Review on 🔩 Amana Tool Adjustable Carbide Countersink Bit by Rich Ferguson

Only used this for a few holes but thought I'd share my first opinion. I have used several countersinks on wood screws and my main concern is how smooth the outside edge of the hole is and how repeatable the depth of the countersink is. I've tried snappy, cheap ryobi, and a few others. The best I've found so far are sold by Lee Valley and made by an Israeli company. I got clean, splinter free holes on pine plywood with this product. I look at the packaging, it says 'Made in Israel'. I believe Amana made a deal with the same company. I haven't tested the countersink as is done for the plug that covers the screw. Won't scratch the surface as the collar doesn't rotate. When you adjust the depth gauge, you always have a perfect hole that exactly matches the screw head. The only downside to this product is that the collar completely blocks your view of the descent. At this point, if you can't put your head down to look under the workpiece, you're blind drilling. It just takes some getting used to. The depth is controlled by the collar so you don't have to see what's going on. You really need to slow the drill down when the countersink is engaged. In general, countersinks like to cut slowly when you want a smooth edge. I'm trying around 200 rpm for these size reducers. If you don't want to spend money on this, a pretty good hole can be made with a Ryobi set AFTER you've sharpened both sides of all the blades. An Ez-Lap or similar DMT tool or small sharpening card will work for this. (and they're diamond grit, so if you drill enough holes to dull them, they'll also sharpen this countersink) This series of countersinks includes multiple diameter drill bits. This is a drill bit for carving a modern #8 wood or deck screw. Consider what type of screws you will be using and if they have a lightweight shank that goes through the top work piece. I'll probably buy 1/8" for that case. Also, I've learned that wood screws, at least the GRK brand, have a 90 degree head. Self tapping screws and machine screws are British Standard (USA) and have an 82 degree angle Screws for very thin parts (sheet metal for airplanes or electronics) sometimes have 100 degree corks, but only countersinks Hand drilling with standard six-point countersinks found at hardware stores either burns the wood because they aren't sharp, or mostly it wobbles in the hole and rattles Try it Put a light machine oil on the contact under the snap ring Made a difference for me.