Tools Confirmat Screw Two-Piece Drill Bit 7X 50mm. Made in THE USA

If you are going to be using confirmat screws on your melamine project this is a must have tool. It will predrill and countersink holes perfectly for the fastening of the joints.

A special tool for a special fastener. The screws only work correctly in a properly sized and shaped hole, so you pretty much need this cutter to make them quickly and in one step. Worked great for me in both particleboard and plywood. Expensive, (to me) but it is well made, and looks like it will last a long time.

These screws were the answer when working with melamine that can chip and crack easily.

I used this bit for two shelving units I built from 3/4" melamine MDF. It did a great job making holes that worked perfectly with 7x50mm Confirmat screws, with nice countersunk heads and no stripping. If you're using Confirmat screws, you should definitely have a bit like this.

These are a must have for confirmat screws. Work super well. So far so good. Have only used about 20 times so far and currently still sharp. Might get another for backup since I bought a boat load of screws as well.

For the price, this is an excellent bit. You do have to pull the bit in and out as it is rotating in order to clean out saw dust it creates, not a hardship, but not as smooth as a carbide one piece bit at 3x's the cost. I think this is an excellent route to take for cabinet assembly and I would suggest that during assembly the screws shouldn't be ultimately snugged up until the cabinet is squared up by attaching the back. I am impressed with the confirmat fastening system and the total lack of splitting end grain. For example I built some pullouts and needed to attach 12mm baltic birch ply wood at right angles to each other. The confirmat system handled this need without splitting the edge of the 12mm baltic birch plywood and held fast--that was impressive.

Bit snapped out of the collar on the 6th pilot hole I drilled

Works good

If you're building cabinets and planning to use confirmat screws - sometimes also called connector screws, although several different shaped fasteners use that name - this little drill bite will make you're life so much easier. It has a 3 stage profile that's just right for a 7x50mm confirmat screw so that your screws can bit firmly into the perpendicular panel and pull it tight against it's adjoining panel. The central drill bit has a brad-point so it cuts cleanly and doesn't wander on wooden panels. The shank has a 6mm hex profile so it's easy to chuck and stays securely in place without slipping. The larger profile cutters near the shank only have a single cutting surface and don't cut as cleanly as the brad point does - at least in the melamine coated particle board material I was using. It had a tendency to leave some of the surface material from the hole attached and hanging from the side of the hole which looks a little messy. This is maybe the one sub-optimal aspect of this bit, but it didn't tear out so it was easy enough to clean up afterwards. At almost $40, it's not exactly cheap but if you're building more than a few custom cabinets, this may be worth the investment to save you some time and get a nice end result.

This drill works very well. Make sure that you clear the chips as you go. I usually go into the hole 4 times before I get to full depth. Also, be sure to tighten the set screw on the side with an Allen key before you drill. Mine was lose when it was shipped and the drill got stuck in the first hole. It was easy enough to pull out with some pliers though.

je le recommande bon produit de qualité supérieure 👍

Works ok for what it's supposed to do. Dropping a star off as I think it's overpriced for what it is but didn't want to wait for my usual supplier to ship.