Re: [CAD_CAM_EDM_DRO] Re: Materials for machines. Was MDF for machines

Hi, Ballendo,

Yes, that is the name of the product I used to use. I think with a grid
supporting it, this would make a good surface for a router table. I am
pretty sure it is cheaper than many of the alternatives that have been
suggested, and it is not affected by moisture. Can any signmakers on the
list tell the list what they might be able to get half inch sheets for? I
don't need any myself, but I think highly of this alternative, and would
reccomend it.

Different people choose building materials for many different reasons. East
of the Mississippi River most people prefer to have a home with asphalt
shingles. They last from 15-20 years roughly. I have heard that in Europe,
they would not think of building a house with a roof that would only last
15-20 years. They would say we are crazy. Many homes in Europe are
hundreds of years old. I have heard that in Japan, many buildings are torn
down and replaced every 15-20 years. I don't really know if this is true or
not. It wouldn't surprise me at all to hear a person with a European
background wanting to use only Cast Iron for a machine, and a person from
Japan being happy to use aluminum or lightweight metal. I would not say
either of them are CRAZY for the choices they make. People's motives are
usually more complicated than we think, and often when we get to know a
person better, we are not as apt to think of their perspective on any
particular issue as so unreasonable that we would describe them as crazy.

Thanks,

Tom E.

---- Original Message -----
From: <ballendo@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, June 28, 2001 10:39 PM
Subject: [CAD_CAM_EDM_DRO] Re: Materials for machines. Was MDF for machines

> Hello,
>
> Sintra is one trademark name of an EXPANDED PVC foam that sign makers
> use...
>
> Hope this helps.
>
> Ballendo
>
> --- In CAD_CAM_EDM_DRO@y..., "Tom Eldredge" <harmonyt@r...> wrote:
> > Signmakers use white pvc sheets a lot, sold under different names.
> A half
> > inch sheet of pvc that signmakers use would be a very versatile and
> > available material for things like router tables. I have used this
> stuff for
> > signs I have made, but I forget the names it is sold under. Don't
> remember
> > much expasion problems with pvc. Signmakers?
> >
> > Tom E.
> >
> > ----- Original Message -----
> > From: Tom Murray <thomasm923@a...>
> > To: <CAD_CAM_EDM_DRO@y...>
> > Sent: Wednesday, June 27, 2001 9:38 PM
> > Subject: [CAD_CAM_EDM_DRO] Re: Materials for machines. Was MDF for
> machines
> >
> >
> > > --- In CAD_CAM_EDM_DRO@y..., ballendo@y... wrote:
> > > > P.P.S. Another possibility is a "chemical grade" sheet plastic.
> > > Don't
> > > > use plain polycarbonate(Lexan, Tuffek are two trade names), as
> the
> > > > hydrocarbons of the dielectric will weaken and "craze" it...
> > > Acrylic
> > > > might also work, and PVC sheet seems a (good)possible
> alternative.
> > > >
> > > > I suspect that the plastic alternative panels will not have
> > > > the "stiffness" of the trespa or phenolic, so consider this when
> > > you
> > > > are deciding.
> > >
> > > PVC is a pretty good choice in regards to chemical resistance,
> > > however a good plastic to consider is Delrin (also known as
> Acetal).
> > > From what I've seen it is pretty stiff and it is resistant to a
> lot
> > > of chemicals. Another plus - it is relatively inexpensive. I can
> > > check on it's resistance to dielectric fluid if someone can tell
> me
> > > what is in it.
> > >
> > > -Tom Murray
> > >
> > >
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> > > List Manager
> > >
> > >
> > >
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> > >
> > >
>
>
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