Can I use a chisel mortise drill bit on cordless drill?


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Old 10-18-17, 07:34 AM
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Can I use a chisel mortise drill bit on cordless drill?

I usally see people use chisel mortise drill bit on a drill press but I don't have a drill press. Can I use it on a cordless drill?
 
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Old 10-18-17, 08:31 AM
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No. The bit itself has no pilot point so it will skate all over the workpiece unless it's contained inside the hollow chisel.
 
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Old 10-18-17, 08:35 AM
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I suppose with some creativity you could. The problem is there are two parts to the bit. The center part that turns is no problem and will chuck up in a cordless drill. You will need to fabricate some sort of handle for the outer part so you can push down to provide the force to chisel out the corners and to prevent it from turning.
 
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Old 10-18-17, 09:00 AM
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Are you trying to use just the bit--or the whole hollow chisel thing?

There's no way you can push a hollow chisel into wood with a hand drill. It takes tremendous force even into soft pine with a razor-sharp chisel. The drill press has the long levers, gears and solidity to give the required force.
 
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Old 10-20-17, 05:41 AM
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Thank you for the response. Yes, after watching a few YouTube videos on this chisel mortise drill, I realized that it'll be hard...even on the drill press, it loos like I will need the whole kit not just the bit. In addition, looks like chisel mortise drill bit do no produce a clean hole. The bottom is not nice and flat. Is there any power tools that will allow me to create perfect square holes?
 
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Old 10-20-17, 05:59 AM
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I'd use a sharp chisel to clean up the holes. Not sure it can be done with a power tool.
 
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Old 10-20-17, 08:19 AM
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Charlie2,
I tried the mortise attachment on a drill press but I felt like I was going to break the press.
I now have a benchtop hollow chisel mortiser and it works great. The chisel leaves the mortise sides smooth (some faint scratches that won't affect fit or strength), with square ends, but the bottom has overlapping rings lefts from the bit. That doesn't usually get seen so it's not considered an issue.

An alternative is to make a jig to use a plunge router to create the mortise. These jigs have always been a favorite project for woodworkers & there are probably hundreds of variations. One I always wanted to build mounts the router horizontally and the workpiece clamps to a table that slides on rails L/R & In/Out to create the pocket.
A router will leave a pristine pocket but will have round ends. At that point either round-over the tenon ends with a rasp or chisel, or chop the mortise ends square with a sharp chisel.
 
 

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