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Bit Hardness Varies | Choose the Right One for the Mountain
Hello, everyone. This is Enta. This is a bit for a down-the-hole hammer. It’s a bit with a drilling diameter of about 110 mm, and I’ve used it to drill about 60 holes since it was brand new. And this is what it looks like now, lol. Here’s a side view. The main body is already worn down. I wonder if the cutting edges are worn out…
The Thrill of Drilling Operations | What Makes Being an Operator Rewarding
Hello, everyone. This is Enta. We’re drilling using drill bits, right? Here’s what a brand-new one looks like. It’s a standard ring bit. We want to use this for as long as possible, but we also want to drill as quickly as possible. So we tend to apply quite a bit of pressure while drilling…
Casing Tubes for Core Drilling Are Not Suitable for Rock Formations | Limitations
Hello, everyone. This is Enta. It’s finally starting to get cold, isn’t it! It’s super tough out here on the job site, lol. We’re doing this kind of work inside a tunnel, but—maybe because of the bedrock—the casing tubes get completely worn out from the drill bit. This one’s brand new. We’ve also attached the drill bit…
Cutting Steel! (Part 1) | Cutting Tools Series
Hello, everyone. This is Enta. Have you ever used a steel-cutting bit? I’ve used one twice in the past. That was during a catch basin project. I used it to cut liner plates. I think I used a composite type back then. This one…
Found a Great Product! (Bit for Single-Hole Drilling) | Drilling Tools
Hello, everyone. It’s Enta here. It looks like we’re already halfway through the year! lol Time flies, doesn’t it? Before you know it, we’ve gone from spring to the rainy season! It feels like it happened in the blink of an eye. Let’s stay focused and make it through the next six months safely! But anyway, this time, about this thing you’re all familiar with—something’s changed…
The Anobit Everyone’s Been Waiting For Is Finally Here | New Product
Hello, everyone. It’s Enta. It’s gotten cold all of a sudden, and it’s making me feel a little down. I hate the cold! Anyway, I was replacing all the hydraulic hoses on the drilling machine at work. It’s actually a pretty tedious job, but since someone has to do it, I’m the one handling it. However, well…
Bit Wear in Suspended Drilling Rigs | Consumables Management
Hello, everyone. This is Enta. The other day, I finished up at my current job site, so I moved the equipment to the next one. This site involved inserting rebar into 3.7-meter-deep holes, which made digging extremely difficult—the hole walls wouldn’t stay upright on their own. They’d collapse immediately, and the slurry wouldn’t come out. So, my personal best was 18 holes in a single day…
Tips for Drilling with a Suspended Drill (2018 Edition) | Efficient Operation
Hello, everyone. This is Enta. All I can say is, “It’s so hot!” lol The other day, the sleeve on my suspended core drill cracked. Well, that happens all the time. It usually cracks when there are a lot of dry runs. Operating a suspended core drill is surprisingly tricky, but you have to maintain constant tension…
Learning from Failure | How to Deal with Muscle Soreness and the Effects of Icing
Hello, everyone. This is Enta. Thanks to the tag-team game we played last Sunday, both my legs are sore. It seems I still have some muscle there, so it’s tough to move lol. I recommend icing to relieve this soreness! If you look it up online, you’ll find plenty of information. Anyway, just apply cold. For acute…



