Belly hole bit question

[mikecc]

Originally Posted by gldnbear93

forstner or bradpoint bit. If you use a belly grommet, use a bit where you get a nice tight fit for the grommet. If you recess the grommet you will need two different sized bits, one for the grommet shaft and one for the flange.
If you do not use a grommet, start slowly drilling the hole to help avoid tearout.

Had these specially turned to match the belly grommet . 1 steps down for the depth of the swivel to meet the thru wire & O.D. Dia of the grommet.While the larger does the outside Dia of the flange of the grommet.
This does everything in 1 step and it is perfectly centered

[gldnbear93]

Nice!
Where did you get that done?

Originally Posted by mikecc

Had these specially turned to match the belly grommet . 1 steps down for the depth of the swivel to meet the thru wire & O.D. Dia of the grommet.While the larger does the outside Dia of the flange of the grommet.
This does everything in 1 step and it is perfectly centered

[mikecc]

If there is interest I'll look into having a few made.

[eastendlu]

Mike that is called a step drill and if you look hard enough you might find them already premade from the factory.