Re: [rp-ml] The OpenRP Initiative

From: Charles Overy <>
Date: Wed Jun 02 2004 - 15:05:20 EEST


I think this is as good a place as any to start. Thank you for your work.

I think though, that when you identify two main problems, large file size
and security, you leave a great deal unsaid. If I had a " top 10 problems
with stl"" list, security would not make it.

With your robust tool set would it not be possible to introduce a file
header that would include basic file information like..... what unit of
measure the program was drawn in? I have to stand up for my old
engineering professor who used to yell, "the answer is wrong without the
UNITS". If on translation back to stl, the OPEN RP toolset put the unit of
measure in a comment line, that would be really great.

Here is my list of things that might be included in an OPEN RP header.
Part bounding box (so a program can read it before it reads the entire mesh)
Program that created the mesh
UV coordinates (little out of my league here , but some method of defining
surface color or texture)
User notes
pointer to texture or color files
Standard format for nesting of multiple discrete shells or meshes within one

Your work is a good start.


----- Original Message -----
From: "Deelip Menezes" <>
To: <>
Sent: Tuesday, June 01, 2004 11:55 PM
Subject: [rp-ml] The OpenRP Initiative

> Dear List,
> There have been many discussions on this list about the STL file format.
> Those who took part in those discussions will find the following
> interesting.
> Today Floating Point Solutions launched OpenRP, a non-profit initiative
> which aims at offering the RP industry an alternative mode of data
> exchange while maintaining perfect compatibility with the industry
> standard STL file format. OpenRP offers the RP industry a new RP file
> format and free software to read and write RP files.
> OpenRP is not another monopolistic attempt to replace the STL file
> format. The industry standard file format is, and for the foreseeable
> future, will be the STL file format. OpenRP simply offers an alternative
> means of efficient and secure data exchange from one party to another.
> All this completely free of cost.
> Please visit to learn more about the initiative
> and download the free software. To get an overview of OpenRP you can
> read our press release at
> Yes, I know it is a sin to blow your trumpet on this list and I wont be
> surprised if I am crucified for that. But I couldn't think of a better
> place to post this information.
> I request you to take time and leave some feedback while you are at the
> OpenRP web site. Your suggestions/criticizm are most welcome and will go
> a long way in making OpenRP useful to the RP industry.
> Regards,
> Deelip Menezes
> Director
> Floating Point Solutions Private Limited
Received on Fri Jun 04 08:13:36 2004

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