Smooth cut

To make the hatch I used double sided tape to stick the old hatch to this one, put it up on some blocks and then used a jigsaw to make the rough cut

I then used a large (1 inch cutting blade) router trim bit to make the clean cut followed by a 1/4 round bit to clean up the edge on the top side so that the sharp edge doesn't cut through the carpet

Purchased the .5 sheet to install casters on a large storage bin - this is .25 used it for a work surface works well tough cuts w/o a problem and the price is comparable to good quality plywood

Item was flat and unwarped, surface was smooth with no scratches or dents, very clean cut edges, and corners are square.