Roman Carbide DC1887 Carbide Forstner Bit, 10mm

I was not careful enough, and a metal part of the vice holding the wood was right below the 3/4” MDF I was drilling using my drill press. I drilled into the vice, creating a hole. I have no doubt that this has shortened the life of this drill bit, but I have not yet seen any adverse effects - it still cuts clean holes in MDF. The bit is absolutely straight, and there is no wobble.

Yes its possible that some people get bad bits and tools in general from time to time. But you have to factor in whether or not that person is capable of using said item properly, a lot of people are not, so I usually take a risk on poorly rated items if they look to be well built. Most of the time I find that the items are satisfactory as is with this bit. The holes are flat, the holes are cut clean, what more can you ask from a forstner bit. The head's design doesn't lend itself to cutting holes at an angle but still doable with a little more patience.

Great for a small Forster bit. Cut well.

Clean sharp edges, no splintering or tearing even in end grain. Runs as true as my more expensive bits. I would buy again if I needed it. Thankfully, this still cuts like new even after boring many, many deep holes in hardwoods.

This was a nice sharp bit.

I don't know a fostner bit from a bit-a-honey, but I needed a 10mm bit to drill larger holes in guitar headstocks without damaging the headstock and leaving a clean hole. This is difficult with regular bits as there is already a smaller diameter hole there and other bits had issues with this. Just drilled out a headstock and the holes are clean and look good - installed the hipshot locking tuners perfectly in them. Worked well for me!!

Has a solid, premium feel to it. It cuts really well. 1 star deduction for not engraving the max rpm which is very important for forstner bits (~1000 rpm for the 30mm). Would buy again.

Under $50 for a 3" diameter, carbide tipped forstner bit seemed like a fantastic bargain, until I tried drilling with it. I chucked this impressively large drill bit into my tabletop drill press, hoping to bore a surgically neat 1/4" deep hole into a poplar board. I slowed my drill press to 600 RPM's; its lowest speed. The board was clamped in place to prevent it from moving. I allowed the tool to do the work; never forcing it. It spun nicely enough until it made contact with the board, and then wobbled so badly that I checked twice to make sure I had properly installed and tightened it in the chuck's jaws. Forstner bits are the tool of choice in woodworking when an exceptionally neat, round, flat-bottomed hole is to be made in wood. Poplar is among the softest of hardwoods. Yet this unbalanced forstner bit was barely up to the task. In fact, the ragged, eccentric hole it did produce ended up being nearly 10% larger in diameter than the size of the drill bit. I can drill an equally 'neat, accurate' hole with an ordinary steel-toothed holesaw and a handheld drill motor. My next option will be to use a router with pattern collar and template. Already beyond the return window and disgusted with my purchase, I promptly tossed the inferior drill bit into the metal recycling bin. Do not buy Roman Carbide Forstner Bits.