Although I have made about five dining tables I still consider myself a beginner. My first three tables I used pocket holes to join the table top. The last two I strictly used glue and clamps and made a strong table top. I have been asked to make 13 tables 54 matching benches for a brewery. Each table will be 30 inches wide and 12 feet long. They will have wide metal legs and I will have three legs per table. My question is how would you join the boards for the table top? I Purchased a Dowling jig and tried it on some scrap pieces but even using the jig the holes were not lining up and I was unable to do a dry fit. The dowels would get stuck inside and then I was unable to push the boards together closer or pull them back apart. Because this is a commercial order I want to ensure that these tables are going to stand up to the abuse that they will get Because this is a commercial order I want to ensure that these tables are going to stand up to the abuse that they will get. While I do have a 6 inch jointer and a 15 inch planer I will be using the tablesaw to create flat edges for jointing because the boards will be too long to run through my jointer. I appreciate any advice you can give.