Bosch 1x EXPERT Self Cut Speed Spade Drill Bit (for Softwood, Particleboard, Ø 22.00 mm, Professional Accessory Rotary Drill/Drivers)

I replaced an ancient hole cutter of a similar design, also for 22mm holes, with this one. I was intending to cut holes in the side of a door to take a mortice lock. Using the old hole cutter, it just spun around and didn't take very much off at all. This Bosch hole cutter is exactly the opposite. It drags itself in thanks to the spiral tip, and chews through the wood at an almost alarming rate. I was using a hand brace and all my force was going into turning it as it pulled itself into the wood, taking a fairly hefty cut for each rotation. I didn't need to push on the brace at all (absolutely no push force required at all to get it to cut). It made a neat and tidy series of connected holes. The holes were overlapping to create the mortice lock cavity, and having measured when I was going to start each hole, the drill never veered off even though there was about 7mm of overlap between the holes. The wood didn't split, even though I was into the door by about 80mm, and drilling by hand. Because of how effective this drill bit is at getting through wood with a 22mm diameter, it has to be 5 stars. I'm just wondering what would happen if I put this into a power drill where the slowest speed was still say 1000rpm. I think it would just fly through the wood in milliseconds and perhaps not be very controllable. I'd say that if you're planning to use this with a power drill, make sure it has a slow start / infinitely variable speed control and take it very slowly. It'll need to have quite a lot of torque to turn this due to the depth of cut. Provided you can provide enough strength in your arm to stop the drill wrenching out of your hand, hole cutting this way will be fast, almost effortless, very effective, and neat.

A brilliant drill bit which did the job perfectly, making a clean hole in my plasterboard wall. Worth every penny and now a permanent fixture in my tool kit. 10/10!

An amazing product, makes drilling holes a breeze compared to traditional spade bits. Ideal for drilling holes into joists where it was tight for space and unable to put pressure on the impact driver. This self screwing mechanism made it a breeze.

Very good snd did a perfect job

Good drill bit. Used it to install TV on to wall with some grip it fixings.

Drilled nice round holes.

Quality item that's value for money nicely made

If you’re an Electrician drilling cable holes in joists this is the bit for you if you’re looking for something you can control to get exactly the right depth then it isn’t. It will certainly drill a lot of holes quickly. The spiral design literally pulls it through the timber with ruthless efficiency but it literally runs away with itself so if you’re a hobbyist or carpenter looking for a little more precision then it’s not for you.

penetra nel legno come un coltello nel burro. fantastica!

Great tool, works as expected

شكله ليس سيئ بالطبيعة وعملي جدا دقيق وسهل الاستعمال

Çok güzel bir ürün gayet sağlam ve kul kullanışlı

Non è la prima punta che uso, purtroppo questa mi serviva proprio e quindi l'ho presa su Amazon approfittando della consegna rapida ma sono rimasto deluso. La lama è poco affilata e sfilaccia i bordi del legno tenero mentre è inutilizzabile per legni più duri perché non penetra affatto. Bosch... ma che combini ultimamente? Non metto una stella per il ricordo che avevo del marchio, ma due stelle sono troppe.