On Sun, 24 Feb 2008 20:47:11 -0600, with neither quill nor qualm,
"Martin H. Eastburn" quickly quoth:
Don't I wish I were that young to be called son.
What, you didn't hear my Foghorn Leghorn voice there?
What is the typical air pressure a IR121 gun is used with ?
Standard air: 90psi or better, one hopes.
I start it up against work, but it goes through the work and
continues to be moved to the side for more work. So it isn't
Always on work. And can't be.
My concern was if I was over pressuring it and thus the hammer
was throwing the chisel to hard and it beat up the spring.
While that's possible, the more frequent cause is that you cut off
what you're chiseling against and don't come off the trigger soon
enough. That can break springs and the end of the gun itself.
Regarding the heat - process wasn't completed - never annealed ?
If not crystalline like it might be soft metal.
Si, eez possible.
The new ones are stronger steel. The screw on was the same pitch, but
it took more force to thread it on as it also spread the spring.
That could be the spring mfgr's building specs being smaller, too.
The previous spare part was in a poly bag - likely bulk supply.
Now the new ones - same part number - come in poly/cardboard - MADE IN USA
with the plant name and state.
SAE parts for a metric body? g
I suspect these will last. I suspect the previous two (gun 1st) and optional
spare - were from China and not to spec.
Those are screwed on chisel retainers. I assume you mean by getting away
from me is pounding air with it.
Precisely. That'll kill a gun quickly. A leather-gloved hand on the
chisel can help mitigate that, too, but it's secondary.
You've learned to feather the trigger, oui? Trigger control is key to
mastering those monsters. I hope you're not one of those poor souls
who never come to realize that air is a variable speed tool. Triggers
can be finessed. You'd be amazed to see how many people think they're
toggle switches, either full on or full off. sigh
--
Such is the irresistible nature of truth that all it asks, and all it wants,
is the liberty of appearing. -- Thomas Paine