While working in my bow shop (basement) on removing some mass from some of my unseasoned staves, I was contemplating building a dry box to speed the drying process up a bit... I was thinking that after I whittled my stave into a bow blank, sealed it, and clamped it to a caul, I could insert the blank/caul into a door I could cut into my furnace pipe. There is a section of pipe that takes a 45 degree turn down before straightening out that I could install a sealed door. My furnace fan runs consistently and the heat turns on as needed per thermostat.
Thanks!