Question about Stanley Bostitch MIIIFN Flooring Nailers

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Bostitch Flooring Stapler is making dents

We are using a Bostitch Flooring Stapler to install 1/2" hardwood flooring. The small metal "pads" on either side of the staple slot are creating tiny dents in the edges of the boards, even though we're trying not to use too much force when hitting the trigger. The manual says to remove the bumper spacer (p/n 118076), item 22 on the schematic. Could this bumper spacer be the problem, and if so, how can we get it out?

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Is the flooring a solid wood flooring or is it an engineered? Is the stapler an MIIIFS or a SX150 or a LHF97125? If its solid then its a square edge board nad it its not centered on the flooring properly it will dent the ens.

Posted on Feb 16, 2009

  • Kevin O'Leary Feb 16, 2009

    the bumper spacer is a metal ring. The rubber bumper must stay in the gun. To remove ring remove the 4 bolts holding the black shoe to the yellow body.

    this will not eliminate the dents ont the sides. The ring will only allow the stapler to sink deeper into the groove. If you do not have a problem with the depth of hte staple, leave it alone.

    dents are caused by a the edge of the nailer being up against the 90 degree floor edge, if there is no bevel on the woods edge you can only lesson the dents by being more cautious on the positioning of the nailer to the board



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