29-08-2018, 06:02 PM
I'd be careful using taps as guides. They are very hard and brittle and you really don't want one breaking off inside the hole!
Can you use 5/16 UNC bolts instead as guides? From memory they will fit although the pitch angles are different. I might have that wrong so wait till someone else confirms. I know I have definitely mixed up 1/4 Whitworth and UNC before.
Simon
Can you use 5/16 UNC bolts instead as guides? From memory they will fit although the pitch angles are different. I might have that wrong so wait till someone else confirms. I know I have definitely mixed up 1/4 Whitworth and UNC before.
Simon