Here is what I did yesterday: made a long box to keep the wood and glue warm while curing.
Everything I needed was laying close at hand – literally! I had four old closet doors that I used as shelves a long time ago that were standing in the corner. I had used a couple of them as a flat work place to start gluing up the boards for my slab. I found 8 little metal angle braces with screws that I had bought a while back and never used. It is 78” long (my 72” boards fit just right) and 12” X 15” otherwise.
I will cover the ends with some old blankets.
And I had a single bulb and bare fixture hanging right beside my shop light. It was 40°F in the shop when I put the thermometer inside and closed the ends up with blankets.
Everything hooked up and ready to go.
I found that with an extra blanket on the top, it will stay 60°F inside all night. Even with outside temps as low as 7°F like last night.
-- Rodney, Arkansas