RE: [rp-ml] Question from a dinosaur

From: Andrew Graves (
Date: Fri May 06 2005 - 19:00:23 EEST

MessageThat's true - you could mix 0.003" layers with 0.006" layers etc.,
but then you really will have issues with blade gaps and would probably have
to set the gap parameters at some compromise value halfway between the
recommended values. It would probably be OK on a short part though.
  -----Original Message-----
  From: Warner, Pat []
  Sent: Friday, May 06, 2005 4:06 AM
  To: Andrew Graves;
  Subject: RE: [rp-ml] Question from a dinosaur

  Sorry to contradict you Andrew.

     Providing that the large layer thickness is a multiple of the smaller
one, multiple layer thicknesses can be achieved through a Z range.


  Pat Warner

  Digital Manufacturing Supervisor

  Renault F1 Team



  OX7 4EE


  From: [] On Behalf
Of Andrew Graves
  Sent: 06 May 2005 02:29
  Subject: RE: [rp-ml] Question from a dinosaur
  Yes Steve
  It can be done, but it depends which version of Lightyear you are running.
I believe it couldn't be done in older versions.
  You will probably have to utilize the "General" styles (with their wider
parameter allowances) to achieve what you want and beware the dreaded Blade
Gap parameters in the Recoat Parameters as they are related to the Layer
Thickness.  You will have to change those also.   It is advisable to stick
to multiples (e.g. 0.004" and 0.008"  or  0.003" and 0.006" etc.)  It's
still sometimes tricky though and care should be taken...don't experiment on
a vital build!!
  What your guys probably mean is that you can't apply 0.004" to one part
and 0.005" to a different part.  Remember, all parts on one given layer must
have the same Layer Thickness - so if you change LT at 2 inches into one
part, you should change at the same point on ALL the parts on the platform.
  Good luck - let us know how you get on
  Andrew Graves
  Total C S Team, Inc.
   -----Original Message-----
    Hi, all -
    I started running our first 250 in 1990, so I believe I qualify as a
dinosaur.  I have not had to actually run the machines myself for several
years (since Maestro).
    In the olden days, we used to use different ranges of layer thicknesses
within a part.  I'm 99% sure that we could run one build style in a given
range in Maestro, then change to a different build style as we proceeded up
the part.  So, if I wanted to build .006" layers on a real straight section,
then .003" layers on an area I wanted finer detail on, I could do that
(historical note - we used to use .010" layers and said that was "plenty
good," then went down to .005" if we REALLY wanted detail).
    My LightYear-trained guys say this cannot be done.  They say only one
build-style is allowed per platform (they agree you can do different recoat
styles, but not build styles).
    I'd appreciate your feedback - is this really true?  Obviously, I don't
have 3D maintenance, or I'd be calling them to ask them....
    Steve Stewart
    Steve Stewart
    protogenic, inc.
    1490 w. 121 ave., suite 101
    westminster, co 80234
    Protogenic - Your design, our commitment
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