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Plugging away! I use a lot of wooden plugs in some of the work that I do. This simple depth gauge makes counter boring to the right depth easy and is kind to your work piece. Drill vertically through a softwood block and cut the block to the correct length. Obviously the length of the drill bit sticking out will be the depth of the hole!

I mostly use 8mm (5/16") and 10mm (3/8") plugs and use brad point drill bits that I grind myself from standard HSS drill bits.

The photos should be self explanatory, but please shout if you have any questions.

Hope this can be of use to someone!

Gallery

Comments

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1,403 Posts
Simple but useful. I like it.

Any secrets or tips for making brad points from standard bits?
 

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4 Posts
Good idea.

I am also interested in making the brad point bits.

Thanks
 

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Easier to do than to explain! First, practise freehand sharpening standard drill bits on the bench grinder. Look at the geometry of the tip, 2 angles involved. Heck, I need to make a pencil sketch now!

Study that last photo. Remember that the cutting angle slopes back from the cutting edge. Does this make any sense?
 

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Cool idea… I have been working on a desktop and don't have any countersink bits. Have always just used a larger drill bit then sanded it clean. Great solution!
 

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Simple yet effective. That's a great tip.
 

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Brilliant!! The pictures speak for itself. And we all have scrap wood lying around.
 

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Very clever my dear Div,
Yes we use this trick also in Denmark, and if you remember to rest the depth gauge on the wood before drilling, you will have no tear out. (I'm sure you do so).
Best thoughts,
brother Mads
 

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yep one of those small tricks you learn in the DIY trade…lol
and clever of you to reuse hss bits that way but I think I hold me to buy them instead
even thow they ain´t as cheap as hss bits

take care
Dennis
 

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I like the idea… I have excessive number of HSS bits… ought to try making brad point from one of them.
 

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"Study that last photo. Remember that the cutting angle slopes back from the cutting edge. Does this make any sense?"

I think I got it. I'll know more when I actually give it a try.
 

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Friend swirt, maybe this helps:
First you hold the bit against the grinder wheel at the correct angle looking down at it. Then, while grinding and with the bit resting on you finger, you pivot the back down some while maintaining the angle. This grinds the "sloping" angle at the same time.
Let me know if you don't come right. I would really like to help you. Once you get the hang of it, it is so easy to sharpen drill bits yourself without any fancy gizmo.
 

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Nice depth gauge Div!!

I normally use duct tape around the bit… but after successive drilling the tape just gets pushed up the bit further and further, and then it's not really a depth gauge at all is it? ;) heheh

i think i'll be applying your technique in the near future :)
 

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Nice depth gauge. And you even chamfered all edges! In my shop I spare all bits and pieces of small scraps that I keep in a drawer close to my workbench. When needed I pick the size well suited, trim it if needed and drill through to make a quick depth gauge. Not as fancy as yours tough, but it works! Again, it's all about sharing! Thanks for posting.



Best,

Serge

http://atelierdubricoleur.spaces.live.com
 

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Thanks Serge. Those blocks look ready to go to work! You look very organized my friend!
 
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