"Charlie S." wrote in message
news:AdaQe.1164$wE1.598@trndny01...
Need to cut up a number of 4x4's and 4x6's. I've already cut a number of
4x4's using a 7.25 inch circular saw. Found it too difficult to get a
straight cut even using blocks and penciling all the edges. Being
dis-mechanically inclined doesn't help.

To make the straight cut you may just want the speed square. It is a
triangle piece of steel that you slap up against the line that you mark on
the wood that is the distance from the blade to the edge of the saw and run
the saw along the square.