This is my first attempt at DT's using the PC 4212. The box was an after thought, hated to waste the wood, even if it was just scrap.Started just to see if I could do 4 pieces of wood to all fit and be square. Setup was less than 10 minuets. The joints were tight, tails a bit proud, but very acceptable, just couldn't toss into the burn box, hence a quick top and bottom. I would have to give this jig an A for ease of use, The onley problem was the bit depth guide. It is a ROUNDED piece of plastic and the bottems of the bits have a slightly different profile, the cause of the tails being a bit proud.For my first attempt and never using any other DT jig, I would have to recomend it. Just my thoughts,for what ever it is worth.