Homebrew PCBs

On Tue, 15 Mar 2005 12:04:44 -0500, uhmgawa <uhmgawa@...> wrote:

>
> Why not just use an inexpensive air compressor?  Even tank
> models can be had for ~$100 at places such as Walmart including
> pressure regulator.  You likely only need 3-5 PSI at maybe
> 1-2 CFM if that.
> A compressor is also useful as a source of air for reflow
> soldering and vacuum source (with a $10 venturi style pump)
> for desoldering, pick/place, etc..


A normal compressor intoduces oil in the airstream and can not be run  
closed-loop because of metal parts.
I have set up a small fridge compressure, small storage tank and a nice  
panel with regulator, gauges, and outlet at my workbench for the other  
stuff you mentioned.

ST

Resend, was dropped..

-------- Original Message --------
Subject: Re: [Homebrew_PCBs] Re: bubbler - more air for bigger bubbles
Date: Wed, 09 Mar 2005 16:58:34 -0500
From: uhmgawa <uhmgawa@...>
To: Homebrew_PCBs@yahoogroups.com
CC: uhmgawa@...
References: <d0nbcv+ra46@...> <422F65DD.9040802@...>

Adam Seychell wrote:

> This is where you need more
> air than conventional home fish tank air pump. I've looked around for
> such pumps and found some hydroponic stores sell large pumps, and then
> there are places that sell pumps for outdoor fish ponds and even home
> sewage treatment. There are high volume air pumps that are not too
> expensive. These cheaper high volume pumps are a bit louder and shorter
> life span, but that is unimportant for etching.

Why not just use an inexpensive air compressor?  Even tank
models can be had for ~$100 at places such as Walmart including
pressure regulator.  You likely only need 3-5 PSI at maybe
1-2 CFM if that.

A compressor is also useful as a source of air for reflow
soldering and vacuum source (with a $10 venturi style pump)
for desoldering, pick/place, etc..


-- 
uhmgawa@...        www.gnu.org


-- 
uhmgawa@...        www.gnu.org

Stefan Trethan wrote:

> A normal compressor intoduces oil in the airstream and can not be run  
> closed-loop because of metal parts.
> I have set up a small fridge compressure, small storage tank and a nice  
> panel with regulator, gauges, and outlet at my workbench for the other  
> stuff you mentioned.

Oil lubricated compressors can introduce oil but inexpensive
filters are exist for common applications such as spray
painting which can be used to remove airborne oil.  Alternatively
an oil-less compressor (teflon piston) are available and typically
cost less than oil lube versions.


-- 
uhmgawa@...        www.gnu.org