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Drill Bit Size for Atlas Flex Track

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  • Member since
    February 2008
  • 28 posts
Drill Bit Size for Atlas Flex Track
Posted by GKMDB on Friday, July 4, 2008 7:35 AM
After reading many posts, it seems most guys use latex caulk to hold track in place but I was planning to use track nails on my Atlas flextrack so I can easily remove it later should I move.  Some of the ties are pre-drilled half way through from the bottom.  Does anyone know what size drill bit I need to purchase to finish drilling out the hole.  On the Micro-Mark website, they have small drill bits and they are referenced by number (#61, #62, #63...#70, etc).  Does anyone know what number I need to use?  I may try using latex caulk on some more visible sections of straight track.  My roadbed is painted Homasote board (I did not paint over the pencil center line).  I assume I will be able to pry up the track later without damaging it if I use very little caulk. Thanks for any suggestions.
  • Member since
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  • From: Ontario, Canada
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Posted by Ballantrae Road on Friday, July 4, 2008 9:42 AM

I have a mix of both Peco and Atlas flextrack. The Peco track ties are softer than the Atlas ties so you don't have to drill holes (you may bend a few nails here and there though) and the Peco nails hold fine in Homasote.  Yes the Atlas holes are a bit larger but the Peco nails still hold. I'm sure Atlas has nails for their own flextrack.

Otherwise just get smallest drill you can find closest to whatever nails you'll use.

Caution: Once you nail down the track and then ballast it my experience is the track is almost unuseable if you ever have to remove it. Glue,ballast, nail holes, etc....best to get new track.

 

Good luck

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  • From: Bennettsville, South Carolina
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Posted by dieselfan04 on Friday, July 4, 2008 9:46 AM

What size are your nails? I have used track spikes along the edge of the rails. This way the spikes would not be seen.

 

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Posted by loathar on Friday, July 4, 2008 10:21 AM
A 1/64" bit works fine. Those numbered hobby bits like a #61 are kind of fragile.
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Posted by GKMDB on Friday, July 4, 2008 11:59 AM
The nails I have (from long ago) are about 1/4" long and fit through the pre-dilled hole in the Atlas track.  I will try to find a 1/64" bit.  I don't know of Lowe's or Menard's would carry such a small size.  Thanks for the suggestion.
  • Member since
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Posted by tomikawaTT on Friday, July 4, 2008 1:42 PM

I opened the tie holes in my Atlas code 83 concrete tie flex with one of the track nails.  Cut off the nailhead, chuck the nail in a Dremel tool and attack with great gusto.

As far as recovering track that has been laid with caulk, the cleanup is a bit tedious, but the flex remained undamaged (and has since been re-laid.)  OTOH, track that has been ballasted might require a swim in a washtub to loosen the (hopefully water soluble) glue and roadbed fragments.  (Don't do it in your bathtub unless you have a very understanding wife and a brother in the plumbing business!)

I have some flex on my present layout that has been re-laid as many as five times.  It has been anchored with everything from spikes to caulk.  The main thing is to be gentle when lifting it.

Chuck (modeling Central Japan in September, 1964 - on re-lay flex with hand-laid specialwork)

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Posted by locoi1sa on Friday, July 4, 2008 8:36 PM

  I have recovered track that has been glued with white glue and ballasted. Buy yourself a bottle of windshield washer solvent from wallmart or any where you prefer. The kind you pour into the cars bottle to squirt the windshield. Pour some on an old rag soaking it well and set it on the track and let it soak into the ballast. Wait a few minutes and place a small flexible putty knife under the ties and just simply lift the track and ballast. Clean it with soap and water and rinse well.

  This works well if you only glue with white glue like I do. I have mostly recycled track on my latest module.

    Pete
 

 I pray every day I break even, Cause I can really use the money!

 I started with nothing and still have most of it left!

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Posted by abbieleibowitz on Friday, July 4, 2008 9:22 PM
I don't drill the holes, I take a push-pin - the kind you buy in Staples for bulletin boards, and just push it through from the back. It pierces the tie and makes enough of a hole so you can tack a track nail through it. I actually use latex caulk to hold the track to the road bed and use push-pins to hold the track in place until the caulk sets up, usually overnight. You don't need a lot of caulk, but it is important (IMHO) that you make sure to spread it so that the whole piece of flex track is fastened to the roadbed. I had some spots I missed and the track had some play in it so that it would lower and rise as the train went over it. It is not easy to shove more caulk under a single section of a 3 foot length of track once the rest is fastened.
Abbie

Lefty

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Posted by salt water cowboy on Thursday, July 10, 2008 10:14 AM

 GKMDB wrote:
The nails I have (from long ago) are about 1/4" long and fit through the pre-dilled hole in the Atlas track.  I will try to find a 1/64" bit.  I don't know of Lowe's or Menard's would carry such a small size.  Thanks for the suggestion.

I too tack my track down instead of gluing it for about the same reasons as you have about prying it up, damaging it, having to clean it etc.  I have found after many years that once tacked and ballasted, the ballast glue if strong enough will hold the track very securely to cork. I use 1.75oz wire brads purchased at Lowes. $ .97  for about a zillion of 'em. The drawbacks they do have is (with any nail or tack) if you hit too hard with a mini hammer, they will bend the ties down in the middle and possibly kink the rails out of gauge. Also the brads I use are very shiny silver in color and must be painted to blend in or else they will look very unrealistic. I don't bother with drilling, just a dimple put into the tie with a sharp tack is enough for the brad to break through and hold the track.

Matt

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Posted by doctorwayne on Thursday, July 10, 2008 11:40 AM

I can't say that it's the case with all Atlas flex track, but their code 83 flex has the holes cast into the ties, although most are not readily apparent.  Simply flip the track upside down and use an Atlas track spike, held with pliers, to gently "punch" the holes through.  And Atlas track spikes are reasonably-priced and pre-blackened, too.  They're .035" in diameter, so a #65 drill bit (or any up to about a #61) will work well if you need to drill any extra holes.

Wayne 

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Posted by salt water cowboy on Thursday, July 10, 2008 3:15 PM
 doctorwayne wrote:

I can't say that it's the case with all Atlas flex track, but their code 83 flex has the holes cast into the ties, although most are not readily apparent.  Simply flip the track upside down and use an Atlas track spike, held with pliers, to gently "punch" the holes through.  And Atlas track spikes are reasonably-priced and pre-blackened, too.  They're .035" in diameter, so a #65 drill bit (or any up to about a #61) will work well if you need to drill any extra holes.

Wayne 

Code 100 also has holes cast into the ties but sometimes those particular ties need to be removed during the cutting/fitting process and then it's necessary to make your own on occasion.

Matt

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