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NSW season 6 2009
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dyrodium
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Joined: 24 Aug 2004
Posts: 6476
Location: Sydney


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I'm not sure how important adding grit is, utherene wheels stick fine to smooth surfaces ?
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Post Thu Mar 19, 2009 1:23 pm 
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Russell



Joined: 16 Aug 2004
Posts: 90
Location: Sydney


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We must not be wheelist ........think of those who still have red wheels

Post Thu Mar 19, 2009 4:00 pm 
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dyrodium
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Joined: 24 Aug 2004
Posts: 6476
Location: Sydney


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Tehe, fair enough, my only concern is it doing what it did @ sidetracked and clogging everything with a black filth.
By the way, having an MDF floor would mean we really should ban flame throwers again, wouldn't it? Confused
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Post Thu Mar 19, 2009 4:51 pm 
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Spockie-Tech
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Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia


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Just a note regarding the anti slip options for the paint.

We tried two different anti slip paints on the Robowars arena.

The sand type gave good grip and lasted reasonably well - a few events knocked it back to about 50% of the original grit level, but the bots ate a lot of sand and ended up with grindy sounding gearboxes pretty quick. the typical pushing burnouts and so on the bots do rips the sand loose pretty quickly.

The second attempt used a pool surround anti-slip paint with some sort of rubbery particles suspended in it. This was a major PITA to paint. the rubbery stuff tended to go on in globs and needed some serious elbow grease with the roller to spread the particles evenly. No complaints from the roboteers about grit with this paint, and pretty good grip, but it seemed to wear flat pretty quick too.

The last event was painted over the anti slip which still seemed to leave a reasonably textured surface, but with no loose particles, since whatever was left was now being held down by an extra layer of paint. Smile

Given the amount of pushing, sliding, grinding, scraping and so on we do, its pretty tough to come up with an ideal solution.

Perhaps a thin layer of road tarmac would be good ? Wink Find some council roadies with a slab under your arm maybe ?
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Post Thu Mar 19, 2009 4:53 pm 
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DumHed
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Joined: 29 Jun 2004
Posts: 1219
Location: Sydney


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with the Jet Dry paint you're better off using it without undercoat. It soaks into the timber and makes a super strong surface.
It's about $65 for 4 litres.
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Post Thu Mar 19, 2009 8:38 pm 
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Valen
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Joined: 07 Jul 2004
Posts: 4436
Location: Sydney


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The paving paint is sounding good to me. Is it rated to have cars drive on it? if so the scrubbing our bots do should be fine.

I don't see any problem with flame throwers, the "bumpers" around the edge are already MDF.

As far as funding I suggest perhaps a one off contribution might do?
If we can split it 10 ways its ~$50.

Hopefully we can get some more cash in with the uni builders coming into things, I think they will probably be running in "single event" mode rather than as members at least initially.
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Post Thu Mar 19, 2009 9:26 pm 
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DumHed
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Joined: 29 Jun 2004
Posts: 1219
Location: Sydney


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yeah the paving paint is ok with cars driving on it - but it's normally used on concrete. It sticks much better to wood Smile

I'm using it to paint a boat at the moment!
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Post Thu Mar 19, 2009 10:03 pm 
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Russell



Joined: 16 Aug 2004
Posts: 90
Location: Sydney


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Latest is
Chris has the MDF in his work shop now
I have bought the paving paint a heavy duty commercial one oil based.
The plan
Chris and I will do all the cutting in his work shop and may be the first coat of paint on both sides of MDF then deliver it to arena when done.
Fitting will be very quick we believe just slip in and glue.
As for finish of paint can i suggest the following
second coat is put on with a long nap roller to see if this leaves a texture pattern on the paint. If not then I can do a spray coat that will leave a texture on the paint (I use to use this finish on some part that I use to manufacture)
This way we get some texture with out using any grit.
Look at the floor finish we have now. Most wheel (maybe not red wheels) do not have that big a problem so with just a little bit texture will be enough!

Post Mon Mar 30, 2009 11:00 am 
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Nick
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Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW


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The MDF flooring had a serious road test at the Ideas festival. The results were mixed:

    Regular flat acrylic paint did a good job for traction, everybody liked it.

    Spinners really tear it up, particularly at the seams.

    Unless they are secured, the sheets will definitely move, adding the the wear from spinners

    The damage sometimes covered wide areas, too much for the glue-in patch to work at times.


The idea we had to taper the sheet edges should help reduce spinner damage, but I think we will need to make sure the floor is extra flat so that edges can't raise up & get shredded. The paint sounds like it will be excellent.

Post Mon Mar 30, 2009 12:45 pm 
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Russell



Joined: 16 Aug 2004
Posts: 90
Location: Sydney


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To stop the edged moving the sheets of MDF will be glued and biscuited to the sheet next to it.
To help the sheets stay flat they will be laid in a brick pattern.

Post Mon Mar 30, 2009 1:42 pm 
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