Digest 43, originally sent Thu Jan 27 01:51:55 2000
There are 8 messages in this issue.
Topics in today's digest:
1. Pressure Pot...again
From: nkitchen@netonecom.net
2. correction
From: nkitchen@netonecom.net
3. Re: Pressure Pot...again
From: "Roderick J. Geis" <Geis@rayzist.com>
4. Re: Pressure Pot...again
From: "Mark D. Hooper" <mhooper@nb.net>
5. Re: Pressure Pot...again
From: Rick Sabatino <r.sabatino@att.net>
6. Re: Pressure Pot...again
From: REgina Nickels <starcreations@att.net>
7. Re: Digest Number 42
From: EvieWarner@aol.com
8. Re: Digest Number 42
From: REgina Nickels <starcreations@att.net>
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Message: 1
Date: 26 Jan 2000 14:10:14 -0000
From: nkitchen@netonecom.net
Subject: Pressure Pot...again
Background info: A few weeks ago I posted a cry for help to get my new
pressure pot working. I have 120 grit Aluminum Oxide, #40 Central Pneumatic
pressure pot from Harbor Freight, and a 2 hp compressor. Using a nozzle one
click smaller than 1/8". I have 10 tempered glass panes to reverse etch.
Most replies suggested I get a larger compressor and use a smaller nozzle
than I had on.(3/32)Change abrasive from 220 to 100-120.
Problem: After fixing all the air leaks in the unions, changing to the
smaller nozzle, aquiring coarser grit I am still not getting what I would
call an etch. I did for a minute or two, but that quickly subsided. Have
found a 5hp compressor to rent (in northern rural Mich. compressors are
few and far between) Have not tried it yet. I want to post more questions
before I go the 50 miles to rent it. Once I get it I want to be sure my money
is well spent and it is the solution to give me success. I am working in a
heated booth I built in the garage. My glass is in a pass through booth I
built. The compressor is on the outside of the booth. ( I thought any dust
sucked into it would damage it) Inside of booth is warm, outside below
freezing. What do I do with this moisture trap on the pot? I think theres
some condensation of air. Also, have tinkered a hundred times to get my
adjustments right. Did get them right for a day. (air mix open, grit mix 3/4)
But the next day the same settings didn't produce. I had used a siphon blaster
for 3 years just fine. What do you think my problem is?
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Message: 2
Date: 26 Jan 2000 14:17:43 -0000
From: nkitchen@netonecom.net
Subject: correction
Am now using a 9/64" nozzle not 3/32". Its smaller than 1/8" Also, My
onlist/sandcarver home page shows archives for members only. I am a member, but
can't figure out how to access it?
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Message: 3
Date: Wed, 26 Jan 2000 11:52:40 -0800
From: "Roderick J. Geis" <Geis@rayzist.com>
Subject: Re: Pressure Pot...again
nkitchen,
In order to facilitate easier access to the digests I posted them on
our web site. Go to http://www.rayzist.com/Support/mailinglist.htm
With regard to etching on tempered glass read Digest 28-31. Also
visit http://www.ppgglass.com/architect/sand.htm as mentioned in
Digest 29.
-Roderick
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Message: 4
Date: Wed, 26 Jan 2000 18:35:01 -0500
From: "Mark D. Hooper" <mhooper@nb.net>
Subject: Re: Pressure Pot...again
>From: nkitchen@netonecom.net
>
>Background info: A few weeks ago I posted a cry for help to get my
>new pressure pot working. I have 120 grit Aluminum Oxide, #40
>Central Pneumatic pressure pot from Harbor Freight, and a 2 hp
>compressor. Using a nozzle one click smaller than 1/8". I have 10
>tempered glass panes to reverse etch.
>Most replies suggested I get a larger compressor and use a smaller
>nozzle than I had on.(3/32)Change abrasive from 220 to 100-120.
>Problem: After fixing all the air leaks in the unions, changing to
>the smaller nozzle, aquiring coarser grit I am still not getting
>what I would call an etch. I did for a minute or two, but that
>quickly subsided.
If you got the correct results for a few minutes you're getting
close! As your blasting, the abrasive coming from the nozzle should
be just barely visible. The adjustment for this "should" be under the
pot. Another problem may be the abrasive may not be getting into the
proper part of the pot...how much abrasive do you have in the pot?
> Have found a 5hp compressor to rent (in northern rural Mich.
>compressors are few and far between) Have not tried it yet. I want
>to post more questions before I go the 50 miles to rent it. Once I
>get it I want to be sure my money is well spent and it is the
>solution to give me success.
Your 2 hp compressor should work! However maybe not for long periods
of time...How large is the tank on the compressor? the specs. should
tell you how many gallons. At present I am forced to use a 1.5 hp
compressor...I am making it work...just not alot of fun doing it ;-)
> I am working in a heated booth I built in the garage. My glass is
>in a pass through booth I built. The compressor is on the outside
>of the booth. ( I thought any dust sucked into it would damage it)
>Inside of booth is warm, outside below freezing. What do I do with
>this moisture trap on the pot? I think theres some condensation of
>air.
There should be a drain on the bottom of the trap. Just open it very
slightly every now and then...the water will blow out.
>Also, have tinkered a hundred times to get my adjustments right.
>Did get them right for a day. (air mix open, grit mix 3/4) But the
>next day the same settings didn't produce. I had used a siphon
>blaster for 3 years just fine. What do you think my problem is?
What is the chance of moisture getting into the abrasive? If your
getting a "surge" as your blasting you do have moisture in the
abrasive...this is a bad thing!
You will need to empty the pot and dry the abrasive...I use my oven,
with the door open.
Gotta run now class in 30 minutes...looking for your reply later tonight
_____ O o
[_/-\_] o
(0)======
--ooO--------Ooo-- Mark
Think "Different" •
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Message: 5
Date: Wed, 26 Jan 2000 20:56:46 -0600
From: Rick Sabatino <r.sabatino@att.net>
Subject: Re: Pressure Pot...again
A few pints to look into.
1. 9/64 is larger than 1/8 by 1/64th. you need a smaller nozzle.
2. Don't get fooled by the horse power of your compressor. The
important measurement of a compressor is the CFM (cubic feet per minuet)
.
3 Most pressure pots require a minimum of 7CFM at 90psi (pounds per
square inch). If you are blasting for short blasts a smaller compressor
will work but will probably run full out trying to keep up. Even most 5
HP compressors will not put out 7CFM. 5.6 is the highest rating I've
seen in a 110 volt unit available through most retailers. If your pot
works for a few seconds, then your compressor kicks on, and your blast
seems to lose power, then your compressor is to small.
4. You can compensate with smaller nozzles but, most units except for
micro blasters and table top units use a hose that's 3/8" or 1/2" and
cannot accommodate a very small nozzle.
5. One other word of wisdom. You get what you pay for. Harbor Freight
often sells reconditioned or seconds. Check the small print. To plug our
host, Rayzist would be a better place to purchase your pot from. I've
done business with TIP in Ohio before also, they manufacture a quality
pot. When you deal with companies like this you also get their expertise
and tech support. All pot are not created equally.
I hope this helps.
Rick
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Message: 6
Date: Wed, 26 Jan 2000 20:32:19 -0700
From: REgina Nickels <starcreations@att.net>
Subject: Re: Pressure Pot...again
All pot are not created equally.
Rick,
if I was 20 years younger I would agree with you......LOL
REgina
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Message: 7
Date: Wed, 26 Jan 2000 22:24:05 EST
From: EvieWarner@aol.com
Subject: Re: Digest Number 42
<< If any of you are having any problems technical or otherwise with
the sandcarving list or our host service Onelist please let me know >>
Hello to you all
I have had only one problem with this list.... It seems every one has been so
busy that there has'nt been much talk lately.
I thank you all for all the great info that I as a beginner have gained. I
have wanted to know about photo reproduction and am waiting to see what
happens.
Can any one recommend what kind of software I should purchase to get a photo
reproduced? I have a Hp 1100 printer. Can I use a scanner to reproduce a
photo? Any classes online to help?
Thanks
Eviewarner
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Message: 8
Date: Wed, 26 Jan 2000 21:01:13 -0700
From: REgina Nickels <starcreations@att.net>
Subject: Re: Digest Number 42
Evie Warner,
WE got Adobe Illustrator and Adobe Photo Shop 5.5, the PhotoShop program
is not cheap, but it really works. I know some people have gotten on the
www.ebay.com and bid on some of the programs and have been very happy
with the product. We were in a hurry and went to the store with the
credit card to get ours. And you can check out the site, www.adobe.com
and it will give you al the information you would want about the
programs. And I think RayZist also sells the programs.
REgina Nickels
star creations
EvieWarner@aol.com wrote:
>
> From: EvieWarner@aol.com
>
> << If any of you are having any problems technical or otherwise with
> the sandcarving list or our host service Onelist please let me know >>
>
> Hello to you all
>
> I have had only one problem with this list.... It seems every one has been so
> busy that there has'nt been much talk lately.
> I thank you all for all the great info that I as a beginner have gained. I
> have wanted to know about photo reproduction and am waiting to see what
> happens.
> Can any one recommend what kind of software I should purchase to get a photo
> reproduced? I have a Hp 1100 printer. Can I use a scanner to reproduce a
> photo? Any classes online to help?
> Thanks
> Eviewarner
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