Chris Waring
Hi. I am about to start making a static grass applicator using a positive ion generator that I have. I understand the electronics and the mechanics of making the applicator but don't know how the mesh size relates to the fibres length. What would be the recomended mesh size for say 2, 5, 7 and 10 mm fibres? I will be able to make more than one mesh so would like to match mesh to fibres. Chris Waring.
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Chris Waring

Oh I thought someone would

Oh I thought someone would know. Here's another question. Do the fibers fall through the mesh as easily when it is energised as when it isn't? Chris Waring.
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Alexedwin

Hi ChrisI used the mesh from

Hi Chris

I used the stainless steel mesh from a cheap tea strainer.

I cut  it out of the plastic frame & flattened it out.

Unfortunately I can't show you any photos of it because of the loss of my stuff! in floods.

It did work however & I built one for a friend who lives too far away from me now.

Cheers

Alex

One day I might be modeling the Puffing Billy Railway, Victoria, Australia.

My location - Queensland, Australia.

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engineer

Different meshes

I'm using different meshes - depending of fibre length and how large the area to apply the fibres is.

Short fibres -> fine mesh, long fibres -> not so fine mesh

Small area, fine details -> fine mesh, large area, no details -> not so fine mesh

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Somewhere Southwest at MRH: http://model-railroad-hobbyist.com/node/21520
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187

Different meshes

Where do I find different size meshes? Just keep looking at every tea strainer I can find? Blayne

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Alexedwin

There are flour sieves that I

There are flour sieves that I have but not used yet.

Cheep too! At the dollar stores.

Google sieves, heaps show up.

Alex

One day I might be modeling the Puffing Billy Railway, Victoria, Australia.

My location - Queensland, Australia.

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Chris Waring

Thanks for your comments I

Thanks for your comments I will start looking around for sieves with a suitable mesh size. Chris Waring.
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tommypelley

mesh sizes

i used a small dry good sifter for my fly swatter conversion. i was lucky enough to find one with a handle that came off easily and mounted to the fly swatter handle just as easily. it works great but you have to be careful to not touch any exposed metal parts.

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Michael Whiteman

Brass window screen

is what I used.  You can solder the wire directly on the brass.  This mesh works fine for 2 and 4mm fiber.  I haven't tried anything longer, but see no reason why it should be a problem.  Just shake it harder if the fibers won't fall through.  I would think that a tea strainer would be too tight a mesh and not allow the fibers to pass through easily.  There is no difference between an energized and non energized state.

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rsn48

I bought my mesh sieve from a

I bought my mesh sieve from a dollar store, three in a package.  The only negative is the mess isn't that large so stuff could jump out the top; this was easily solved using a plastic margarine container top with a rubber band glued on.  I have used the same sized mesh for both short and long grass, didn't really seem to be a problem.  The static grass goes through the mess even though magnetized without any problems.

Most folk don't do large areas in one go and will usually hit a few square feet at most in one go; your mileage may vary.  Don't sweat the grass sticking and all that, the skill comes in the blending of various grasses, don't use one uniform blend, it won't look quite right as nature isn't uniform. 

Mine is the electric fly swatter modified to be a static grass applicator, videos of it on youtube.  Some started sweating the voltage of batteries, another not important worry.  My fly swatter applicator uses two double A's with no problem.

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lpentz

Longer grass needs wider mesh

My applicator uses a reservoir made from a plastic food storage container so I can have a variety of meshes in several different lids.  I like to use 6 mm Noch grass for wild areas and found this will not go through tea strainers or screen wire nearly as well as the 2 - 4 mm sizes will.  I pulled out every other strand in a piece of screen wire leaving holes about 3 mm across and this works very well.

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