When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I feel like with this you'd want it to cure slow, so that it has time to run down into any openings, hence the liquid (not gel) and hot engine.
The same process of applying the glue would be followed, but once it has been given time to flow where it needs to be, baking soda is applying to the top to kick off the chemical process.