How to match a drill to thread tap size

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good is Rob here again well today I'm

going to do a your video for the newbies

and it's a surprising it's a subject

that doesn't seem to be dealt with on

the YouTube and it's pretty simple and

we're basically going to show how you

match drills drill size to cat's eyes


pretty simple really I mean you can get

a tap thread shot off the internet or

anywhere they're all in the place and

they are technically correct that for

the given size tap thread they list the

drill that you should be using to drill

the hole to put the pick up the tap you

know thread into technically their hope

is incorrect but they're not actually

always going to be as good as your hope

for when you do the job because there

are a number of variables in cutting

threads from start how do you know the