[TheForge] air compressors, CFM, and psig

[Craig Schaefer]

You put it way better than I did, but you had to use a lot more words.


CraigS
Gresham, OR
----- Original Message ----- 
From: "Mike Spencer" <mspencer at tallships.ca>
To: <theforge at mailman.qth.net>
Sent: Thursday, May 07, 2009 11:51 AM
Subject: [TheForge] Re: air compressors, CFM, and psig


> 
> 
> Terry wrote:
> 
>> ...now that i have the opportunity to build a new shop and equip it
>> i have a sense of urgency that people outside looking in probably do
>> not understand.
> 
> In that case, I would go for a relatively modest-sized unit of
> reputable make from a dealer as close to me as possible -- do it now
> and get on with it.  But I would allocate "compressor room" space in
> the shop design to accommodate any one of:
> 
>     + one additional, similarly sized unit.
> 
>     + one additional larger unit
> 
>     + one very large unit that would replace the original
>      "modest-sized" one.
> 
> 
> That will allow you to quickly terminate the process of making
> difficult and unreliable projections of future needs, stop trying to
> make the perfect decision and avoid getting stuck in the tar baby of
> dithering over decisions the criteria for which cannot realistically
> be fully disambiguated.
> 
>> (so yes, perhaps to some people i do have money to burn. depends on
>> one perspective. )
> 
> In that case, should you suddenly discover one morning that you don't
> have enough compressor capacity for that day's (or week's) job, you
> can make a phone call, have a rented, large (or huge) portable diesel
> unit on-site before lunch and then start making plans to upgrade your
> own compressor setup, based on experience accumulated up to that
> point.
> 
> If you were stretching your new-shop budget to within a hair's breadth
> of disaster, making a less than optimal decision now might leave you
> on the financial rocks later.  But you have back-up funds.  So make
> what looks to be reasonably good decision now and get on with it.  No
> plan of any complexity can be perfect.  Some of your new-shop decisions
> will prove to be head-bangers later, even were you to spend months
> doing engineering studies, cost accounting, process analysis and the
> like.
> 
> 
> FWIW,
> - Mike
> 
> -- 
> Michael Spencer                  Nova Scotia, Canada       .~. 
>                                                           /V\ 
> mspencer at tallships.ca                                     /( )\
> http://home.tallships.ca/mspencer/                        ^^-^^
> 
> 
> 
> 
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