I am about 90% complete on my 1000 x 1000 OX build. I have done a few mods after researching many of the builds on the forum, including: extreme wheels, dual GT3 belts on X & Y, Idler wheels to increase belt engagement on X pulley, bonding X v-slot and extra wheels on Z axis. I'll start out with a 400W spindle to get my feet wet. I am considering using this configuration to make V carvings, signs and other items as a side business. Is this a realistic idea? I would consider upgrading the spindle and increasing size to 1500 x 1000 down the road if necessary. Do any of you use your OX for commercial applications?