Replies

1. 
   _mj_ | Feb 01, 2021 06:14pm | #1

   Pin nailer and some glue.

2. 
   stantheman | Feb 04, 2021 04:25pm | #2

   1/8" diameter would mean 1/16" radius. Do you mean 1/4" diameter (1/8 x 1/8)?

1. 
   JP_Kennedy | Mar 17, 2021 07:29pm | #5

   Yes, you are correct. Thanks!

3. 
   esch5995 | Feb 04, 2021 10:02pm | #3

   I would be a little concerned on why there is a crack, but that aside, if your molding is truly that small no nailer will work. You would have to use some type of adhesive that can bond with finished wood, I'm assuming these are finished wood stairs. My first choice would probably be a thick ACC/CA glue with or without accelerator, followed by a polyurethane like the original Gorilla Glue, but that stuff is messy to work with because of the effervescence and I can't think of any way to clamp it.

4. 
   mikefm101 | Feb 04, 2021 11:40pm | #4

   By chance have the risers or treads shrunk as it’s winter?

   Just wondering if you wait a few months the problem may go away.

   If not wood glue can work. I’ve used CA as the clamp and it’s a trick that works. 23 gauge pinner maybe, too.

   Be sure to attach to either tread or riser but not both. Seasonal movement and all.

   Mike

1. 
   JP_Kennedy | Mar 17, 2021 07:32pm | #6

   Actually they didn't shrink from winter, the house is really old and they have had a space for a while.

   The 23 gauge pinner works well, but the one we have isn't setting the pin correctly despite PSI.

   Thanks for your help!

5. 
   _mj_ | Mar 17, 2021 08:22pm | #7

   My PC pin nailer as designed set the pins flush with the surface. I filed the nose off just a bit so it will sink them slightly.