--- title: 5mm x 20mm Up-Spiral O-flute Router Bit description: The 5mm x 20mm Up-Spiral O-flute Router Bit is well balanced for efficient, deep cuts. The long shank and the single flute increase the stability while the comparably small diameter decreases cutting --- [Skip to content](https://support.shapertools.com/hc/en-us/articles/8900601477019-5mm-x-20mm-up-spiral-o-flute-router-bit#main-content) - [English](https://support.shapertools.com/hc/en-us/articles/8900601477019-5mm-x-20mm-up-spiral-o-flute-router-bit) - [Deutsch](https://support.shapertools.com/de/hc/de-de/articles/8900601477019-5-mm-x-20-mm-spiralnutfräser-einschneidig) - [Français](https://support.shapertools.com/fr/hc/fr-fr/articles/8900601477019-5-mm-x-20-mm-fraises-à-rainurer-hélicoïdales-à-un-seul-tranchant) English Show submenu for translations [Contact us](https://support.shapertools.com/kb-tickets/new?hsLang=en) ![Shaper-KB-Logo.svg\]](https://support.shapertools.com/hubfs/Shaper-KB-Logo.svg) Open main navigation Close main navigation - - [English](https://support.shapertools.com/hc/en-us/articles/8900601477019-5mm-x-20mm-up-spiral-o-flute-router-bit) - [Deutsch](https://support.shapertools.com/de/hc/de-de/articles/8900601477019-5-mm-x-20-mm-spiralnutfräser-einschneidig) - [Français](https://support.shapertools.com/fr/hc/fr-fr/articles/8900601477019-5-mm-x-20-mm-fraises-à-rainurer-hélicoïdales-à-un-seul-tranchant) English Show submenu for translations - [Contact us](https://support.shapertools.com/kb-tickets/new) - [Go to shapertools.com](https://www.shapertools.com/) [Go to shapertools.com](https://www.shapertools.com/) Shaper Support - There are no suggestions because the search field is empty. 1. [Help Center](https://support.shapertools.com/?hsLang=en) 2. [Accessories](https://support.shapertools.com/accessories?hsLang=en) 3. [Specialty Router Bits](https://support.shapertools.com/accessories?hsLang=en#specialty-router-bits) # 5mm x 20mm Up-Spiral O-flute Router Bit The [5mm x 20mm Up-Spiral O-flute Router Bit](https://www.shapertools.com/store/product/5-mm-x-20-mm-up-spiral-o-flute-router-bit) is well balanced for efficient, deep cuts. The long shank and the single flute increase the stability while the comparably small diameter decreases cutting pressure. This combination lets you make deep cuts in one go and save time cutting. You can make single passes up to 20 mm in many materials. ### Notes - Cleaning it from time to time will increase the service life of this bit considerably. - During deeper cuts, the bit may not be able to completely evacuate all the chips as it cuts. Make sure that you keep Origin moving during the cut to reduce the danger of burning or melting the waste material. - The cross **×** in the table below indicate that a different router bit may be more suitable to prolong the life of the bit. - All values are in mm. Plunge and Auto Speed are in mm/min. | **Material** | **Pass Type** | **Depth/Pass** | **Plunge speed** | **Auto Speed** | **Spindle Speed** | | --- | --- | --- | --- | --- | --- | | Foam | **×** | **×** | **×** | **×** | **×** | | Acrylics | **×** | **×** | **×** | **×** | **×** | | Soft Plastics | Rough | 10 | 250 | 450 - 600 | 4 - 5 | | | Finish | - | 200 | 350 - 400 | 4 - 5 | | Solid Surface (e.g. Corian) | Rough | 5 | 200 | 250 - 350 | 4 | | | Finish | - | 180 | 200 - 300 | 4 | | HPL | Rough | 5 | 200 - 300 | 450 - 550 | 5 | | | Finish | - | 180 - 250 | 300 - 400 | 5 - 6 | | MDF | Rough | 20 | 250 - 350 | 450 - 600 | 5 | | | Finish | - | 200 - 300 | 300 - 450 | 5 - 6 | | Softwood,  Plywood | Rough | 20 | 250 - 300 | 400 - 550 | 5 | | | Finish | - | 200 - 250 | 300 - 450 | 5 - 6 | | Hardwood | Rough | 18 | 250 - 300 | 400 - 550 | 5 | | | Finish | - | 180 - 250 | 300 - 420 | 5 - 6 | | Chipboard | **×** | **×** | **×** | **×** | **×** | | Non-Ferrous Metals | **×** | **×** | **×** | **×** | **×** | - 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