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Drill guide follow up on bits

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Forum topic by groland posted 02-11-2009 06:59 PM 919 views 0 times favorited 4 replies Add to Favorites Watch
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groland

152 posts in 2876 days


02-11-2009 06:59 PM

I posted recently on drill guides for drilling 3/4” dog holes in a 2 1/2” ash workbench top. Thanks to all who replied. Due to the suggestions I received, I think I can manage to make a decent drill guide, but the responses raised other questions about proper drill bits.

I went to The Home Depot yesterday and was happy to find an Irwin auger bit at 3/4” that the salesperson told me would work in a drill press (For making my drill guide) and in a hand held drill. Ah! Bought it. It has parallel sides of good length to work in a drill guide—or so I thought.

Then I got home and read a post from one man who said these bits were not really good for this task—wood chip clogs, burning, hard on the drill, etc. It was suggested to use a brad point bit instead. I checked various Web sites and the only 3/4” brad point bit I could find was a HSS (HHS?) bit from Rockler. Every person who had posted a “review” of these bits on their Web site indicated that they drilled holes larger than the nominal size. One gent stated that he drilled a hole for a dowel and when he inserted the dowel it fell out of the hole because the hole was too large. I certainly do not want this to be happening with my dogs!

So there is my dilemma. Comments?

Many thanks,

George Roland


4 replies so far

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Francisco Luna

939 posts in 2858 days


#1 posted 02-11-2009 07:09 PM

Woodcraft carries a line made in Germany, the brand name is “COLT”, they can be ordered online as well.

-- Nature is my manifestation of God. I go to nature every day for inspiration in the day's work. I follow in building the principles which nature has used in its domain" Frank Lloyd Wright

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groland

152 posts in 2876 days


#2 posted 02-11-2009 07:22 PM

I checked out several Web sites and could not find COLT bits larger than 1/2”??

George

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Francisco Luna

939 posts in 2858 days


#3 posted 02-11-2009 07:52 PM

Hey George,

Sorry for the incomplete info.
As this brand is from Germany, they come in metric sizes,so 3/4” would be a 19mm, here is the link:
http://www.woodcraft.com/product.aspx?ProductID=146628&FamilyID=5566
$13.99

Lee valley also carries Brad-Point Drills:
http://www.leevalley.com/wood/page.aspx?c=2&cat=1,180,42240,42261&p=42261
$15.60 in standard size.

-- Nature is my manifestation of God. I go to nature every day for inspiration in the day's work. I follow in building the principles which nature has used in its domain" Frank Lloyd Wright

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Francisco Luna

939 posts in 2858 days


#4 posted 02-11-2009 07:54 PM

HSS > > > HIGH SPEED STEEL…......Lee Valley Carries them as well, but the 3/4” one is $30.40

-- Nature is my manifestation of God. I go to nature every day for inspiration in the day's work. I follow in building the principles which nature has used in its domain" Frank Lloyd Wright

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