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DPRG: Contest Issues

Subject: DPRG: Contest Issues
From: James, Bill w-james2 at ti.com
Date: Mon Aug 16 09:29:06 CDT 1999

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Particle board is much more dense as plywood, it is nice and flat.

But there are two problems with it. One you have mentioned, it is heavy. The
other one is that if it gets wet it swells and is no longer flat or strong. 

That cardboard/wood material that Clay is using for his claw looks
interesting. Don't know how much it costs or if it comes in 4x8 sheets. 

Bill



- -----Original Message-----
>From: Dan Miner [mailto:miner at centtech.com]
Sent: Monday, August 16, 1999 9:17 AM
To: 'dprglist at dprg.org'
Subject: RE: DPRG: Contest Issues


My firefighting maze uses 1/2" (actually 15/32") particle board
I think it's called (maybe called pressboard?).  It's the stuff 
where the wood is ground up to little needle-like pieces and 
glued back together.  (It's not chip board where the pieces are 
more like coin sized.)  I think that particle board is heavier 
than plywood for the same thickness.  (But I'm not sure.)

I choose this over plywood because particle board (or pressboard)
is less likely to warp.  I've had it > 6 months and it's sitll
very flat.  Also particle board's surface is VERY consistant.

However, it takes 2 people to safely move one of the full 4x8 ft
sheets.  Half of a sheet could be done by 1 person I think.
Or go thinner than 1/2".

> -----Original Message-----
> From: Jason Plumb [mailto:z9d58 at ttacs.ttu.edu]
> Sent: Monday, August 16, 1999 8:44 AM
> To: dprglist at dprg.org
> Subject: Re: DPRG: Contest Issues
> 
> 
> At 01:13 PM 8/13/99 -0500, you wrote:
> >I think this is a great idea. You could paint both sides for 
> different 
> >patterns. You may be able to get away with thin pressed board panels
> >which are even cheaper.
> 
> I'd like to echo the thought of thin pressed board panels or 
> somethiing
> definately lighter/thiner than regular plywood.  We have a 
> fire fighting
> robot house at Texas Tech that uses plywood for the floors.  
> Although the
> material worked well, the floors are quite heavy and are, 
> frankly, a pain
> in the a** to lug around from site to site.  After dragging 
> those things
> around for the better part of a year, I'd HIGHLY recommend a 
> light wood
> material for the floor.
> 
> The house they used at the IEEE conference had nice 
> floors...but I don't
> know exactly what the wood was.
> 
> -jason
> 

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<P><FONT SIZE=3D2>Particle board is much more dense as plywood, it is =
nice and flat.</FONT>
</P>

<P><FONT SIZE=3D2>But there are two problems with it. One you have =
mentioned, it is heavy. The other one is that if it gets wet it swells =
and is no longer flat or strong. </FONT></P>

<P><FONT SIZE=3D2>That cardboard/wood material that Clay is using for =
his claw looks interesting. Don't know how much it costs or if it comes =
in 4x8 sheets. </FONT></P>

<P><FONT SIZE=3D2>Bill</FONT>
</P>
<BR>
<BR>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Dan Miner [<A =
HREF=3D"mailto:miner at centtech.com">mailto:miner at centtech.com</A>]</FONT>=

<BR><FONT SIZE=3D2>Sent: Monday, August 16, 1999 9:17 AM</FONT>
<BR><FONT SIZE=3D2>To: 'dprglist at dprg.org'</FONT>
<BR><FONT SIZE=3D2>Subject: RE: DPRG: Contest Issues</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>My firefighting maze uses 1/2&quot; (actually =
15/32&quot;) particle board</FONT>
<BR><FONT SIZE=3D2>I think it's called (maybe called =
pressboard?).&nbsp; It's the stuff </FONT>
<BR><FONT SIZE=3D2>where the wood is ground up to little needle-like =
pieces and </FONT>
<BR><FONT SIZE=3D2>glued back together.&nbsp; (It's not chip board =
where the pieces are </FONT>
<BR><FONT SIZE=3D2>more like coin sized.)&nbsp; I think that particle =
board is heavier </FONT>
<BR><FONT SIZE=3D2>than plywood for the same thickness.&nbsp; (But I'm =
not sure.)</FONT>
</P>

<P><FONT SIZE=3D2>I choose this over plywood because particle board (or =
pressboard)</FONT>
<BR><FONT SIZE=3D2>is less likely to warp.&nbsp; I've had it &gt; 6 =
months and it's sitll</FONT>
<BR><FONT SIZE=3D2>very flat.&nbsp; Also particle board's surface is =
VERY consistant.</FONT>
</P>

<P><FONT SIZE=3D2>However, it takes 2 people to safely move one of the =
full 4x8 ft</FONT>
<BR><FONT SIZE=3D2>sheets.&nbsp; Half of a sheet could be done by 1 =
person I think.</FONT>
<BR><FONT SIZE=3D2>Or go thinner than 1/2&quot;.</FONT>
</P>

<P><FONT SIZE=3D2>&gt; -----Original Message-----</FONT>
<BR><FONT SIZE=3D2>&gt; From: Jason Plumb [<A =
HREF=3D"mailto:z9d58 at ttacs.ttu.edu">mailto:z9d58 at ttacs.ttu.edu</A>]</FON=
T>
<BR><FONT SIZE=3D2>&gt; Sent: Monday, August 16, 1999 8:44 AM</FONT>
<BR><FONT SIZE=3D2>&gt; To: dprglist at dprg.org</FONT>
<BR><FONT SIZE=3D2>&gt; Subject: Re: DPRG: Contest Issues</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; At 01:13 PM 8/13/99 -0500, you wrote:</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;I think this is a great idea. You could =
paint both sides for </FONT>
<BR><FONT SIZE=3D2>&gt; different </FONT>
<BR><FONT SIZE=3D2>&gt; &gt;patterns. You may be able to get away with =
thin pressed board panels</FONT>
<BR><FONT SIZE=3D2>&gt; &gt;which are even cheaper.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; I'd like to echo the thought of thin pressed =
board panels or </FONT>
<BR><FONT SIZE=3D2>&gt; somethiing</FONT>
<BR><FONT SIZE=3D2>&gt; definately lighter/thiner than regular =
plywood.&nbsp; We have a </FONT>
<BR><FONT SIZE=3D2>&gt; fire fighting</FONT>
<BR><FONT SIZE=3D2>&gt; robot house at Texas Tech that uses plywood for =
the floors.&nbsp; </FONT>
<BR><FONT SIZE=3D2>&gt; Although the</FONT>
<BR><FONT SIZE=3D2>&gt; material worked well, the floors are quite =
heavy and are, </FONT>
<BR><FONT SIZE=3D2>&gt; frankly, a pain</FONT>
<BR><FONT SIZE=3D2>&gt; in the a** to lug around from site to =
site.&nbsp; After dragging </FONT>
<BR><FONT SIZE=3D2>&gt; those things</FONT>
<BR><FONT SIZE=3D2>&gt; around for the better part of a year, I'd =
HIGHLY recommend a </FONT>
<BR><FONT SIZE=3D2>&gt; light wood</FONT>
<BR><FONT SIZE=3D2>&gt; material for the floor.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; The house they used at the IEEE conference had =
nice </FONT>
<BR><FONT SIZE=3D2>&gt; floors...but I don't</FONT>
<BR><FONT SIZE=3D2>&gt; know exactly what the wood was.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; -jason</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
</P>

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