--- product_id: 606818939 title: "MusicNomad Diamond Safe Zone Guitar Fret Crowning File S-File Tool (MN850)" brand: "musicnomad" price: "611.54 DT" currency: TND in_stock: true category: "Music Nomad" url: https://www.desertcart.tn/products/606818939-musicnomad-diamond-safe-zone-guitar-fret-crowning-file-s-file store_origin: TN region: Tunisia --- # 240 grit premium diamond coating Ergonomic silicone grip reduces hand fatigue Patent-pending Safe Zone prevents overfiling MusicNomad Diamond Safe Zone Guitar Fret Crowning File S-File Tool (MN850) **Brand:** musicnomad **Price:** 611.54 DT **Availability:** ✅ In Stock ## Summary > 🎸 Crown your frets like a pro—no overfiling, just pure precision. ## Quick Answers - **What is this?** MusicNomad Diamond Safe Zone Guitar Fret Crowning File S-File Tool (MN850) by musicnomad - **How much does it cost?** 611.54 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/606818939-musicnomad-diamond-safe-zone-guitar-fret-crowning-file-s-file) ## Best For - musicnomad enthusiasts ## Why This Product - Trusted musicnomad brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Spot-On Crowning:** Exclusive nose design with alignment lines ensures flawless fret shaping every time. - • **Precision Perfected:** Patent-pending Safe Zone innovation stops overfiling—file, skate, and move on with confidence. - • **Speed Meets Control:** 240 grit diamonds cut in both directions, slashing your fret crowning time from weeks to hours. - • **Dual-Channel Mastery:** Two perfectly rounded channels for narrow/medium and wide/jumbo frets, tailored for every guitar style. - • **Ergonomic Powerhouse:** Heavy, offset silicone handle offers superior leverage and comfort—your hands will thank you. ## Overview The MusicNomad Diamond Safe Zone Guitar Fret Crowning File (MN850) is a premium, dual-channel diamond file designed for flawless fret crowning on all common fret sizes. Featuring a patent-pending Safe Zone to prevent overfiling, a heavy ergonomic silicone handle for comfort and leverage, and 240 grit diamonds that cut in both directions, it dramatically reduces the learning curve and speeds up fretwork. Ideal for Nickel Silver frets on acoustic, electric, bass guitars, and more, this tool is a must-have for serious guitar techs and enthusiasts aiming for professional results. ## Description Buy MusicNomad Diamond Safe Zone Guitar Fret Crowning File S-File Tool (MN850) | Crowns Guitar Frets without Over-Filing, Works on Narrow, Wide & Jumbo Frets: Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - A TRUE GAME-CHANGER: Designed by our Sonoma, CA team and in collaboration with top repair techs, the Safe Zone S-File sets a new higher standard for what you should expect when you buy a Fret Crowing File. No detail is overlooked, and it is packed with unmatched features and benefits. - WHY DID I NOT THINK OF THE SAFE ZONE?: The patent pending Safe Zone innovation prevents you from over filing. At the top of the file, there is a small strip where there are no diamonds. Once you perfectly sculpt and round both sides of the frets, the S-File stops filing and skates on top of the fret. You can hear and feel the difference and it's time to move to the next fret. It's that simple...File-Skate-Go! The premium diamonds make both fast and precision filing. Whether you are a seasoned tech or new to fret crowing it reduces the learning curve from weeks to hours. - THE PERFECT DIAMOND FILE DESIGN: The 240 grit premium diamond coating is perfectly rounded to closely match the original radius of your frets. One channel is for narrow/medium frets and the other is for wide/jumbo frets. After hearing many repair shops complain the wide side of existing files are too flat to use, we increased the roundness of our wide channel to improve the functionality. Additionally, our diamond file cuts in both directions, speeding up the process, unlike toothed files that cut in only one direction. - BIG IMPROVEMENT OVER EXISTING HANDLE DESIGNS: Our comfortable, heavy, ergonomic handle design makes such a big difference. It starts with our innovative blue silicone comfort grip that reduces hand fatigue. The offset design provides both added leverage when filing and allows you to clear the guitar body when filing over it. Weight makes a difference. We beefed up our design so the weight of the S-File does the work for you and is in a weight class by itself at .38 lbs (173g). Lastly, the fret size channel application is engraved in the handle so it won't rub off, allowing you to know the correct file size to use. We even include a convenient hang hole. - ADDITIONAL FEATURES & BENEFITS: It works amazing for crowning the most popular & widely used fret wire material, Nickel Silver, found on all Acoustic Guitars, Banjos, Ukuleles and most Electric & Bass Guitars. As with any file, using on Stainless Steel fret wire will shorten the file life. Stainless Steel is used on a small percentage of Electric and Bass Guitars. Our exclusive nose design features two lines for spot fret crowning. Position the line to be 90 degrees from the frets and you will just be filing right where the line intersects with the fret. Our high quality manufacturing process includes radiused & beveled edges along the entire perimeter. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CS12ZY7C | | Best Sellers Rank | #3,551 in Musical Instruments ( See Top 100 in Musical Instruments ) #53 in Guitar Tools | | Brand Name | MusicNomad | | Compatible Material | Metal | | Customer Reviews | 4.7 4.7 out of 5 stars (400) | | Grit Material Type | Diamond | | Grit Number | 240 | | Grit Type | 240 | | Item Dimensions | 8.75 x 1.37 x 0.17 inches | | Item Highlight | Crowns Guitar Frets without Over-Filing, Works on Narrow, Wide & Jumbo Frets | | Item Type Name | Fret Crowning File | | Item Weight | 181 g | | Manufacturer | MusicNomad | | Material Type | Stainless Steel | | Model | MN850 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | MN850 | | UPC | 850022370724 | | Unit Count | 1 Count | | Warranty Description | Limited warranty for 30 days from date of purchase music nomad will replace the product at no charge due to any defect in materials or workmanship that may occur in normal use. The warranty does not cover damage that results from abuse, misuse or accidents. To obtain warranty email us at infoatmusicnomad. Com for warranty claim instructions. | ## Product Details - **Brand:** MusicNomad - **Grit Material:** Diamond - **Grit Type:** 240 - **Item dimensions L x W x H:** 8.75 x 1.37 x 0.17 inches - **Material:** Stainless Steel ## Images ![MusicNomad Diamond Safe Zone Guitar Fret Crowning File S-File Tool (MN850) - Image 1](https://m.media-amazon.com/images/I/61xkuFjWYKL.jpg) ## Frequently Bought Together - MusicNomad MN850 Diamond Coated, Safe Zone Guitar Fret Crowning File & Luthier Tool (S-File) - MusicNomad Fret Leveler - Leveling (L-Beam) 17.6" (45cm) for Acoustic and Electric Guitars (MN811) - MusicNomad Tracers Fret Erasers 6 pc. Finishing Kit for Sanding, Buffing and Polishing after Fret Crowning, Dressing or Beveling (MN860) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/606818939-musicnomad-diamond-safe-zone-guitar-fret-crowning-file-s-file](https://www.desertcart.tn/products/606818939-musicnomad-diamond-safe-zone-guitar-fret-crowning-file-s-file) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-04*