i'm recycling a floor and im about 1/3 through re laying my old oak 500 sq feet. i bought a tongue and groove router bit set to fix any boards i needed to cut. The slot bit works like a charm mainly because the groove on the end of the board does not need to be perfect just the cross cut from the saw so no issue there.

The problem im running into is creating the tongues.
Two issues
1. The bit sometimes pulls the end of the board in creating an a round or not strait cut.

2.The major issue is the two cutters are not thick enough to cut all 3/4 of the board so i have 1/8 inch left on the board face that needs to be removed with a saw or something.

So my question is how to you pro's create a tongue in the field?

Thanks for all your help i can't wait to get to the next stage of the project.

you could rout both sides and put a slip tongue in. depends on how much square footage you have to do.

that is defiantly an option, i have about 100 or so boards that need to be fixed so i want to avoid doing that.

table saw

One trick is to butt another piece up to the one you're routing so it makes a single extra-long piece, so there isn't and edge to fall off of. Then the router keeps going straight. A router table can help keep the cuts straight - and there are tons of options for cutting tips so you can probably get a bigger one that won't leave the extra room.

HTH

Bob

thats a really good idea mulitple boards at once i'll try it tomorrow thanks for the tip.

Once more question

my house was built in 56 and the floor was original i can tell which end pieces were made at the mill and the ones that were made on site during install. the cuts were pretty clean and square do you think they lugged a table saw to the job site and made them with that or do you think they used a miter box?