Thanks for the education Jim,

Just wishful thinking on my part. The advertizing sure makes it sound 
simple.

Oh well, back to mass scratchbuilding I guess for some cars I want a lot of.

Carey

Carey Probst

Member, M.I.T. Educational Council

S Scale, Sn3 and S High Rail/AF

A well regulated militia being necessary to the security of a free State,

the right of the people to keep and bear arms shall not be infringed.


On 1/16/2012 12:08 PM, SMMW wrote:
>
> Carey,
>
> 3D printing is intended for prototyping and VERY limited production of 
> small parts, like electronics. As with any RP process, the limitations 
> are (1) price and (2) material selection. I’ve been producing kits 
> using RP’d patterns since 2002 when the resolution improved from .006” 
> layer thickness to .002”, which is the current thickness for most 
> higher-quality, rigid SLA materials. Yes, there are some “waxy” 
> processes that routinely produce .0005” layers but those are usually 
> small parts intended for lost wax casting.
>
> It’s interesting to read the current thread on the Steam Freight Car 
> List about RP and how these parts will “solve the problems” of 1-off 
> kits. The fact is, no RP process will do that because of layering, 
> cost and material make up. There is no “magic bullet”. I’ve worked 
> deep in the trenches of RP since 1995, just 7 years after the very 
> first RP machine was sold. I was a sales engineer for an RP house for 
> 4 years and know all too well how difficult it was to produce good 
> quality parts. There was a LOT of scrap, a HUGE amount of expense to 
> own/lease and operate the machines, and so on. The learning curve 
> required to produce the type of parts I use for my patterns is not a 
> curve at all … it’s straight up (seemingly)!
>
> Jim King
>
> Smoky Mountain Model Works, Inc.
>
> Ph. (828) 777-5619
>
> _<www.smokymountainmodelworks.com>_
>
> 



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