---
product_id: 654605055
title: "Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G"
brand: "mrcm"
price: "AR$1859643"
currency: ARS
in_stock: true
reviews_count: 13
category: "Mrcm"
url: https://www.desertcart.com.ar/products/654605055-drill-bits-sharpener-3-20mm-grinding-machine-lip-relief-angle
store_origin: AR
region: Argentina
---

# High-speed 4800 RPM motor Fits drill bits 3-20mm diameter Precision angle adjustment 95°-135° Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G

**Brand:** mrcm
**Price:** AR$1859643
**Availability:** ✅ In Stock

## Summary

> 🔧 Sharpen smarter, drill sharper — never settle for dull again!

## Quick Answers

- **What is this?** Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G by mrcm
- **How much does it cost?** AR$1859643 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/654605055-drill-bits-sharpener-3-20mm-grinding-machine-lip-relief-angle)

## Best For

- mrcm enthusiasts

## Why This Product

- Trusted mrcm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Portable & User-Friendly:** Compact design with easy collet changes—perfect for workshops, garages, or on-the-go DIY pros.
- • **Robust CBN Grinding Wheel:** Engineered for high-speed steel, ensuring long-lasting sharpness and superior cutting performance.
- • **Powerful & Quiet Operation:** 4800 RPM motor delivers fast, efficient sharpening with minimal noise disruption.
- • **Pinpoint Precision Sharpening:** Adjust point & lip relief angles for flawless drill bits every time.
- • **Universal Fit with 18 Collets:** Seamlessly sharpens drill bits from 3mm up to 20mm—your entire toolkit covered.

## Overview

The MR-20G Drill Bits Sharpener is a professional-grade, portable sharpening machine designed for drill bits ranging from 3 to 20mm. Featuring adjustable point angles from 95° to 135° and customizable lip relief angles, it ensures precision sharpening within 0.1mm accuracy. Equipped with 18 elastic collets and a durable CBN grinding wheel, it operates at a high-speed 4800 RPM motor for efficient, quiet performance. Ideal for workshops, factories, and DIY enthusiasts, this tool revitalizes dull drill bits quickly, extending their lifespan and improving drilling accuracy.

## Description

Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - desertcart.com

Review: This could be a one word review..... WOW! - I have never, and I mean never, been able to sharpen a drill bit free hand. Never. Any drill bit that I sharpen by hand that ends up cutting better is an accident. I've looked at drill sharpeners for decades, (really, not exaggerating) but had no interest. My dad had one of those things that you are supposed to use with a bench grinder, but it stat in a drawer and never got used by him, or the guy he got it from. I looked at the consumer units, but I couldn't get past the $160 price, and a name that made me think of one of the UHF TV station ads from Ronko back in the 70s. (wait, there's more!) But with the problem I had with a repair for a client last week caused by dull drill bits, I decided that I needed to buy one. The time lost because I scrapped out making a part cost me more than this thing did. Sure, I can buy a new cobalt drill index for under $150, but then I end up with the same bunch of dull bits in the same sizes in short order. Acrylic and materials like PEEK are surprisingly abrasive and can dull a bit very quickly. This thing is worth every penny. It works, perfectly, and I can use it any time so my drill bits can always be sharp when I need them. Keeping in mind the old adage that "Those who design things to be foolproof fail to take into account the ingenuity of fools," this thing is as close to foolproof as you get. New glasses will help with reading the small numbers on the collets, but you really are going to pick the one that fits the drill. The web diameter adjustment you make is in mm, so a small digital caliper is a good idea. Read the drill size in mm, and set the knob, set the drill bit in the collet, and off you go. The drill bit is held firmly in the chuck and collet. Once the bit is in place, it's held firmly so that there is no guessing for either the first cut, or splitting the point. Very consistent from one bit to the next. It takes less than 30 seconds to sharpen a bit. Pay attention to the setting on the "web diameter". You don't have to be super precise as you set the knob, but neither can you be way off on the diameter of the drill. I've gone through a good part of my drill index, sharpening the bits that are worn and damaged by my attempts to sharpen free hand. All are usable again. Now, the down side. Little things, but still.... No name plate, no sticker with the voltage and current draw, not UL listed. The response from the seller was that it's in the manual. I'm pretty sure it's required for to be on the device on electrical equipment in the USA. NO instructions at all on how to adjust the center of the drill, just a picture showing that it exists. It's important to have it right to get the relief angle and web diameter right. Mine wasn't set right. No warranty. As has often been said, if it isn't written down, it doesn't exist. When I queried the seller, they said 1 year - and I have a screen shot of that. But stuff happens, things fail that shouldn't, which is why warranties exist. I can't find it on the desertcart page, it's not in the manual. I'd be more comfortable if they fixed both issues. Having said that, I'm still giving it a 5 star rating because it's made well, and sharpens bits very easily and exceedingly well.
Review: Exceptional quality and performance. - High quality product that is easy to use. Rugged components that enables precise drill bit sharpening. The user manual is a little vague .

## Features

- High-precision Sharpening: MR-20G drill bits sharpener excels at sharpening point angle and lip relief angle. It features 18 elastic collets - 3,4,5,6,7,8,9,10,11,12,13, 14,15,16,17,18,19,20 suitable for ф3-ф20 diameter of drill bits. Accurate, stable, and easy to use.
- Adjustable Angle: Our drill bits sharpener provides 95° to 135° point angle adjustment, Ensure that the drilling accuracy is within 0.1mm. Moreover, you can also DIY the lip relief angle through the positioner pins, grinding 4 types of lip relief angle to meet different needs.
- Robust Grinding Wheel: The CBN grinding wheel is designed for high-speed steel materials, greatly improving grinding precision and work efficiency. Plus, we also provide a professional drill bits collet chuck for your safe operation.
- ng a powerful DC motor, our drill bit re-sharpener grinder operates with strong horsepower and torque, running at 4800PRM high speed while maintaining low noise levels.
- Revised sentence: "Versatile & Prepared for Various Tasks: This drill bit grinding and sharpening machine is specifically designed for the re-sharpening of drill bits. Whether you are working in a factory, workshop, garage, or engaged in DIY projects at home, effortlessly maintain the sharpness and readiness of your drill bits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CXL1S684 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #110,145 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Power Drill Bit Sharpeners |
| Brand | MRCM |
| Color | Yellow |
| Customer Reviews | 4.7 4.7 out of 5 stars (114) |
| Cutting Angle String | 95 Degrees |
| Cutting Diameter | 3 Millimeters |
| Date First Available | March 9, 2024 |
| Finish | Uncoated |
| Finish Type | Uncoated |
| Included Components | motor |
| Item Weight | 20.3 pounds |
| Item dimensions L x W x H | 12 x 6 x 7 inches |
| Item model number | MR-20G |
| Manufacturer | MRCM |
| Material | Alloy Steel |
| Number of Flutes | 2 |
| Number of Pieces | 13 |
| Part Number | MR-20G(RANGE:3-20MM) |
| Power Source | Ac |
| Product Dimensions | 12 x 6 x 7 inches |
| Set Name | 13 |
| Shank Type | Straight |
| Size | Large |
| Tool Flute Type | Spiral |
| Unit Count | 13.0 Count |

## Product Details

- **Cutting Angle String:** 95 Degrees
- **Cutting Diameter:** 3 Millimeters
- **Finish Type:** Uncoated
- **Material:** Alloy Steel
- **Shank Type:** Straight

## Images

![Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - Image 1](https://m.media-amazon.com/images/I/71ao9X2STaL.jpg)
![Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - Image 2](https://m.media-amazon.com/images/I/71gMooIN9GL.jpg)
![Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - Image 3](https://m.media-amazon.com/images/I/71MNIljdMwL.jpg)
![Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - Image 4](https://m.media-amazon.com/images/I/61jdgQ8lHwL.jpg)
![Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G - Image 5](https://m.media-amazon.com/images/I/61jPvGcl+7L.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This could be a one word review..... WOW!
*by A***R on February 3, 2026*

I have never, and I mean never, been able to sharpen a drill bit free hand. Never. Any drill bit that I sharpen by hand that ends up cutting better is an accident. I've looked at drill sharpeners for decades, (really, not exaggerating) but had no interest. My dad had one of those things that you are supposed to use with a bench grinder, but it stat in a drawer and never got used by him, or the guy he got it from. I looked at the consumer units, but I couldn't get past the $160 price, and a name that made me think of one of the UHF TV station ads from Ronko back in the 70s. (wait, there's more!) But with the problem I had with a repair for a client last week caused by dull drill bits, I decided that I needed to buy one. The time lost because I scrapped out making a part cost me more than this thing did. Sure, I can buy a new cobalt drill index for under $150, but then I end up with the same bunch of dull bits in the same sizes in short order. Acrylic and materials like PEEK are surprisingly abrasive and can dull a bit very quickly. This thing is worth every penny. It works, perfectly, and I can use it any time so my drill bits can always be sharp when I need them. Keeping in mind the old adage that "Those who design things to be foolproof fail to take into account the ingenuity of fools," this thing is as close to foolproof as you get. New glasses will help with reading the small numbers on the collets, but you really are going to pick the one that fits the drill. The web diameter adjustment you make is in mm, so a small digital caliper is a good idea. Read the drill size in mm, and set the knob, set the drill bit in the collet, and off you go. The drill bit is held firmly in the chuck and collet. Once the bit is in place, it's held firmly so that there is no guessing for either the first cut, or splitting the point. Very consistent from one bit to the next. It takes less than 30 seconds to sharpen a bit. Pay attention to the setting on the "web diameter". You don't have to be super precise as you set the knob, but neither can you be way off on the diameter of the drill. I've gone through a good part of my drill index, sharpening the bits that are worn and damaged by my attempts to sharpen free hand. All are usable again. Now, the down side. Little things, but still.... No name plate, no sticker with the voltage and current draw, not UL listed. The response from the seller was that it's in the manual. I'm pretty sure it's required for to be on the device on electrical equipment in the USA. NO instructions at all on how to adjust the center of the drill, just a picture showing that it exists. It's important to have it right to get the relief angle and web diameter right. Mine wasn't set right. No warranty. As has often been said, if it isn't written down, it doesn't exist. When I queried the seller, they said 1 year - and I have a screen shot of that. But stuff happens, things fail that shouldn't, which is why warranties exist. I can't find it on the Amazon page, it's not in the manual. I'd be more comfortable if they fixed both issues. Having said that, I'm still giving it a 5 star rating because it's made well, and sharpens bits very easily and exceedingly well.

### ⭐⭐⭐⭐⭐ Exceptional quality and performance.
*by J***N on January 5, 2026*

High quality product that is easy to use. Rugged components that enables precise drill bit sharpening. The user manual is a little vague .

### ⭐⭐⭐⭐⭐ Great value
*by W***M on January 7, 2026*

This drill bit sharpening machine is phenomenal. Worth every penny. Sharpen drills better than factory. The collets work on both metric and sae bits.

## Frequently Bought Together

- Drill Bits Sharpener, 3-20mm Grinding Machine, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 18 Collets, MR-20G
- MRCM Drill Bits Sharpener Grinding Machine Wheel(SDC OR CBN) for MR-13A、MR-13D (MR-13A/D CBN Grinding Wheel)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-20*