--- In
Homebrew_PCBs@yahoogroups.com, "Kevin Morgan" <prizes@...> wrote:
>
> Guys,
>
> I do think a DIY CNC kit for under $500 is certainly possible. I
> think I have under $300 in materials in my home built setup,
> including stepper motors and DIY controllers. It is similar to the
> ones that John Kleinbauer sells plans for.
>
> I haven't seen anything like that so far though.
>
> Kevin
To point out the costs, you can make a frame for under $50 and put in
rails of some sort or anther for, maybe $50 to $75. motors for $30 ?
a hobbyCNC driver kit for $80 and a power supply for maybe $100.00.
Figure in the neighborhood of $50 to $75 for all the shipping from
each of the suppliers. $5 here and $10 there adds up quickly.
Add wires and switches and all that and you are in the $450 range if
you can get the parts. if you have to spend more, the price goes up,
if you have a well stocked surplus bin, the price goes down.
We figure that with our time and such, we need to make some sort of
profit. I'd like to make about $10,000 on each machine, but alas, we
are not selling golden machines.
We figure it will take a few days to make a machine for us. a couple
weeks if you design and build your own.
So, we came up with a target price that was only a couple hundred more
than the cost of what you could scrape things together for.
I did offer a group buy for the SLA7078mpr chips on another list. it
looks like they would be about $6.80 per, and $4.05 for Priority mail
or $24.40 for three. I need to order 144 to meet the minimum order,
and once this is done, I would either sell them for $8 ea or just use
them for the new machines.
There is it. we are doing this in the basement and garage. we do
not have a shop or factory, so we do expect some things to change. We
also do not have a ton of start-up money, so we are doing it on the cheap.
I figure all of you have or are doing your stuff in a similar way at
some point.
Thanks for listening.
Dave