Replies

1. 
   mikeddd | Aug 07, 2009 01:36am | #1

    Plywood is bad for that, try a piece of scrap materal behind the plywood at the exit points of the router bit. Good luck.

   Mike

1. 
   Michael503 | Aug 07, 2009 03:29am | #2

   Yup, gonna need a backer block for sure, preferably a dense close fitting one. Tape just keeps the splinters from ending up on the floor.

1. 
   cicero | Aug 07, 2009 03:36am | #3

   I wouldn't entertain plywood as drawer sides,but then,thats me.

2. 
   fxston | Aug 07, 2009 04:21am | #7

   Thank you!!

2. 
   fxston | Aug 07, 2009 04:20am | #6

   Thank you!!Rex

2. 
   oldhand | Aug 07, 2009 03:56am | #4

   A lot depends on the 12 birch. Baltic birch can well make a functional , economical box. The chinese birch is all I can get locally at present and I'm not sure it is actually suitable for ####decent drawer.

   .
1. 
   fxston | Aug 07, 2009 04:19am | #5

   You are so right. The plywood I have is from China and seems inferior. Thanks for your help.
   Rex

3. 
   forestgirl | Aug 07, 2009 08:55am | #8

   Backer-board for sure.  But you may still have a little problem with plywood.  I've only done box-joints in Baltic Birch ply (many more layers than standard plywood), and they worked great, but I got little "flags" at the back side (exit site) of the slots -- using a table saw with a Freud Box Joint Cutter.  Responses when I posted this on the forum were that (a) that's common and (b) the way to avoid the flags is to score the bottom of the notches before cutting them (i.e., score a line cross-ways on the board, right where the bottom of the slots would be).

   Can't say that I tried it, as I've not made any box joints since then, but it seems a reasonable solution (in case you experience the same problem).

   forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-)