Is there any easy way to get an "up side down" wedge

>>1063264
1. Cut diagonals in light wood and then glue to dark wood.

2. How wide of an opening at the surface of the light wood can you live with? You could use a dovetail router bit to cut something like this.

>>1063316
It's actually a single piece of wood, my illustration is just shitty. It's part of a window.
>dovetail router bit
ah, yes. That could work. Opening size is not critical. Maybe I can find one at work.

You should probably tell us what you're attempting to do bc it looks retarded but... hog out the hole with a drill and clean up the edges with a chisel. Or simply use some combination of chisel, drill or coping saw.

Op get an all direction grit hacksaw blade like:

https://www.walmart.com/ip/M.-K.-Morse-HRCTCG12-Grit-Rod-Saw-12-RODSAW-BLADE/38752625?wmlspartner=wlpa&selectedSellerId=335&adid=22222222228026728111&wl0=&wl1=g&wl2=m&wl3=52590892151&wl4=pla-84470947871&wl5=9010435&wl6=&wl7=&wl8=&wl9=pla&wl10=111830463&wl11=online&wl12=38752625&wl13=&veh=sem

Works perfectly with wood btw

Drill a hole large enough to slip the blade through

String it to your hack saw and get the rough shape, by then you should be able to slip in a straight hack saw blade or a coping saw blade and straighten out the triangle

Circular saw set at a 45 degree angle.

>>1063341
Yeah, after looking at dovetailing stuff, suggested by >>1063316 I saw these too. Looks pretty perfect, so thanks a bunch