I am working on a design project the will require specialty drill bits to make the project economical.
I have to bore flat bottomed holes (like a Forstner bit makes) 1/4" deep in various diameters from 3/4" to 2" and then drill a through hole that is centered on the flat bottomed hole in various diameters from 3/8" to3/4". These holes sets will be drilled in 1X4 soft wood.
Ideally I would like to find Forstner bits that have 3/8" to 3/4" centers instead of brad points. Are there such tools? And as long as I am wishing, if the Forstner section of the bit had replaceable carbide cutters it would make things much easier. So has anyone seen such a tool or have any ideas where I might be able to get tools like this made?
For the prototype I used the appropriate sized Forstner bit to make the counter bore hole and then drilled a through hole with the standard twist drills of the appropriate size. To make this project most economical, I need to drill both the through hole and the counter bore in 1 operation. The scope of the project is huge and we will be making millions of holes so any way to combine operations will be very beneficial.
Thanks in advance Greg Postma