---
product_id: 289057990
title: "LMT Onsrud 63-610 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 22 Degree Helix, 1 Flute, 2.0000\" Overall Length, 0.1250\" Cutting Diameter, 0.2500\" Shank Diameter"
brand: "lmt onsrud"
price: "S$222"
currency: SGD
in_stock: false
reviews_count: 5
category: "Lmt Onsrud"
url: https://www.desertcart.sg/products/289057990-lmt-onsrud-63-610-solid-carbide-upcut-spiral-o-flute
store_origin: SG
region: Singapore
---

# 2.000" length & 0.125" cutting diameter 22° helix for efficient chip evacuation Solid carbide for max durability LMT Onsrud 63-610 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 22 Degree Helix, 1 Flute, 2.0000" Overall Length, 0.1250" Cutting Diameter, 0.2500" Shank Diameter

**Brand:** lmt onsrud
**Price:** S$222
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Cut faster, last longer — the carbide edge pros trust!

## Quick Answers

- **What is this?** LMT Onsrud 63-610 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 22 Degree Helix, 1 Flute, 2.0000" Overall Length, 0.1250" Cutting Diameter, 0.2500" Shank Diameter by lmt onsrud
- **How much does it cost?** S$222 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/289057990-lmt-onsrud-63-610-solid-carbide-upcut-spiral-o-flute)

## Best For

- lmt onsrud enthusiasts

## Why This Product

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

## Key Features

- • **Unmatched Durability:** Solid carbide construction delivers extended tool life and faster cutting speeds, perfect for high-demand CNC machining.
- • **Optimized for Aluminum:** Specifically engineered for high-speed milling of aluminum sheets and blocks, enabling flawless, chatter-free performance.
- • **Precision Chip Control:** 22° helix upcut spiral design efficiently evacuates chips, reducing clogging and ensuring smooth, consistent cuts.
- • **Single Flute Efficiency:** One flute design maximizes chip clearance and reduces heat buildup, ideal for high-speed CNC routers and machining centers.
- • **Versatile Compatibility:** Standard 0.250" round shank fits a wide range of toolholding systems for seamless integration into your workflow.

## Overview

The LMT Onsrud 63-610 is a solid carbide, uncoated upcut spiral cutting tool with a 22° helix and single flute, designed for high-speed CNC machining of aluminum. Featuring a 2" overall length and 0.125" cutting diameter with a 0.250" round shank, it offers superior durability, efficient chip evacuation, and broad toolholding compatibility, making it a top choice for precision aluminum cutting.

## Description

High speed cutters for machining aluminum sheet and block material. These tools are optimized for use on high-speed CNC mills, high speed machining centers and CNC routers. Use for aluminum plate and single/multi sheet aluminum.

Review: Performs great
Review: I just finished making some parts for my 3d printer out of aluminum and it was flawless. Went extra slow to see what it could do. I started with contours at 50mm a min, then went to 100mm a min with no problems. Plunging for holes went at 40mm a min with no chatter at all. was very impressed with this bit. will have to get some more for different cuts

## Features

- Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction right-hand cut spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Single flute, 22 degree angle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001VY3664 |
| Item model number | 63-610 |
| Manufacturer | LMT Onsrud |
| Product Dimensions | 5.08 x 0.64 x 0.1 cm; 23 g |

## Product Details

- **Brand:** LMT Onsrud
- **Cut type:** Center Cutting
- **Finish type:** Unfinished
- **Material:** Carbide
- **Number of flutes:** 1

## Images

![LMT Onsrud 63-610 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 22 Degree Helix, 1 Flute, 2.0000" Overall Length, 0.1250" Cutting Diameter, 0.2500" Shank Diameter - Image 1](https://m.media-amazon.com/images/I/31OUm-QE7fL.jpg)
![LMT Onsrud 63-610 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 22 Degree Helix, 1 Flute, 2.0000" Overall Length, 0.1250" Cutting Diameter, 0.2500" Shank Diameter - Image 2](https://m.media-amazon.com/images/I/61pJG1ORkkL.jpg)

## Questions & Answers

**Q: Can this cut .080 or thinner alumin sheets cleanly? is lubrication needed? looking for an aluminum cutting bit and new to cnc.**
A: Yes cuts very cleanly. Take depth of cuts that are between 1 to 4/1000 of an inch and keep your feed rate slow and RPMs high - between 12000 to 16000RPM. If the RPM setting is too slow the bit will over heat and break. If the feed rate and depth of cut are to fast it will impose too much stress on the bit and it will break. Take very gentle passes but have high RPM settings. You will have to optimize for your machine, but the aforementioned rules are a good guide. Cutting fluid is not necessary.

**Q: What is the cutting condition for aluminum sheet?**
A: I use this bit in my small CNC machine (DeWalt 611 router based) to work aluminum.  I use a horizontal feed rate of 500 and a vertical feed rate of 100.  Step over of 1mm and step down of 0.333mm.  I can use more aggressive settings but these setting help promote longer tool life.  I also use a mist coolant lubrication spray system.  The result is a mirror like cut on aluminum plate up to 12.7mm (1/2") thick.

**Q: Confirm this is a 1/4" shank size bit?**
A: Yes, the shank size is 1/4".

**Q: Hi, what is the recommended speed and feed for this when cutting 1/8" aluminum?**
A: You have to use setting 5 on dewalt or makita 1.25HP routers. This is between 12000 to 16000RPM. The feed rate should be slow(<50 feet/min) and depth of cut should be between 1 to 4/1000 of an inch anything bigger will risk breaking the bit, also your design should be smooth and not impose too much vibration on the bit when cutting. Cuts very clean but can break very easily. If you are doing a large production run be sure to have spares.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***Y on 9 November 2023*

Performs great

### ⭐⭐⭐⭐⭐ Review
*by J***N on 23 May 2020*

I just finished making some parts for my 3d printer out of aluminum and it was flawless. Went extra slow to see what it could do. I started with contours at 50mm a min, then went to 100mm a min with no problems. Plunging for holes went at 40mm a min with no chatter at all. was very impressed with this bit. will have to get some more for different cuts

### ⭐⭐⭐ Review
*by Y***R on 4 August 2022*

It done a nice cut on 3mm ACP, I tried a 30mm test cut and it came out beautiful. Then I ran a gcode test pattern and broke the bit about 15mm in the cut. I was trying a new gcode sender at the same time, which may have been my mistake, not the bits fault. Pretty sure I was at same speed as test cut though. Debating if I should try ordering again, but pretty expensive at that rate. Will be $100cdn down the drain if it is so brittle.

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-29*