Barry- do you have a mat cutter? While not CHEAP, I suspect a Logan 650 would be a lot cheaper than a 40" Rota-Trim, and could be found used with relative ease. It was a few years ago but I found my Logan on Ebay new-in-box overstock for $350 +/-. List price is about $700. It was a worthwhile investment though - it paid for itself my first Artomatic when I had 12 20x24 frames to put up on the wall.