Re: look used equipment

From: Jeevan Vijay Patwa mt me (jeevanp@iitk.ac.in)
Date: Tue Dec 11 2001 - 18:37:00 EET


Hi Ken ,
        Thanks for giving the immediate information,but it gives some more
doubts as
1. what is the minimum thickness it can build?

2. If i want to make a closed hollow cylinder of say 1 mm thickness(what
the minimum thickness i can have?)then is it possible with this technology
since mold material removal may pose a problem.

3. Can it not be used with other materials?

please clear my doubts

Jeevan

On Tue, 11 Dec 2001 ken@cammatic.com wrote:

> Jeevan,
>
> Thanks for taking a look. I hope the following information helps, for more
> details you can see our web site at www.cammatic.com. CAMmatic has a
> software product called RPworks that reads in an STL solid model, splits
> that solid into a series of surfaces and then creates toolpaths for each
> surface. For instance, if you wanted to make a ball, RPworks would read in
> the ball file, split it into a top half and a bottom half and then generate
> a toolpath for each half. To make the ball you would then put our frame on
> your CNC machine (it is just an open face mold as shown on the Products page
> of our web site) and pour our special low melting temperature metal into the
> box. The metal would solidify rapidly (with near zero shrinkage due to the
> special composition) and then you could run the first tool path. This would
> create a mold. Then pour in one of our construction materials (either
> polyurethane or aluminum filled urethane). These material harden rapidly and
> then run the second toolpath (carving out the top of the ball) and thereby
> create a ball. To remove the mold metal just place the entire part in a hot
> water bath and the metal melts and sinks to the bottom and can be reused. A
> more complicated part (like a hollow airfoil) can be made by repeating the
> steps (this is calculated automatically by the RPworks software).
>
> Now, to answer your questions specifically;
>
> > 1. Do i need some upgrading of CNC machine to use it as an RP machine
>
> You shouldn't, all you need is our RPworks software, the deposition stage
> and the raw materials. Your machine probably already reads standard
> Gcode.Our Gcode output is VERY basic with no circular interpolation (only G0
> and G1 commands) so that it will run almost any machine. Your machine should
> read it just fine but we can also write a customized post if we need to.
>
> > 2. Does the technology builds the part using deposition like RP?
>
> Similar, as described above we deposit material by hand and then remove
> material with the CNC. The biggest difference is that we work in entire 3D
> surfaces instead of thin layers, so a part has only a few depositions
> instead of a great many.
>
> > 3. Does the technolgy combines the functionalities of both RP machine and
> > CNC machine,i.e. can i use it to machine the part provided i have the
> > G-code?
>
> Right, our entire focus has been on making CNC compete with RP. CAMmatic
> gives you the ability to perform RP on a standard milling machine without
> requiring you to buy expensive dedicated equipment.
>
> > 4. Does the RPworks s/w work as Delcam PowerMill software which gives
> > Gcode when .stl file is inputted?
>
> I don't know exactly how PowerMill works so I can't give you an exact
> answer, the output format may be the same but the biggest difference is that
> RPworks gives you the ability to do RP, with overhangs and hollows and etc.
> Also, RPworks automates the decision making so that you don't even have to
> conceptualize the geometry you are making.
>
>
> ----- Original Message -----
> From: "Jeevan Patwa" <jeevanp@iitk.ac.in>
> To: <ken@cammatic.com>
> Sent: Monday, December 03, 2001 7:21 PM
> Subject: Re: look used equipment
>
>
> > Hi ken ,
> > I saw your web site and peruse through the material.I want to get
> > clear some doubts.
> > 1. Do i need some upgrading of CNC machine to use it as an RP machine
> >
> > 2. Does the technology builds the part using deposition like RP?
> >
> > 3. Does the technolgy combines the functionalities of both RP machine and
> > CNC machine,i.e. can i use it to machine the part provided i have the
> > G-code?
> >
> > 4. Does the RPworks s/w work as Delcam PowerMill software which gives
> > Gcode when .stl file is inputted?
> >
> > I would be happy if you can clear my doubts.
> >
> > Jeevan
> >
> >
> > > Mark,
> > >
> > > I saw your note about looking for an RP machine. If you have an
> existing CNC milling machine CAMmatic can give you RP capability without
> requiring you to buy expensive RP equipment. If you do not already have a
> milling machine then consider the costs and reliability of RP equipment
> versus using our technology and buying a milling machine. Please see our web
> site for a description of the RPworks software and CAMmatic's unique
> approach to RP.
> > >
> > > Thank you.
> > >
> > > Ken Richardson
> > > CAMmatic, Inc.
> > > ----- Original Message -----
> > > From: Mark
> > > To: rp-ml@rapid.lpt.fi
> > > Sent: Tuesday, November 05, 1996 2:45 PM
> > > Subject: look used equipment
> > >
> > >
> > > I am looking for a used RP Machine.
> > >
> > >
> > > I would prefer a Stratasys table top or Z Corp machine. Please let me
> know
> > > what you have and what price you are asking for it.
> > >
> > >
> > > Regards
> > >
> > >
> > > Mark Babel
> > >
> > >
> >
>
>
>

For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/



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