i'm looking for a drill bit that can put a #8 hole and coutnersink in a single piece, specifically NOT the type with an adjustable countersink near the end.
ideally something like the picture but i have no need for the threaded part, need to drill through ~2" thick wood.
problem with adjustable is after drilling a large quantity of pieces the countersink segment comes a bit lose and moves on me, requiring readjusting.
this is what i use now, works fine most of the time. does not have to be quick-change type as this work is done in a drill press.
if a single piece bit doesn't exist, any recommendation on best drill bit with countersink and/or countersink on its own?
>>958188
>this is what i use now, works fine most of the time. does not have to be quick-change type as this work is done in a drill press.
My advice would be to just keep on using what you are using, but use a Dremel to grind little divots in the drill bit for the countersink set screws. Then locktite the set screws in place with the unbreakable locktite, so they stay there forever.
Another way would be to braze the countersinks in place on the drill bits.
This will ruin the drill bit, but who gives a shit. It is the cheapest solution that will do what you want.
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There are places that will make a single-piece tool bit like what you want, but they would charge you $100+ each. And that would be for ordering dozens of the same bit, in one size.
>>958214
I swear by these trend countersinks. They work brilliant in wood and well in metal with a bit of lube.
The counter sink and hex arbor is one piece and the drill is removable so the issue of becoming loose is eliminated.
my level
>>958233
2nd. I've never had the bit shift in a Snappy countersink.
alright i'll look into these and probably also go with the locktite on one of the bits, thanks everyone.
>>958293
These...about $9.00 at Lee Valley, easy to resharpen...
>>958262
I don't use cut thread wood screws tho :-(
>>958262
My workmate swears by the C6. In fact he has a dedicated drill just for that size to live in.
C6 is your friend. It fits 90% of the crews you will need to sink. You can also sharpen them easilly and replace the bit if it breaks with an allen wrench. However avoid the countersink sets by Irwin, those bitches always wobble and come loose.
>>959585
As long as it's a taper bit. A straight 9/64" bit drills too loose for my liking for #6 and 8s. I prefer a C5 for #8 production screws.
