You may also consider getting your own tablesaw blade. An alternative to dominoes would be a tongue and groove joint or a glue joint (below is a link to a sample, there are different shapes and models)
https://www.amazon.com/Bestgle-Degree-Matched-Banding-Woodworking/dp/B07F1MC6ZH/ref=asc_df_B07F1MC6ZH?tag=bngsmtphsnus-20&linkCode=df0&hvadid=80882941681721&hvnetw=s&hvqmt=e&hvbmt=be&hvdev=m&hvlocint=&hvlocphy=&hvtargid=pla-4584482468640583&psc=1