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Senco SLP20 shoots blanks

The gun fires but the pin doesn't grab the top brad in the clip. The pin just makes a dent in the wood, as if there were no nails loaded. The problem used to happen rarely and has grown to be almost constant. Happens with a variety of brad sizes. The spring in the clip is working fine, as you can feel the increasing pressure of the nails as you close the clip.

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  • Michael Lowery Jun 23, 2013

    I found the SLP20 will fire one nail then won't feed, unless you use Senco staples. I can't get them in my area. If you put a micrometer on the nail head width, you see Senco nails are 74 and other brands are 76 or better. Find a bench grinder or fine grinding device and make a couple of light passes on either side of the nail row heads. Modify any brand and they should feed through the SPL20 with no problems. Michael, Rome, ga

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Posted on Jan 02, 2017

rowdy45176
  • 2176 Answers

SOURCE: Senco SN4 misfiring intermittently

This is a discontinued tool by Senco but there are still parts available for it. It sound to me that the o rings and possibly the firing valve need to be replaced. I would recommend going to Senco.com and you will find a complete parts diagram in their discontinued tool section. They also have a toll free number if needed and you can talk to their air pro. I have rebuilt quite a few of these and they are not that hard just make sure to clean all the parts and use lube when replacing O rings.

Posted on Jan 01, 2009

  • 10865 Answers

SOURCE: Bostitch nail gun loss of pressure, won't fire nail

Hello. I can help you. The nail gun you have uses 18 gauge brads. I would use only original Bostitch 18 gauge.

The one MM of difference you mention is the reason why you do not have the pressure you did have. Get rid of those 31MM brads and get the 18 gauge. Home Depot carries the Bostitch line. I would go there or to homedepot.com

Posted on May 20, 2009

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