I ended up building a 10‘ hot callus pipe today, I’m interested to see how this works out. Thanks for bringing this to my attention Dax. I’ll also attach some pics a guy on a Facebook chestnut site posted regarding his method to grow seedling. In regards to these grafts, I’ll try and get everyone an update around May 1.
*only change I would make to my grafts would be to leave some additional buds since I am now using this method. Hopefully the bud doesn’t sprout in the tube while I‘m out of town. I’ll put my other grafts in the tube next week, to compare.