Seal a wood Sink

[treesner]

I’ve always wanted to carve out a wood sink but not sure what to waterproof it with? Epoxy resin would waterproof it but not sure how I would get it to set up on the contours, usually that stuff needs 10 hours to setup and pretty liquidy to start? 

[wtnhighlander]

Coat it with fiberglass & resin, like a boat.

[Mark J]

I have also heard of people using Alumilite, but have no personal experience.  This video was linked at another forum.

 

[treesner]

Found this epoxy coating for walls, its a thickener with "Polyethylene fibers"

https://www.stonecoatcountertops.com/polyfiber-ii-epoxy-thickener/

"When thickening epoxy for vertical wall use we will thicken the epoxy on a 1:1 ratio. 1 quart of epoxy : 1 quart of PolyFiber"

[treesner]

this person does a reverse model to make a thick layer of epoxy 

 

[Don Z.]

WEST System 105 resin and 207 hardener.  207 is designed as a "clear finish" epoxy.  According to their tech notes, pot life is 20 to 26 minutes, and you can apply three coats a day.  Remember, thin coats, and there will be a bit of "absorption" in the first coat, so if that's thin enough, it should not sag.  Their web site states: "Builders also appreciate the excellent fiberglass wet-out characteristics achieved with 105 Resin/207 Special Clear Hardener, yet it won’t drain from vertical surfaces like the very slow curing, low-viscosity epoxies."

 

Four ounce cloth may also help seal it, but you should be fine with the epoxy.