You can simply use an angled miger gague on your TS, with a box joint jig (long board screwed to the gague with a pin) to cut the slots in your side pieces (stiles?)- with a dado head set to the thickness of your louvers. Make sure the boards that you are slotting have additional length to them, as it gets kinda hairy trying to cut the last four or so slots without the extra length. Measure the length of that slot (from longest to longest), plane your louvers to the thickness of your slots & rip the edges of the louvers so the edges of the louvers are angled to match the front of the frame. You could do the same with a router table & a box joint jig i would imagine, though Ihave not done it that way. Also, the RAS could be used with a dado head & the RAS head turned to cut your appropriate angle. Make sure you engineer a stop system so the slots are the same distance apart. Remember, the larger the louvers (in width) and the greater the angle of the louver the less slots you have to make. HTHs Phil