17 votes
Accepted

Enlarging a Hole made by a Hole Saw

Lee Valley (I'm sure you can get it elsewhere) sells a product called an Oops Arbor that allows you to mount two hole saws to a single arbor. The smaller one is held further out from the larger one ...
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  • 4,788
14 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

I saw a video online, that suggested a simple jig that will allow you to drill straight into a relatively flat surface. Take a piece of stock that is square. From the end of the stock, cut a wedge ...
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10 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

A drill guide will help you maintain the required angle, in your case, 90 degrees perpendicular to the desk. These are readily available at your local home improvement or tool store. Drill Guide http:...
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  • 4,788
10 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

In two words: Pilot hole If you have a drill with the handy leveling bubble, this can be handy. Otherwise line up your drill bit using something akin to a speed square or carpenters square (checking ...
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  • 1,762
9 votes
Accepted

How to keep a hole saw together?

I have not seen the type of adjustable hole saw you describe, perhaps it's a regional thing (I'm on the west coast USA), but the type I'm familiar with have a spring loaded collar with "drive pins" ...
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  • 638
8 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

I saw an ad on a woodworking site and I was reminded of this question. These were touched on in other answers but I wanted to add something more concrete with a picture as an aid. The following is a ...
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  • 20k
7 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

Just get it close to vertical, and add in a cable grommet. With these you can be about 1/8" off in the hole size, and angled like a drunken monkey drilled it, and it still looks great.
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7 votes
Accepted

How do I create a hole with a hole saw that is deeper than the tool?

You could drill as deep as the hole saw allows, then use a chisel to remove the "plug" left behind. Then drill again with the hole saw. One thing I would highly recommend anytime drilling ...
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  • 896
5 votes

Enlarging a Hole made by a Hole Saw

If you are unable to move the piece or provide additional access (as you describe), then another approach might be to cut a wood plug the same diameter as the current hole and glue it in place in the ...
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5 votes
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How can I calculate the value for a corner radius?

Your diagram I think doesn't actually clarify the situation. I want to round off the corners of a rectangle with the curve starting 3/4" away from the corner If I'm reading this correctly 3/4" is ...
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  • 59k
5 votes

Cutting a circle out of a sleeper to a certain depth

A forstner bit will result in a clean bottomed hole. Although 64mm is a slightly obscure size, you could expect a 64th of slop from a 2-1/2" bit. (Alternate choices include self-feeding bits, though ...
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4 votes
Accepted

Cutting a circle out of a sleeper to a certain depth

I was thinking about a hole saw attachment, however I do not think this will extract the wood if the depth does not exceed the total depth of the sleeper. That's correct, and in addition you could ...
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  • 59k
3 votes

Enlarging a Hole made by a Hole Saw

If you and can disassemble the piece and have a router with a rabbet bit, you can enlarge the hole by going around with depth set less than the full thickness of the material and the bearing against ...
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3 votes

How do I create a hole with a hole saw that is deeper than the tool?

Hole saw may not be the best tool for the task. A Forstner bit or something of that sort might be more appropriate. Even a spade bit might be a good choice depending on the material and the diameter ...
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  • 9,101
3 votes

How do I create a hole with a hole saw that is deeper than the tool?

One trick that will go (in this case) up to 5" is to drill as far as you can from one side, Drill a hole using the guide hole all the way through the wood, and then flip the board over using the guide ...
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  • 15k
3 votes

How can I calculate the value for a corner radius?

If you want the curve to start 3/4" away from the corner the radius of your curve is going to be 3/4". So, to make that curve with a drill bit, double the radius to get the diameter of the bit... 1-1/...
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  • 381
3 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

I think I'd try making a guide block by drilling a through-hole into a piece of thick stock at the drill press. Use the same bit you plan to drill into your desk with. Next, locate the block on the ...
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2 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

Mount a bull's eye level on the back of the drill. Requires setup once. http://ideas.selfelected.com/2011/12/laser-and-level-for-drilling-in-right-angle/
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  • 980
2 votes

How do I ensure my drill is perfectly vertical before cutting a hole in my desk?

Usually the cutting face of a hole saw is enough to give a good reference for verticality. If you're really concerned, google "portable drill guide" for some products that can help. This won't work ...
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  • 1,927
2 votes

How do I create a hole with a hole saw that is deeper than the tool?

Three other options come to mind, none are perfect although # 3 is not bad. Toolmonger.com has very deep hole saw bits. (http://toolmonger.com/2009/08/14/extra-deep-hole-saw/) But damn, these babies ...
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  • 7,824
1 vote

Enlarging a Hole made by a Hole Saw

With your 1.5" holesaw, cut a nice hole in a chunk of scrap plywood. Clamp this to the location of the old hole, and drill away. (Unless you plan to wrestle your desk to a drill press, the forstner ...
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