<HTML style="FONT-SIZE: x-small; FONT-FAMILY: MS Sans Serif"><HEAD> <META http-equiv=Content-Type content="text/html; charset=windows-1251"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR></HEAD> <BODY> <P> <DIV>Bob Hull said: "<FONT size=+0>Background: Yesterday I was trying to repair an</FONT> <DIV><FONT size=+0>Everett console that had a separation crack between</FONT></DIV> <DIV><FONT size=+0>the last lamination of the pinblock and the back beam.</FONT></DIV> <DIV><FONT size=+0>I guess it's glue joint failure and a downward</FONT></DIV> <DIV><FONT size=+0>warping of the wood from the downward pull of the</FONT></DIV> <DIV><FONT size=+0>tuning pins. </FONT></DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0>I made plans to install 3 bolts 3/8" x 5"L after</FONT></DIV> <DIV><FONT size=+0>applying CA down in the crack. However, drilling</FONT></DIV> <DIV><FONT size=+0>through the plate took about 45 minutes to do 1 hole. </FONT></DIV> <DIV><FONT size=+0>I used a carbide tipped masonry bit per the suggestion</FONT></DIV> <DIV><FONT size=+0>of a industrial machine tool and supply co. I also</FONT></DIV> <DIV><FONT size=+0>tried using a 1/4" bit first and then progressing to a</FONT></DIV> <DIV><FONT size=+0>3/8" bit. So, I wound up just installing 1 bolt due</FONT></DIV> <DIV><FONT size=+0>to time restraints. </FONT></DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0>I have done this repair a few times before but it's</FONT></DIV> <DIV><FONT size=+0>been awhile and I don't remember it taking this long</FONT></DIV> <DIV><FONT size=+0>to drill thru the plate. I used a good low rpm</FONT></DIV> <DIV><FONT size=+0>electric drill vsr 0-600 rpms.</FONT></DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0>Any drill bit recommendations?"</FONT></DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0></FONT> </DIV> <DIV><FONT size=+0>Bob,</FONT></DIV> <DIV><FONT size=3>Just use a Sharp Jobbers Bit and be done with it! No need to use a carbide bit, IMO. Also, use a high speed/torque drill! IMO, you got bum advice from the machine tool jjoint!</FONT></DIV></DIV> <DIV> </DIV> <DIV> </DIV> <DIV>Joseph Garrett, R.P.T.</DIV> <DIV>Captain, Tool Police</DIV> <DIV>Squares R I</DIV> <DIV> </DIV> <P></P></BODY></HTML>