# Redline Spindle FAQs **URL:** https://forum.onefinitycnc.com/c/onefinity-spindle-kit-by-redline-cnc/redline-faqs/176.md [Latest](https://forum.onefinitycnc.com/latest.md) · [Categories](https://forum.onefinitycnc.com/categories.md) --- ## [About the Redline Spindle FAQs category](https://forum.onefinitycnc.com/t/about-the-redline-spindle-faqs-category/34256)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [July 1, 2025, 9:02pm UTC](https://forum.onefinitycnc.com/t/about-the-redline-spindle-faqs-category/34256 "2025-07-01T21:02:29Z")
This area includes FAQs directly from Redline CNC. --- ## [Redline Spindle Technical Bulletin VFD Over-Voltage Fault 4/29/26 (all Spindles shipping after 4/29/26 are not affected!)](https://forum.onefinitycnc.com/t/redline-spindle-technical-bulletin-vfd-over-voltage-fault-4-29-26-all-spindles-shipping-after-4-29-26-are-not-affected/38568)
**Author:** [@Redlinecnc](https://forum.onefinitycnc.com/u/Redlinecnc)\ **Replies:** 1\ **Last updated:** [November 9, 2026, 7:58pm UTC](https://forum.onefinitycnc.com/t/redline-spindle-technical-bulletin-vfd-over-voltage-fault-4-29-26-all-spindles-shipping-after-4-29-26-are-not-affected/38568 "2026-11-09T19:58:38Z")
\*\*\*UPDATE\*\*\* THIS ISSUE HAS BEEN RESOLVED ANY 220V SPINDLE KIT PURCHASED AFTER APRIL 26,2026 HAS BEEN CORRECTED IN PRODUCTION PRIOR TO SHIPPING. Redline Spindle Technical Bulletin VFD Over-Voltage Fault 4/29/26 Redline… --- ## [How to Address a Redline Spindle Communication Error and Error 14 (FAQ)](https://forum.onefinitycnc.com/t/how-to-address-a-redline-spindle-communication-error-and-error-14-faq/38026)
**Author:** [@Redlinecnc](https://forum.onefinitycnc.com/u/Redlinecnc)\ **Replies:** 0\ **Last updated:** [March 30, 2026, 3:38pm UTC](https://forum.onefinitycnc.com/t/how-to-address-a-redline-spindle-communication-error-and-error-14-faq/38026 "2026-03-30T15:38:34Z")
How to Address a Redline Spindle Communication Error and Error 14 (FAQ) --- ## [Onefinity Spindle Kit by Redline CNC | Redline/Realtime Controller Installation Video](https://forum.onefinitycnc.com/t/onefinity-spindle-kit-by-redline-cnc-redline-realtime-controller-installation-video/37921)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 8:56pm UTC](https://forum.onefinitycnc.com/t/onefinity-spindle-kit-by-redline-cnc-redline-realtime-controller-installation-video/37921 "2026-03-18T20:56:26Z")
--- ## [Redline CNC Spindle Squealing? (Redline Official FAQ)](https://forum.onefinitycnc.com/t/redline-cnc-spindle-squealing-redline-official-faq/37722)
**Author:** [@Redlinecnc](https://forum.onefinitycnc.com/u/Redlinecnc)\ **Replies:** 0\ **Last updated:** [March 3, 2026, 4:23pm UTC](https://forum.onefinitycnc.com/t/redline-cnc-spindle-squealing-redline-official-faq/37722 "2026-03-03T16:23:03Z")
Why Your Spindle Squeals — And What To Do About It A squealing spindle can be alarming, but in most cases it’s not a catastrophic failure — it’s a warning sign. Understanding why it happens and how to respond can dramat… --- ## [Change to Spindle Warm-Up Procedure (2/13/26)](https://forum.onefinitycnc.com/t/change-to-spindle-warm-up-procedure-2-13-26/37449)
**Author:** [@Redlinecnc](https://forum.onefinitycnc.com/u/Redlinecnc)\ **Replies:** 0\ **Last updated:** [February 13, 2026, 3:46pm UTC](https://forum.onefinitycnc.com/t/change-to-spindle-warm-up-procedure-2-13-26/37449 "2026-02-13T15:46:30Z")
Updated 2/13/26 Purpose of This Bulletin: Following extensive customer feedback and an internal review of spindle warm‑up methodologies, we have identified a more effective procedure specifically tailored for spindles … --- ## [What height should the Spindle be in the Spindle Mount? (FAQ)](https://forum.onefinitycnc.com/t/what-height-should-the-spindle-be-in-the-spindle-mount-faq/37080)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [January 4, 2026, 10:59pm UTC](https://forum.onefinitycnc.com/t/what-height-should-the-spindle-be-in-the-spindle-mount-faq/37080 "2026-01-04T22:59:12Z")
Short answer There is no single fixed measurement. The correct height depends on your spoilboard thickness, tooling, dust boot, and accessories. Recommended starting point Set the spindle so that with the Z-axis fully … --- ## [Makita Router vs a Spindle FAQ](https://forum.onefinitycnc.com/t/makita-router-vs-a-spindle-faq/10870)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [February 2, 2022, 4:35pm UTC](https://forum.onefinitycnc.com/t/makita-router-vs-a-spindle-faq/10870 "2022-02-02T16:35:52Z")
This FAQ is directed at new users to cnc routers. Often, we get asked, which should I get, the Makita router or a spindle? This faq is designed to help answer that question for you. Each individual can come to a differ… --- ## [What spindle should I buy? A FAQ by Onefinity](https://forum.onefinitycnc.com/t/what-spindle-should-i-buy-a-faq-by-onefinity/23839)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [December 5, 2023, 4:04pm UTC](https://forum.onefinitycnc.com/t/what-spindle-should-i-buy-a-faq-by-onefinity/23839 "2023-12-05T16:04:24Z")
What Spindle/VFD/ATC should I buy for my Onefinity? Onefinity CNC only officially supports the use of Onefinity CNC Spindle kit by Redline CNC. Shop now: Blog Post Technical Support and Warranty One important point… --- ## [Changing the Brushes in the Makita RT0701C Trim Router](https://forum.onefinitycnc.com/t/changing-the-brushes-in-the-makita-rt0701c-trim-router/14441)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [August 1, 2022, 5:35pm UTC](https://forum.onefinitycnc.com/t/changing-the-brushes-in-the-makita-rt0701c-trim-router/14441 "2022-08-01T17:35:26Z")
If you are experiencing reduced performance, a burning smell, smoke, sparking, or inconsistent or no power, it’s time to change the brushes. Brushes are a consumable part that need to be changed depending …