I have seen these bits being demo'd in a video and was pretty impressed.
The video shows how these bits continue to drill very nice clean holes well
past the competitors ability. Looked a bit too good to be true.
My lovely and dear wife bought me a set of Colt Twinland brad point bits for
Fathers day and while I appreciated the effort and thought, these bits were
not the "5 Star" bits that Colt manufactures. So, she and I took the bits
back to Woodcraft tonight and made an exchange for one 3/8" "5" Star bit.
Comparing the bits in the store I can say that the 5 Star bit reminded me
of the Kreg pocket hole bits as far as quality is concerned.
Anyway I put the bit in my new DP and tried it out. To see if the bit
indeed would cut as cleanly as the video indicated I elevated a piece of
3/4" thick Ipe and a piece of Oak 3/4" above the DP table so that the pieces
of wood would not be supported as the bit exited the bottom of the wood.
You know, you normally back the wood up so that there will be no tear out
when the bit exits.
On both pieces of wood there was no burning, there was no chip build up in
the flutes and the exit holes were as clean as the entry holes, with no back
up board. Absolutely no tear out on the bottom exit sides on any of the
Pretty darn clean cutting bits they are.
If you decide to try'em out for your self, they are kinda expensive. IIRC a
7 piece set in a wooden box is around $80. the single 3/8" bit was about
$14. BE SURE to get the "5Star" Twinland Colt Bits.
You can see the video through Infinitytools,