Crazy Idea for finishing redwood
I am finishing a slab of redwood into a live edge table. The wood is soft and easily dented. The slab of redwood also had cracks in it. I slightly filled the under side of the cracks with Liquid Nails construction adhesive and then flipped the slap over and filled the top side of the cracks epoxy. This went very well, the construction adhesive prevented the epoxy from simply leaking out the bottom of the cracks.
I plan to use Varathane water based poly to finish the slab so I tested the Varathane on the bottom side of the slab. In the places where I had applied the construction adhesive I first sanded away the excess construction adhesive. Then I applied three coats of the Varathane water based poly to the bottom side. The finish looks great, but in the place where there was construction adhesive that had been sanded away, the finish is actually much harder and smoother. This was surprising to me.
This got me to thinking that since my redwood is so soft, maybe I should apply some construction adhesive to the top surface and then sand it away. This could potentially create a smooth and hard finish when combined with the Varathane water based poly. Is this a crazy idea? I am new to woodworking and I don't want to ruin my slab, but I also want a hard finish to prevent the table from being dented.