Replies

1. 
   IMERC | Oct 12, 2009 07:07pm | #1

   between these two you should perservere...

   http://www.idealindustries.com/products/wire_installation/fish_tapes/tuff-rod_fishing_poles.jsp

   http://www.idealindustries.com/products/tools_totes/saws_drill_bits/flexible_drill_bits.jsp

   Greenlee offers the same...

   http://www.greenlee.com/

   all of this is at yur BB... FWIW....

    

   Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming

   WOW!!! What a Ride!

   
   Forget the primal scream, just ROAR!!!

    

   "Some days it's just not worth chewing through the restraints"

2. 
   IMERC | Oct 12, 2009 07:11pm | #2

   http://www.mygreenlee.com/GreenleeDotCom/Products/main.shtml?greenlee_category_id=2&product_category=314&adodb_next_page=1

   http://www.mygreenlee.com/GreenleeDotCom/Products/main.shtml?p_search=fish%20stix&greenlee_category_id=100&Submit=Find

    

   Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming

   WOW!!! What a Ride!

   
   Forget the primal scream, just ROAR!!!

    

   "Some days it's just not worth chewing through the restraints"

3. 
   DanH | Oct 12, 2009 07:30pm | #3

   One important point: Drill through the ceiling, then DON'T SPIN THE DRILL as you push it through the insulation to contact the floor above. As the drill spins in the insulation it will collect a ball of fiberglass around it.

   As I stood before the gates I realized that I never want to be as certain about anything as were the people who built this place. --Rabbi Sheila Peltz, on her visit to Auschwitz
4. 
   PedroTheMule | Oct 12, 2009 07:32pm | #4

   Hi CCI,

   I've done this scenario a number of times to run network cables. As you mentioned, slightly over drill the top plate....In my case I only needed room for a network cable or two so my holes are probably a bit smaller than you may need.

   I predrill the top plate 3/4" with a good wood boring bit.

   I then use a long length 1/2" steel bit - one that has a small cutting head and tapered smooth shaft, not drilled up but rather pushed up tight to/thru the insulation and press it extra firm against the bottom of the subfloor, Please use good leather gloves for this next step as sometimes the drill bit will bite and it just plain don't feel good with what happends next.

   Anyhow, with the bit firmly pressed against the bottom side of the subfloor momentarily "reverse" the bit, this with plenty of firm pressure will cut through the insulation - how much rotation is required....just gotta feel for it....then with firm pressure still applied, switch the drill back to forward and bore right on through the subfloor.

   Lots of pressure when cutting will minimize any insulation tear out/wrap.

   Reverse the drill and back it out.

   Now keeping at the same angle use a sturday extremely straight rod of some sort to fish it up and through the holes you've drilled. For this type of work I find traditional fish tape to have too much curve and bend too easy. A 3/16th inch fiberglass rod type fish tool is awesome at this.

   Once you've gotten it pushed up into the knee wall area, tape your wire to the bottom of it, go to the attic and pull it through.....the fiberglass rods have enough flexibility that you can easily bend one end around to touch the other and it still springs back to a perfect "straight" tool.

   I've never bought from these listings but it does describe the rods I'm talking about here.....

   http://www.licensedelectrician.com/Store/KI/Wire-Pulling-Rods.htm 

   http://www.wctproducts.com/sectional_push_rod_menu.html 

   http://www.amazon.com/gp/product/B001RV4T3U

    

    

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1. 
   CCI | Oct 12, 2009 08:49pm | #5

   Thanks to all for the suggestions.

   The snaking part is no problem - I hope.  It was drilling thru the fibergalss batt.

   I will try the method of pushing up tight thru the fiberglass and against the subfloor - that sounds promising.

   Thanks for the help, as usual.

1. 
   PedroTheMule | Oct 12, 2009 08:53pm | #6

   Don't forget to use a steel drilling type of bit as it has less tendancy to grab the fiberglass

   and

   reverse the drill before cutting forward.......all important steps of experience....it's still not a perfect process but I've had excellent results all the way around.

    

    

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