Drilling Mah Blades to 5 mm
Hello, I also have a Fury Tempest and completed drilling the holes to accomodate 5mm. This job can either be very easy could potentially ruin a good set of blades so be careful.
The Brass insert has more than enought material to accept drilling it to 5mm but you must drill perfectly in the center. You are not drilling out completely or removing the brass insert. I saw a post that recommended removing the insert - This is incorrect. Removing it gives a hole large than 5mm. Again the Brass insert has more than enought material for a 5mm hole.
I recommend using a drill press if you have one making sure that the blades root is sitting very flush to the drill plate. You don't want to drill off center and the press makes this very easy and fast. Please make sure the speed is set to slow. The Brass insert is installed with glue and you don't want heat build up to loosen it. If it does, no big deal, just glue it back in with Epoxy.
Important note - DRILL Bits, No one talks about the proper drill bits. I have a new standard set and could not find the proper bit.
3/16 = is the closest I could find but is slightly too small, but with a little work can get to 5mm - I don't like this idea because you need to go back and fourth and it takes time and patience.
13/64 = is a little to big for a snug fit to want
11/64 = Use this and smaller diameter bits to start off. This is an important step for an accurate hole. Start off with smaller bits
You should use 4 bits to completely this job
A Better method - I purchased Metric Bits from
I purchased a 4.5 4.8mm 4.9mm and 5.00mm 5.2 mm bits. They are cheap at only $1.85
Hope this helps