# Geometry Problem

 Forum topic by Don46 posted 10-19-2009 02:14 AM 1057 views 0 times favorited 8 replies
 Don4643 posts in 2254 days 10-19-2009 02:14 AM Topic tags/keywords: angles miters sled lap joint I’m building a wine cellar with a wall of four built in units, the top one being a 7 foot wide x 10 inch high (external dimensions) horizontal cabinet. I want to insert diagonal “shelves” using 1×4 half inch oak boards to create a visually pleasing row of individual bottles above the main units. I want to make the diagonal Xs come out evenly, so I have subdivided the cabinet into three sections, and have room for 3 Xs on each side and 4 in the middle. Each X on the side is 8.5 inches high by 7.5 inches wide on the sides, and 8.5 high by 7 inches wide for the middle. I want to miter cut the ends and use a half lap joint at the center of the Xs. How does one figure out the angles to set the miter saw to cut the ends? For the half lap joints I am using my table saw. I know how to do this for 90 degree Xs: I use my cross cut sled on the table saw and cut out slots half way through the 1×4 oak. What angle should I cut these lap joints?What is the best way to do this for an angle cut that is not a 90 degree cut? -- --Don, Columbia, SC