Times have changed. 3D printing permits one off runs with little effort after 
the initial design.  

Sent from my iPad

> On Dec 23, 2018, at 8:00 AM, Edward R Cole <[email protected]> wrote:
> 
> Have to agree, in principle, with Don.
> 
> Many of you may never had done a small volume production.  I have.
> I cannot afford to purchase CNC tooling, metal brakes, etc. for a project of 
> twelve copies.  Vendors are all out of state with added shipping costs.
> 
> So I chose a good quality commercial chassis from Hammond and built an 
> aluminum jig to hold it in a vise for drilling.  Square holes required hand 
> filing.  Stick-on labeling.  I used a pcb made by a reputable small 
> production house (W6PQL).  Those that bought the 80w 2m amp got a pretty good 
> product but no confusion that it was hand made.  Costs were hard to get 
> competitive with commercial amp mfrs but I think the reliability might have 
> been better.
> 
> You would have to survey my customers who all read this list and most have 
> Elecraft radios that were used with the amp (majority had the KX3-2M).
> 
> I had an opportunity to buy out a popular line of transverters and recently a 
> popular preamp maker.  Cost/labor time were decisive against them (mostly at 
> my age).  Had a hard time convincing my self that working for under $10/hour 
> was a good deal.  Each amp took about 18 hours each  and my net was under 
> $100.  So I considered it learning experience and labor of "love".
> 
> In manufacturing there is a concept called "economy of scale" which Wayne and 
> Eric are probably very conversant.
> 
> 73, Ed - KL7UW
>  http://www.kl7uw.com
> Dubus-NA Business mail:
>  [email protected] 
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