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Drilling large hole over small hole or vice-versa

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Forum topic by niki posted 05-21-2007 11:25 PM 2491 views 1 time favorited 4 replies Add to Favorites Watch
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niki

426 posts in 2827 days


05-21-2007 11:25 PM

Good day

Usually, when we want to drill small hole and large hole at the same center, we start with the large hole and using the center dot, we drill the small hole.

But, I like to prepare a bunch of “wheels”, cut with the “Hole saw” that has 1/4” drill, to use as knobs for jigs.

I don’t know if the small hole will be 1/4”, maybe I shall have to enlarge it to 5/16” or 3/8” and also, I don’t know what will be the diameter of the large hole for the bolt head, washer or T-nut.

Another problem is that, sometimes one drill is longer that the other and I have to change the table height that is very difficult to return to the same “center” position on my cheap Drill stand.

So, that’s what I did…

Regards
niki

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4 replies so far

View Karson's profile

Karson

34912 posts in 3147 days


#1 posted 05-22-2007 01:25 AM

Great trick Niki.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware karson_morrison@bigfoot.com †

View David's profile

David

1970 posts in 2886 days


#2 posted 05-22-2007 08:25 AM

Niki -

I just love your engineering skills! You always have very interesting posts. This is a neat trick to keep in mind for future projects.

-- http://foldingrule.blogspot.com

View niki's profile

niki

426 posts in 2827 days


#3 posted 05-22-2007 09:29 AM

Thank you

David
“Engineering skills”??? no way, just necessity.
BTW, I downloaded your “Workshop” (for 15 min) just to get the nasty massage that “Can not play this file”.
Well, You cannot expect so much from Windows 98…

niki

View WayneC's profile

WayneC

12302 posts in 2844 days


#4 posted 05-23-2007 08:10 AM

Hmmmm. How to adapt this to my new (used) radial drill press.

Thanks for sharing.

-- We must guard our enthusiasm as we would our life - James Krenov

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