an angle between 29 degrees and 61 degrees with respect to guide rails 304 and 304 as shown in the figure second fence 308 is oriented at an angle of approximately 45 degrees with respect to guide rails 304 and 304 guide rails 303 and 304 constrain motion of saw 101 to a straight path by engaging opposing sides of the base plate of saw 101 as saw 101 rides on saw support surface 305 saw blade 102 passes through notch 306 to cut an object that may be set on cutting surface 309 and aligned against either fence 307 or fence 308 window 302 in saw support surface 305 between guide rails 303 and 304 allows a user to see that the object being cut is aligned properly within miter guide 30 between fences 307 and 308 window 302 does not span the entire distance between guide rails 303 and 304 so that a portion of saw support surface 305 is still available to support saw 101 the arrangement of guide rails 303 and 304 fences 307 and 308 with respect to saw support surface 305 and cutting surface 309 can be seen in fig3 a saw support surface 305 and cutting surface 309 are parallel fences 307 and 308 are on top of cutting surface 309 and saw support surface 305 is on top of fences 307 and 308 guide rails 303 and 304 are the above saw support surface 305 fences 307 and 308 are thus coupled to guide rails 303 and 304 through saw support surface 305 optional carrying handle 301 in cutting surface 309 makes miter guide 30 conveniently transportable alternatively optional carrying handle 301 could be placed at any.