8020 Resources / what about "FESTO"

Michael Kellough said:
Bought one of these not long ago but not long enough to have tried it.
It's nominally a 20 mm hole saw made of high speed steel.
It should be able to cut the bore for the 80/20 fasteners that require a 19.4 mm hole.
How rough the result would be remains to be seen.
It won't be able to do it without help.
It's internal capacity it too shallow so a small end mill (or maybe a stubby drill bit)
would be needed to clear the center swarf so the hole saw could proceed.
Click to expand...
You can find these hole saws with much greater reach, 25 mm and more and with carbide teeth. They (carbide tipped) cut aluminum like butter, producing long continuous shavings and clean hole.
 
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