Sebastian, Alex, Eric, Jon,
(did I forget anyone who responded, then I'm sorry)
Thanks for all the tips.
As Sebastian suggested I will definitely do a system analysis before
spending money but spending 200 USD on a 10,000 EUR machine is not that
high an investment. I will not opt for the 7i43 on the parallel port, I
was looking at th 5i20 just to get rid of the parport which is not on
all my mother boards. The question then is if PCI is the proper choice
(will there also be a PCI express version of the card?).
I will also re-read the manual, but I thought the section quoted by Eric
was only true for exact path or stop mode. The use of G64 Pxxx should
prevent a full de-accelerate / accelerate cycle between two vectors -
but I do vaguely remember that I also read [on this list] that EMC only
looks ahead one vector at a time.
So testing on a sim configuration seems a good thing to do and with
motherboards / memory sizes and PC configurations this is something that
I can do with the 10,000 G1 segments that Jon used.
The machine will be used for prototyping / small series production.
Speed is kind of important, amongst others I am milling large wooden
molds that are used to create two carbon fiber parts. One mold has a
calculated milling time (retrieved from both my G-code generator and the
file -> properties from Axis) of 3-5 days but with current performance
of my setup this seems to be more in the range of 2-4 weeks of real
milling time (estimated from running a small section of the program that
should take 1 hour).
This is for an insane hobby project but the machine also has to be put
to commercial use.
Thanks for all the hints, these will keep me busy for another few weeks
or so before making final decisions.
Regards,
Rob
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