> -----Original Message-----
> From: John Dammeyer [mailto:jo...@autoartisans.com]
> Sent: Wednesday, February 20, 2019 12:07 AM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re: [Emc-users] DIY CNC builder dilemma, open request for
comments
>
> My mill is equivalent to a Grizzly G3606. From the now defunct House of
> Tools. They handle the broken parts and assemble and make sure everything
> is there before I ever saw it. No real complaints but it's not a HAAS.
Of
> course the price was nowhere near that either.
>
> I know for sure that I'm going to have to either rebuild (redesign) the X
> axis nut or just install ball screws (preferred). The PC, the CNC control
> software are such a small part of the whole thing.
>
> The BeagleBone design is published and can be used in other layouts.
> Nothing stops someone from producing a more S100 if you will (but smaller
> cards) system using it as a backbone processor. Although it's video
> processing is pretty pitiful. The Pi is not public.
>
> But again, 1000 hours (about 6 months work). $100 to $150 per hour. Say
> with all the design work including metalwork etc. that you can create that
> magic Linux CNC based box for $150,000. The customer base will probably
> only want to pay $500 at the most for it since you can duplicate what it
> does with used PCs and some hardware. The motors, couplers, power
supplies
> etc. remain constant regardless of the install. So if you want to make
> back your investment and earn a living then $150,000 R&D / $500 per unit
is
> 300 units.
>
> And even with $500 per unit the end user still has to modify his machine
> which is where all the work and money is. If the need was there it would
> already be filled. IMHO.
>
> John
Selling 300 units at $500 each would only recover the $150K R&D if the
supplied hardware were free with no advertising/support required for the
sales. I suspect that needing to sell 3000 units is closer to reality.
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