I have a finished wood slab I will use for a counter. It has cracks, not wide, some go all the way through. The cracks were filled but have opened. I want to seal the cracks with something that also will prevent furqq)lther cracks. Since it is finished with a iron acetate stain I want to minimize the amount of sanding. So was thinking of epoxy added with a syringe. Any advice as to what epoxy and my wife hates any chemical smell.