Our USA handmade & Texas handmade furniture receive bowtie joinery to stabilize any naturally formed cracks which is common in urban lumber milled from salvaged dead trees.   Many of the trees that we salvage and re-purpose have been dead for 2-3 years and sometimes more.   Cracking is part of the natural character of urban lumber & rural lumber from re-purposed trees.   They can be filled with resin in various colored mica powders.  We prefer to keep the cracks as natural as possible as they become a unique feature of our custom furniture and wood slab tables.  We see many other makers who are using bowtie or butterfly joinery more as decorate inlays.   It is imperative that the depth of the bowtie is at least 50% of the thickness of the working surface.    For example, a live edge pecan table or a walnut mid-century dining table which is 2″ thick needs to receive at least a 1″ thick bowtie to ensure proper stabilization of the joint or crack.   All out tables receive 1-1/2″ thick bowties as we are building furniture pieces that are intended to be passed down through the generations.   We also call this “generational furniture” or heirloom furniture.