Re: [mach1mach2cnc] Re: Custom open source MACH3 and Linux CNC pendant controller
- On 27/02/2013 00:34, ptegler wrote:
> I'll add a side note.... perhaps it was my fat fingers....If there was not a home button on the program run screen it would not
> I use the pendant to sometime 'run the mill manually'
> While holding one of the arrows, apparently I roiled my finger over just
> enough while looking at the mill to hit the home button.
> Yep...you guessed it...right in the middle of the operations the mill
> started a home function. It grabbed the work piece hard enough to move my
> mill head (not a square column mill) and have it jump almost 1" sideways
> away from the work piece, over loaded the mot enough to have the breaker
> kick out, stopping it before I could even react and hit the panic stop . It
> took nearly 15 minutes to get the head locks loosened enough to re-tram the
> head. I'm still amazed the cobalt bit did not break
> I've now opened up the pendant and removed the home button
It was always a odd thing to have on the default screen. OK of course
for those that don't reference to switches, but for those that do it's a
- I'm going to kick in here and agree with Terry as I don't want to see
you take a bath.
You mentioned $8000 for dies (those are cheap dies). Add in machine
time, operator time (they don't run themselves), some scrap rate,
materials (plastic is cheap but not free), electricity (20+KW for a
If you do 1000 pieces I see more than $10-12 per case and that is
Unless you have an injection machine in the garage with a live-in
operator, I don't see the numbers working..
On 3/27/2013 1:40 PM, Terry Parker wrote:
> HIYA Bertho I agree on billet case higher cost that is why I mentioned
> a stock production case(cheap). But job shop pricing should be lower
> per unit than rolling your own counting YOUR time, material and
> overhead as cost. They should be able to outrun you by about at least
> 10 to 1 on production.
> The actual COST of molding your own is relative to HOW many you can
> actually sell. If the market goes south and you only sell 50 more out
> of a lot number molded of 1000 then then the relative COST of the
> molded case goes WAY UP. The actual cost is based on how many you have
> to BUY per lot verses how many you actually USE out of the total
> number molded.
> He never revealed how many cases he got for the initial $8K for startup.
> NOW that is just an opinion(;-) from observing DIY CNC.
> (;-) TP
> --- In firstname.lastname@example.org
> <mailto:mach1mach2cnc%40yahoogroups.com>, "Boman33" <boman33@...> wrote:
> > Terry,
> > Yes, it is a risk and a significant one. Agree.
> > The question boils down to the cost of the machined case vs. molded plus
> > tooling.
> > I have not seen any details but how much do you think a reasonable
> > of the cost for machined pendant cases is?
> > Cost/unit is very low when molded.
> > Bertho
> > From: Terry Parker Sent: Wednesday, March 27, 2013 14:11
> > Jerome your numbers do not add up. You will have to sell a LOT of
> > just to break even on the cost of injection molding. Cost of dies
> AND a run
> > of cases.
> > Production cases make sense as you are primarily selling the
> ELectronics and
> > function not being a Manf of a fancy case.
> > As to the DIY CNC group they are a fickle group and change
> directions like
> > the wind.
> > The next great hand pendant could come out tomorrow and leave you
> hanging. I
> > have seen it happen time and time again in the last 10 years.
> > Just a thought, (;-) TP
> > [Non-text portions of this message have been removed]
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