Not as a direct source but for filling a high pressure source tank like a K
bottle or smaller.
Ken
On Sun, Oct 17, 2021 at 5:44 PM Wyatt Rehder <wyatt.rehder@xxxxxxxxx> wrote:
I probably wouldn't use a scuba compressor in this application since those
usually go to a bit too high of pressure and too low of flow rate for a
blow-off gun.
Most of the ones at home Depot and Lowes are oil-free...ish
On Sunday, October 17, 2021, roxanna Mason <rocketmaster.ken@xxxxxxxxx>
wrote:
Scuba tank air compressors are oil less and available on eBay for <$500.wrote:
Ken
On Sun, Oct 17, 2021 at 1:47 PM Wyatt Rehder <wyatt.rehder@xxxxxxxxx>
less. Then a few line filters with one line filter right at the gun, the
You can get a decent sized oil-less air compressor for a few hundred or
one Evan posted works. Or you can just use a normal line filter attached to
the gun as well. All-in you can make a pretty nice clean air setup for
under $400 if you buy middle of the road stuff new. That's about how much
I'll be into my setup.
parts like plumbing fittings is a ultrasonic cleaner. You fill the bath
I'm the subject of cleaning, something that is great for cleaning small
with water but float a glass Tupperware dish in the water. You fill the
dish with clean IPA. Have two dishes, one for clean IPA one for when the
IPA gets dirty. 10-15 minutes in the dirty dish first, then 10-15 in the
clean dish. Once the clean dish starts looking dirty it's now the new dirty
dish and the old dirty dish, dispose of the IPA and wipe it out then fill
with fresh IPA. It's now the new clean dish.
cheap ultrasonic cleaner. If it ever catches fire just sink the dish in the
The floating dish method in water makes it a lot safer to run IPA in a
water.
through the tube. I'll experiment with the approach.
-Wyatt
On Sunday, October 17, 2021, Rick Wills <willsrw@xxxxxxxxx> wrote:
Evan
Thank you for the suggestions. I like the process of drawing a wipe
not smell it any more. I used a needle valve and a N2 bottle to blow dry,
I ended up using IPA through the tube twice and blowing until I could
only used 300 psi of bottle pressure (1000 to 700).
$1000 but I could build up a functional system with an appropriate filter.
The clean filtered blow gun is an interesting idea. A bit pricy at
An air pump with filters in series could be done fairly easily.
Behalf Of Evan Daniel
Thanks again & Be Safe,
Rick Wills
Huber Heights, Ohio
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> On
less on the DI water, but either approach is fine. Washing three times withSent: Sunday, 17 October, 2021 11:17 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Equipment Cleaning Advice
That's the right basic idea. I tend to lean harder on the IPA and
soap and water seems excessive; I'd replace that step with something like
"clean as appropriate (technician discretion), visually inspect for no
significant dirt or oil or debris".
let it air dry. This will help remove any dissolved oils that may be in
After the final alcohol clean, I would blow off the alcohol, not just
your IPA, rather than letting them redeposit on the part.
If the hose should be relatively clean, and you're mostly worried about
For the hose, it will depend a bit on what you're trying to remove.
minor dust and handling contamination, I'd flush with IPA, blow dry, maybe
repeat that, then blow some wadded up Kim Wipes or similar through in both
directions until they come out looking clean. Then flush with IPA and
nitrogen twice to ensure the Kim Wipe debris is entirely gone, then blow
off with nitrogen until it doesn't smell.
oil-free compressor with an air dryer if you want. Your blowoff gun will
In all this, you can replace the nitrogen with clean dry air from an
ideally have a final filter on it, such as
https://www.mcmaster.com/blowguns/clean-air-blowguns-6/.
The hose I’m cleaning is a used to transfer liquid N2O from a large bottle
Evan Daniel
On Fri, Oct 8, 2021 at 9:26 AM <willsrw@xxxxxxxxx> wrote:
Hi
I am looking for a bit of advice on cleaning for a hose for N2O.
to a much smaller one.
core. Tube ID is 0.25 inch. End fittings female 37 degree flare, ¼ inch
The hose is 10 feet long, stainless steel braid wrapping over a PTFE
(I think it’s a -4).
other oxidizer equipment. Start with mechanical cleaning, three times with
With a smaller 12 inch tube I used the same process for cleaning
soap and hot water with tap water. Last wash, it was raised thoroughly.
Then, I place the part in an ultrasonic cleaner for 30 minutes at 80 deg C,
using Blue Gold Cleaner and deionized water. Afterwards, it goes into a
hot raise bath. Raise water is distilled water. Next is another distilled
water hot raise bath; then, a cold raise bath. Finally, the part is soaked
in a bath of 100% isopropyl alcohol. Part is removed an let dry. Dries
until I can no longer smell the alcohol. After second mechanical cleaning,
nitrite gloves used during all handling. Parts not directly assembled are
double bagged with date.
isopropyl alcohol in it and vigorously shake. Then drain and blow with
What should I do with a 10 foot hose? One thought is to put
bottled nitrogen until you can’t smell it anymore.
Any suggestions will be appreciated.
Thanks,
Rick Wills
Huber Heights, Ohio