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Author Topic: RPM setting, Festool 20 and 35mm router bits  (Read 827 times)

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Offline tarpon2007

  • Posts: 7
RPM setting, Festool 20 and 35mm router bits
« on: August 01, 2017, 02:38 PM »
I have the Festool 1400 router and have purchased Festool 20 and 35mm router bits. What is the recommended RPM for these bits? I will be routing holes in hardwood, Baltic birch ply and MDF. Given the bits diameter and design (like a modified Forstner drill bit) and their 8mm shank size, I am inclined to run them at minimum RPM e.g. 10,000. Thank you.

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Offline Ntex

  • Posts: 8
Re: RPM setting, Festool 20 and 35mm router bits
« Reply #1 on: August 02, 2017, 04:58 PM »
I don't know what the actual RPM is, but when I bore holes for hinges using the OF-1400 with a 35 mm bit I put the speed setting on 1. No burn marks in poplar or maple hardwoods or plywood.

Try it and see on some scrap first.

Offline Frank-Jan

  • Posts: 955
  • Dutch Canadian living in Belgium
Re: RPM setting, Festool 20 and 35mm router bits
« Reply #2 on: August 02, 2017, 05:34 PM »
The maximum rpm is printed on the shaft. (There is also a line with an arrow with the length that should at least go into the collar)

Offline tarpon2007

  • Posts: 7
Re: RPM setting, Festool 20 and 35mm router bits
« Reply #3 on: August 03, 2017, 03:20 PM »
Both the 20mm (~3/4") and the 35mm (~1-3/8") bits are marked on their shanks with a maximum RPM of 27000.... Based on prior experience, I think this is way too high an RPM for bits of this diameter. What does Festool recommend for these bits for the best quality cut? I know if I were to spin them at 27000, I'd wear thick gloves, a full face shield and safety glasses....
I tried both bits out on cherry (notoriously burn prone) at the lowest speed on the 1400 router of setting 1 on the speed dial (~10000 RPM) and the cut was clean, quick and without burning.