[Boatanchors] Need software to change blueprint to blackline

[Dave Brown]

You can do this with most competent inage processing programs, eg Photoshop 
etc.
Freebies like Irfanview can do it as well. The command will typically be 
'Negative' or similar.
73
 Dave, ZL3FJ

----- Original Message ----- 
From: <WA5CAB at cs.com>
To: <boatanchors at qth.net>; <boatanchors at theporch.com>; 
<milsurplus at mailman.qth.net>; <mrca at mailman.qth.net>; 
<atlas_craftsman at yahoogroups.com>; <southbendlathe at yahoogroups.com>; 
<atlasshaperandmillingmachineusersgroup at yahoogroups.com>; 
<tmc at mailman.qth.net>
Sent: Sunday, January 20, 2013 1:06 PM
Subject: [Boatanchors] Need software to change blueprint to blackline


> Groups,
>
> I received a file from another member of several of these lists asking
> whether I could turn several blueprints in to regular black on white.  The 
> parts
> are specifically machinery parts to make but I also acquired recently a
> couple of radio manuals worth scanning with for some strange reason the
> schematics as blueprints.  Hence the wide distribution.
>
> Does anyone know of any software that can turn a scanned negative or
> blueprint into a positive (black lines on white)?  If so, please tell me 
> what it
> is.  I actually thought I had done some of this a few years ago but when I
> went to try to find what I did it with, the cupboard was bare.  It would 
> also
> be nice if the application costs less than AutoCad!
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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