"John" wrote in message
g.com...
I built an adjustable fixture that allows me to make very accurate loose
mortise and tenon joints. I have been using tenons fabricated from
hardwood, either Oak or Poplar. Needless to say, it requires some work to
achieve the 1/4 inch thickness required for a tight joint.
I am now considering using 1/4 inch tempered hardboard. It is stable,
strong and has a uniform thickness. Any have experience with this
technique??

John




Buy a 6mm bit, then buy these,
http://www.festoolusa.com/products/d...mm-494939.html

Then buy this,
http://www.festoolusa.com/products/d...em-574258.html