is far better off putting together his airplane using OA
rather than TIG or MIG. A google search will reveal that this has been
hashed out here many times in the past. Pay particular attention to
posts made by a guy called Highflier. I'm using TIG on my project, but
I am not a novice welder. No way would I use MIG for something I wanted
to fly in some day.
----------------------------------------------------
Del Rawlins-
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Unofficial Bearhawk FAQ website:
http://www.rawlinsbrothers.org/bhfaq/
Del, they say one way to judge another person's intelligence
is by how well he agrees with you.
I think you are bloody brilliant.
(and by the way, thanks for teaching me some of what I think I know)
I know I'm not an expert at it, and never will be,
but I feel like I'm catching on enough to be dangerous.
I built my whole shop with a Hobart 135 running cored wire.
I like it!
With the shielding gas, it gets even better since you can clearly
see what's going down.
But all my aircraft welding is done with O/A.
I've tried the Mig on thin tube.
Invariably my welds started off cold and wound up hot enough to cut
holes.
If I worked slowly enough to avoid burning the tube, the welds weren't
sound.
Grandpa said there is a proper tool for every job,
and it's not always a hammer.
For O/A welding, I've started wearing reading glasses under my goggles
so
I can really see what's going on. Boy, did that make a difference.
I suspect a magnifier in the goggles would be better since I can't see
squat for distance with the glasses on...
I haven't tried a Cobalt Blue filter yet because of the cost, but I've
been reading about it. Supposedly this will reduce the glow of the hot
metal to the point where all you really see is the molten puddle.
I'd like to try one before shelling out that much money.
Has anyone tried one?
Opinions?
Richard