True to its name, the Filamenta-Slit is a precision cutting tool made to create fine, thread-like bands. Where most PP-band cutters only split a band into equal parts, this one lets you cut slim bands to the exact millimeter. So whether you're doing delicate handcraft or careful design work, you can make any width you like — supporting your creations more precisely, and more beautifully.

The secret behind this precision is the set of built-in spacers. The tool comes with 30 of them — 14 white, 14 silver, and 2 black, each about 1 mm thick — so you can work with materials up to 30 mm wide. You'll notice they're "about" 1 mm rather than exactly 1 mm, and there's a reason: we make them on a home 3D printer. By the nature of 3D printing the thickness isn't perfectly uniform, but doing it this way — instead of relying on costly outside machining — keeps the price down. It's a small choice we made so we could offer this handy tool at a friendly price.

The Filamenta-Slit goes wherever you do. Hold it in your hand and cut freely, or fix it to a table for extra stability. That freedom to cut handheld comes from making the whole tool — body, bolts, and nuts — from lightweight ABS resin. At just around 120 g altogether, it's gentle on your hands even during long sessions, so you can enjoy precise cutting anytime, anywhere, in your favorite spot.

A safety bracket gently protects the fingertips that guide your tape and materials. It holds the material softly from above as you draw it through, so there's less snapping back or unexpected catching — and fewer of those "oops!" moments while you work. There are two types to suit how you like to work: a Long type, which lets you check the material width and blade width each time, and a Short type, for getting started right away. Choose whichever feels right, and enjoy a safer, more relaxed time with your craft.

After plenty of testing, we found that up to about five razor blades is the sweet spot for cutting smoothly and steadily with one hand. Beyond that, friction rises sharply and it takes noticeably more force. So if you'd prefer a lighter touch — or you're not too sure about your strength — we'd suggest working one-handed with just two or three blades. Based on this, the tool comes with five razor blades as standard. It's the balance we settled on so that as many people as possible can enjoy both a clean cut and easy handling.

The "blank piece" that brings out the tool's full accuracy is fitted into the body from the start. Its role is to keep everything firm and stable when you're not using a razor blade. If you fixed the spacers without it, a tiny gap would form and the spacers couldn't do their job properly — and that's what leads to ragged edges or bits left uncut on fine PP band. To prevent this, we pair the blank piece with double-sided tape to fill that gap completely. The result is far steadier fixing, a sharp cut, and a beautifully straight finish.

The Filamenta-Slit is like a blank canvas, full of possibility. We deliberately gave it only the most essential, pared-back functions — because we believe its real power, and the most interesting ways to use it, are yours to discover. Even the finest tool truly comes alive through the ideas and ingenuity of the person using it. So please, find your own way of working with the Filamenta-Slit. We can't wait to see where your imagination takes it.

A note for anyone who'd like to do most of their cutting freehand, holding the tool in hand. While filming a cutting video before launch, we noticed an important safety point. Even when you fix the spacer and the included double-edged razor blade with double-sided tape, if the setup isn't quite perfect the blade edge can poke out slightly from the underside — and we'd hate for that to nick your finger. So here's a simple way to stay safer: instead of the included double-edged razor, please prepare a single-edged razor of your own. A single-edged blade has a flat, non-cutting side, so even if it slips out underneath, it helps prevent injury. If you plan to use the tool freehand a lot, we'd gently suggest getting a single-edged razor ready first, for safe and relaxed crafting. We're cheering you on!

It was made to answer a simple wish: "I want to make things more neatly, and more easily." In fine handcraft, the tiniest misalignment can change the whole finish. Unlike the rough, "divide into equal parts" approach of other products, the Filamenta-Slit lets you cut accurately without relying on intuition or special technique. Just set it up beforehand, and anyone can cut precisely to the millimeter — trimming your working time considerably. Use it to make your hobby time more enjoyable, and to bring your finished pieces to a whole new level.

The price reflects the special quality that supports your dedication to your work. To achieve a unique design tailored to delicate work — something you won't find off the shelf — we use a high-performance 3D printer and make the most of its capabilities. This lets us create a tool with real precision and durability. Even for a hobby tool, we care about dependable quality you can keep using for years. We hope you'll see the price as a reflection of the care we put into countless prototypes, and of the value of spending less time on fiddly handwork so you can focus on creating.

Each tool is made right here, with care, straight from our own 3D printer. We handle everything in-house — planning, design, and production — which means we can quickly turn your "I wish this part were just a little different…" ideas into something real. Every piece is made carefully and with heart, so it works its very best in your hands. That can mean delivery takes a little longer, but the attentive, personal support you won't get from mass production is one of our strengths.

• The key is how you pull: leave plenty of length on the material, then grip it firmly with needle-nose pliers and draw it through. This helps you overcome the friction for a smoother cut.
• Strengthen the hold: if you're trying more blades, swapping the ABS-resin bolts and nuts for metal ones should make the fixing more secure.
• Anchor the tool: fixing it to a table lets you use both hands to pull the material steadily, for a smoother, more stable cut.