Metal butterfly joint with patine
First of all... I'm not really a woodworker, but I have dabbled. Anyway I came across some large black walnut slabs. Of course they have a few checks in them and I want to strengthen them with butterfly/bowtie joints.
Here is the catch.... I'm more of a metal worker and I will be building the base out of steel, which I am going to give a gnarly patina. I want the butterflys to match the base (IE also made out of steel). I understand it is common practice to plane down butterflies to make them flush, but this will not be an option due to the patina. Any ideas or tips to make the butterfly fit perfect the first time?
Thank you and Cheers.