Measuring Pillars

Discussion in 'Gunsmithing' started by robdaniels, Mar 27, 2014.

  1. robdaniels

    robdaniels Well-Known Member

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    Getting ready to pillar bed and full action bed a Remington CDL stock for a light varmint barrel, so I thought I would ask the rest of you how you measure the pillars.

    I will be measuring the pillars after I remove the wood from the inletting, leaving only a small amount on the rear tang area and using some tape on the barrel on the forearm to center the barrel and give me a good center line running the length of the rifle. I check the depth from the bottom of the stock at the trigger guard action screw holes to the bottom of the receiver 4 to 5 times to get a consistent measurement. That will be the measurement for the pillars plus adding 3 to 5 thousandths to insure good metal to metal contact with the trigger guard and the bottom of the receiver.

    What are your techniques?
     
  2. tinkerer

    tinkerer Well-Known Member

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    I'm pretty easy on this.

    Mount pillars to action with action screws. Insert into inletted stock and make sure they protrude out the bottom at least 1/4". Devcon into place and cut/sand pillars flush with stock. Since I only do this on stocks I am building, I finish them together for zero clearance.

    See? Easy.

    Larry
    Tinkerer
     

  3. phorwath

    phorwath Well-Known Member

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    Which tools/machines are you using to cut/sand the pillars flush to the stock?
     
  4. robdaniels

    robdaniels Well-Known Member

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    I have a set of calipers, drill press, files and the such. No lathe.
    In another member's video (Phil) he did the pillars with a drill press and it is very doable. Chuck the pillar, use a hack saw blade to cut and then sandpaper to fine tune.
     
  5. robdaniels

    robdaniels Well-Known Member

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    Come on Guys. Am I thinking right or way off base?
    Just want to be sure to do it right the first time.
     
  6. tinkerer

    tinkerer Well-Known Member

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    After the pillars are in the stock, I cut them off with a band saw, if necessary, and sand flush with a rotary drum in the drill press, and finally sand by hand with sanding block until satin finish.

    I try not to start with too much extra so I don't have to wrestle with them after.

    I usually start with the pillar pushed through the stock and pencil mark them about 1/4" long. Trim at band saw,

    Next I counterbore for the stock bolt head (1/4 X 28 socket head cap) so it sits just below the surface of the stock once bolted to the action.

    Again, this is when I am building the stock, so I don't mess the finish up as it is not on yet.

    Larry
    Tinkerer
     
  7. robdaniels

    robdaniels Well-Known Member

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    Thanks Larry.
    I have some aluminum tube stock that is 3/8 OD (aircraft grade ) and will have 25 thousands clearance of each side of the action screw once the screw is centered in the pillar. Is that enough?
     
  8. phorwath

    phorwath Well-Known Member

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    Appreciate the information. I have some 9/16" diameter aluminum pillars I need to set into a Manners stock. Never done this before so I'm in the research phase of my project also.
     
  9. tinkerer

    tinkerer Well-Known Member

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    My front pillars are 1/2" and I end up with the socket head below the surface of the wood. Heads are about 3/8" so with clearance , we're talking about 50 thousandth per side or so.

    My rear pillars are 3/8" and buried in the stock, so the socket head sits on top. Can't be seen.

    Look at the pillar bedding tutorial at 6mmbr.com for great advice.

    9/16" pillars are plenty big I would think.

    Good luck, post pics.

    Larry
    Tinkerer
     
  10. Clark

    Clark Well-Known Member

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    I make my pillars from Aluminum.
     

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