Re: CAD library (Some thoughts)


I'll try not to vent, but I'd rather not have the NMRA involved. Otherwise, you could expect everything in HO scale to end up S scaled, such as the NMRA coupler pocket spec (RP-22). I prefer the prototype to be my standard, rather than some arbitrary rules that impede progress.

While DCC should be standardized, the correct standards body should be the IEEE, and not the NMRA. The NMRA completely overstepped it's bounds assuming an electrical standard. Where would DCC be without the NMRA? Under the IEEE, my best guess would be that we'd already have "The Internet of Everything" with full IP addresses instead of a hodgepodge of 2 and 4 digit addressing, and numerous other advantages.

I would hate to see the crippling effect of NMRA standards and recommended practices on what could and should be a major leap forward for the model builder. If there is a standards body that should be involved, I would suggest the International Plastic Modelers Association. The technology has a lot more market share to the entirety of plastic model building, than just steam era freight car modelers.

Let's learn from our mistakes and keep the NMRA out of it.
Arved Grass
Fleming Island, Florida

From: "Rod Miller rod@... [STMFC]"
To: STMFC@...
Cc: pres@...
Sent: Friday, August 15, 2014 3:32 PM
Subject: Re: [STMFC] CAD library (Some thoughts)

I wonder if standards and RPs on this would be appropriate
for the NMRA to address. Consider where DCC might be if it
were not standardized.

NMRA haters please refrain from venting.

I asked Charlie Getz, NMRA President, if the NMRA would be
interested in this as a project. His response was yes but
it won't work if no one volunteers to help. So if there is
consensus that this warrants consideration, are any of you
interested in volunteering? If so, please let Charlie know
at: pres at hq d o t nmra dot o r g



On 8/14/14, 8:37 PM, Richard Brennan brennan8@... [STMFC] wrote:
> At 06:38 AM 8/14/2014, 'Al and Patricia
> Westerfield' westerfieldalfred@... [S wrote:
>> Has anyone considered setting standards for
>> model railroad rapid prototyping?  Here are some thoughts on the subject.
> Way overdue! Ok - Some thoughts:
>>  Select a simple CAD program for use of everyone on the list.
> Noooooo!!!  We do NOT need to select the CAD
> program... only the exchangeable file type(s).
> Possible choice would be a "mesh" file format; like  .STL, .PLY, or .OBJ.
>> Establish a library of designs that can be
>> plugged into different prototypes – example:
>> reefer door hinges, rivets, scribing.
> e.g. As a start; all the stuff in the GrandtLine,
> PSC and similar parts catalogs.
> However... with unlimited variation
> possible,  the constraints imposed by 'close but not quite' parts go away.
> How about metadata?  Maybe in an XML format...
> with source information: measured in the field
> from car No. xxxxxx; scaled from photo; derived from plans; etc...
> In my dreams, GrandtLine would someday accept
> bulk orders as STEP-files for CNC-cutting molds for styrene parts on-demand...
> and PSC would offer 3D-to-Wax-to-Brass
> printing+investment casting services over the web.  <>
>> Set up a system of free and for-profit downloads.
> Free: Certainly!
> For-profit: I doubt it...
>    AFAIK there is no DRM (Digital Rights
> Management) capability on anything so intrinsically 'editable'
>    Additionally, if I modify the file to decrease
> the head size on one rivet... now is it MY design... or Yours?
>> Establish standards for quality and material with perhaps qualified vendors.
>> Establish standards for thicknesses of major parts so kitbashing is simpler.
> ..because our Hobby has such a good track record
> in setting relevant standards, updating, and enforcing them????
> This really a downstream production issue... You
> tend to get what you pay for, and technology
> progress keeps the value increasing.
>> Sell downloads for major parts such as roofs and ends.
> Well.. People do sell public domain stuff all the time;
> So I guess selling canned designs is possible,
> even if they are readily available elsewhere.
> The user value found in the design is
> small...  the value of a perfect part out the end of the process is large.
> Can we foresee the day of the local 'Starbucks 3D print Bureau'...
> "Would you like a Vente Latte while that Deco End prints?..."
>>  There are so many opportunities here I‘ve
>> only scratched the surface.  Anyone want to add some ideas? – Al Westerfield
> Al...
> I believe it's ALL YOUR fault ( least partially),
> For leading us onto that long, steep, slippery slope of:
> W-A-N-T  M-O-R-E  A-C-C-U-R-A-T-E  M-O-D-E-LS !!!
> Thanks!
> --------------------
> Richard Brennan - San Leandro CA
> --------------------
> ------------------------------------
> Posted by: Richard Brennan <brennan8@...
> ------------------------------------

Rod Miller
Custom 2-rail O Scale Models: Drives,  |  O Scale West / S West
Repairs, Steam Loco Building, More    |  2015 Meet is Feb 5 - 7               |




Yahoo Groups Links

<*> To visit your group on the web, go to:

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    (Yahoo! ID required)

<*> To change settings via email:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo Groups is subject to:

Join to automatically receive all group messages.