---
product_id: 709271101
title: "Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit"
brand: "deruilong"
price: "1495.58 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Deruilong"
url: https://www.desertcart.tn/products/709271101-deruilong-4-flat-grinding-machine-grinding-equipment-shaping-and-polishing
store_origin: TN
region: Tunisia
---

# automatic spiral water pump 9V DC power with overload protection 4-inch precision grinding disc Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit

**Brand:** deruilong
**Price:** 1495.58 DT
**Availability:** ✅ In Stock

## Summary

> 💎 Elevate your craft with precision and polish—because your gems deserve the best!

## Quick Answers

- **What is this?** Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit by deruilong
- **How much does it cost?** 1495.58 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/709271101-deruilong-4-flat-grinding-machine-grinding-equipment-shaping-and-polishing)

## Best For

- deruilong enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Power:** Stable 9V DC motor with built-in overload protection for worry-free, long-lasting use.
- • **All-in-One Accessory Kit:** Includes everything beginners and pros need to craft flawless jewelry pieces with ease.
- • **Compact & Portable Design:** Lightweight ABS plastic body (just 3 lbs) fits perfectly in any creative workspace or on-the-go kit.
- • **Versatile Gemstone Mastery:** Grind, shape, and polish glass, crystal, jasper, and synthetic stones effortlessly.
- • **Effortless Cooling & Dust Control:** Automatic spiral water pump keeps your workspace clean and your discs cool.

## Overview

The Deruilong 4” Flat Grinding Machine is a compact, multipurpose tool designed for grinding, shaping, and polishing a wide range of natural and synthetic gemstones. Powered by a safe 9V DC motor with overload protection, it features an automatic spiral water pump to cool and clean the grinding surface, ensuring smooth operation. Lightweight and portable, it comes with a comprehensive accessory kit ideal for jewelry makers at any skill level.

## Description

Buy Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit: Polishing & Buffing - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Small but mighty. And super convenient. I love it - I love this flat. Its a bit noisy and it didn't come with the 320 grit sand paper discs. But to be fair on the site it didn't say they were included, but the manual shows them being in the accessories. Its very portable and easy to change out the discs, and I really love the convenience of the recycled water feature. I would love to get this same grinder in a 6" too, otherwise I recommend this grinder for smaller stones and its great for beginners. Please view the images on the site as it has clearer instructions and a parts list. It shows the grit paste in USA terms. If this company offers extra discs for sale that would be great too.
Review: About the arbor size issue - This is a great little machine. Grinds small rocks very well. For those complaining about arbor size, just order a 5/8 to 3/8 adaptor (aka a washer). I use the disk that comes with the machine as a base, then put on the adaptor, then any type of 5/8 wheel you wanna use. I then flip the retaining nut upside down and tighten. I've cut and polished 35 cabs so far and have had great results.

## Features

- MULTIPURPOSE : The flat grinder machine is designed to grind, shape and polish glass, crystal, jasper and a wide range of natural and synthetic gemstone materials. With this versatile flat grinder, you can make necklaces, earrings, rings and other jewelry with ease
- SAFETY AND STABILITY: This flat grinding machine is powered by a 9-volt DC power supply to ensure your safety while providing stable and reliable performance. Built-in overload protection protects the machine from damage and ensures long-lasting durability
- AUTOMATIC WATER SUPPLY: The base of the grinding disc adopts the spiral pump principle, which can automatically lead water to the grinding area, effectively flushing away dust and cooling the grinding disc. The automatic water supply function makes your work smoother
- COMPACT AND CONVENIENT: This flat grinding machine is made of ABS plastic, rust-resistant and easy to clean. Measuring 198 mm × 198 mm × 180 mm(7.8 in × 7.8 in × 7 in)and weighing only 3 pounds, it is compact and lightweight, making it easy to carry and store
- PERFECT SET: The Flat Grinder comes with an accessory kit designed specifically for grinding, shaping and polishing glass and crystal. Whether you're a beginner, a professional, an artist or a hobbyist, it's perfectly suited to your grinding job, and this is an easy-to-use product and device for everyone at all levels of experience

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DPJWGPYY |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #168,525 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #173 in Jewelry Making Polishing & Buffing |
| Customer Reviews | 4.4 4.4 out of 5 stars (19) |
| Date First Available | December 4, 2024 |
| Item Package Quantity | 1 |
| Item Weight | 4.2 pounds |
| Item model number | FG01 |
| Manufacturer | Shanghai Deruilong Precision Technology Co., Ltd. |
| Package Dimensions | 9.49 x 9.41 x 9.21 inches |
| Part Number | FG01 |
| Size | 4” Flat Grinding Machine + Accessory Kit |
| Specific Uses For Product | Jewelry Making |

## Product Details

- **Brand:** Deruilong
- **Color:** Purple
- **Included Components:** entire set
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Power Source:** DC

## Images

![Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit - Image 1](https://m.media-amazon.com/images/I/61rlgzsMg+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Small but mighty. And super convenient. I love it
*by K***S on April 14, 2025*

I love this flat. Its a bit noisy and it didn't come with the 320 grit sand paper discs. But to be fair on the site it didn't say they were included, but the manual shows them being in the accessories. Its very portable and easy to change out the discs, and I really love the convenience of the recycled water feature. I would love to get this same grinder in a 6" too, otherwise I recommend this grinder for smaller stones and its great for beginners. Please view the images on the site as it has clearer instructions and a parts list. It shows the grit paste in USA terms. If this company offers extra discs for sale that would be great too.

### ⭐⭐⭐⭐⭐ About the arbor size issue
*by R***R on June 21, 2025*

This is a great little machine. Grinds small rocks very well. For those complaining about arbor size, just order a 5/8 to 3/8 adaptor (aka a washer). I use the disk that comes with the machine as a base, then put on the adaptor, then any type of 5/8 wheel you wanna use. I then flip the retaining nut upside down and tighten. I've cut and polished 35 cabs so far and have had great results.

### ⭐⭐⭐⭐ Good cheap option for flat lap. Or beginner
*by J***E on December 8, 2025*

Great cheap option for flat lap. Works great for my lapidary jewelry. They sell the disc's and bufff pads on their site. I just bought buff pads and punched 3/8holes.... washer for the 5/8 or 1/2 arbor holes I just bought at hardware store. Better than I thought it would be

## Frequently Bought Together

- Deruilong 4” Flat Grinding Machine - Grinding Equipment - Shaping and Polishing Tools, Mineral Rock Polishing Machines, Grinding Machines, Includes Rock Mineral Polishing Machine Accessory Kit
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-28*