Welcome!
Ah the travails of DIY woodworking. I built transmission line bass cabinets in 1980. Everything was good (even though one ended up a 1/2 narrower than the plans called for) until I got to the veneering (which was before internet and very primitive in those days). Wouldn't dare show them online even if I had an image. But they sounded fantastic. Currently run commissioned AlNiCo single driver (Fostex F200a, 8 inch, no whizzer, no longer available) Martin King MathCad inspired transmission lines. Have heard and like Alpair drivers. And have owned speakers using first order crossovers.