Forstner bits

[Stephanie H]

Who makes the best, long lasting bits that will not cost me an arm and a leg? Or is this just one of those things you get to replace more often then I want?

[Ken Darga]

I have a set of Forstner bits, from Rockler, as well as from others.

Good price for the larger set from Rockler.

I've drilled lots of holes with most of them, and they've served me well for several years.

I touch up the cutting edges, to keep them sharpened, using diamond steel files, such as the machinist files, offer by EZE-LAP.

I've found most cheap bits, do not have the brad point "centered", 

as well as not keenly sharpened to provide a clean cut hole. 

I've found many to also have burrs on the cutting edges.

If the brad point is off, by even a 1/64", you'll not get a good clean hole. 

If you only need a small number of sizes, and plan to drill lots of holes on a daily basis, 

then get a higher quality made bit.

[Stephanie H]

I bought a 2" Diablo brand. Wore out fast. I am cutting A LOT of 2" holes in about 60 - - 2 x 4 x 10 pieces. 3 holes each piece. I already have a simple 8 piece set. But I need this 2" bit for this project I am working on. Appreciate the info.

[Tim Grace]

I've been extremely disappointed with the Diablo bits. The fact that the are a Freud product makes them even more disappointing. I had a 1½" Diablo that lasted one 5/8" deep hole. I found the Woodtek brand on Amazon that works well and lasts. I needed a 2½" inch to bore out the inner diameter of bracelets on a lathe. It has worked perfectly for 15 bracelets ranging in thickness from 5/8" to 1¼", even though my lathe won't slow to the recommended speed. I also ordered 1-9/16" & 1-5/8" bits for boring cups to hold tea lights and votives, and they also performed much better than the Diablo. I have a set of Porter Cable bits for sizes 1-3/8" and under that I've never had an issue with.
As Ken mentioned, I do touch up the cutting edges with the EZ Lap diamond hones before each use. If you are cutting into pine, cedar or other soft woods, be sure that pitch is not building up on the bit, as well.

[Stephanie H]

Thanks Tim. I felt the same way about the Diablo. Thankfully, I only bought the one 2" for my Fishing rod holder I made a few years back. I have a Porter Cable set but it doesn't go up to the 2" size. This purchase was a quick trip to the big box store. I habe now purchased 2 through Rockler. If those fail, Woodtex will be next. So frustrating.

[Ken Darga]

I've used the Diablo drill bits, and didn't experience any problems.

Prior to use, I keenly sharpened the cutting edges, and they performed without any problems.

They cut as clean as others I've used.