1/12 straight router bit for cutting through mortise

[Bencuri]

I need to cut narrow through mitters into hardwood. The mitter width should be 2mm (about 1/12"), and the thickness of the wood is 4/5". I found this router bit, but I am not sure if this is suitable indeed for the purpose?:

   

I have seen people cutting wood with those kind of router bits that look similar to a normal drill bit. But I found the side of the cuts were quite rough. That's why I tried to find a normal, straight type of bit.

[fredhargis]

I don't know what a "through miter" is, but that bit is so thin I have a hard time believing you would be able to cut much with it before it breaks. The other thing you mentioned is that spiral bits (?, I guess that's what you refer to, the ones that look like a drill bit) cut rough. That's not been my experience, they are my favorite type bit when trying to plunge cut as well as many other uses.

[jteneyck]

I don't know what a "through miter" is, but that bit is so thin I have a hard time believing you would be able to cut much with it before it breaks. The other thing you mentioned is that spiral bits (?, I guess that's what you refer to, the ones that look like a drill bit) cut rough. That's not been my experience, they are my favorite type bit when trying to plunge cut as well as many other uses.

Same here.  What's a "through miter"?

John

[Bencuri]

Same here.  What's a "through miter"?

John

Sorry guys I remembered terms wrongly, I wanted to write mortise. Through mortise.

By the way, here is the procedure when they cut material with routing drillbit:

[fredhargis]

OK, well now I also understand the part about the rough cut. So, you're planning on using that bit you first asked about with a Dremel? I'd bet the only way to find out is to try it.....but I'm still thinking that bit will break.

[Bencuri]

OK, well now I also understand the part about the rough cut. So, you're planning on using that bit you first asked about with a Dremel? I'd bet the only way to find out is to try it.....but I'm still thinking that bit will break.

This is why I am asking this. I have seen these thin bits showing up occasionally, but not sure if they can stand the resistance of the wood in the situation I outlined. 

I want to use the bits with normal handheld router. I just linked the video above with the Dremmel because that is the video where I found relatively thin bits used. However I have a Dremmel, too, so I could go that way as well, buying the routing attachment and the drill bit, and cut the mortise. The only thing why I did not go that way is that rough cut that you can see. It is not the edge I got used to when routing. So I am looking at other options, too.

[OneStaple]

I have a 1/8" (~3mm) router bit, but the cutting length is significantly shorter. Maybe 1/2"? A 2mm diameter and almost an inch of cutting length would make me nervous about shattering/exploding while cutting.

Also, at least on the one you show a picture of, it's a non-standard shank diameter for a handheld router collet. Looks like it's meant for a CNC. So it might not fit your router anyway.

What's the width of the mortice you're trying to cut? A 2mm wide mortice would be unusually narrow, especially for the depth you state.

Tyler

[Bencuri]

I have a 1/8" (~3mm) router bit, but the cutting length is significantly shorter. Maybe 1/2"? A 2mm diameter and almost an inch of cutting length would make me nervous about shattering/exploding while cutting.

Also, at least on the one you show a picture of, it's a non-standard shank diameter for a handheld router collet. Looks like it's meant for a CNC. So it might not fit your router anyway.

What's the width of the mortice you're trying to cut? A 2mm wide mortice would be unusually narrow, especially for the depth you state.

Tyler

The mortise has to be 2mm.

[Brian in sunny FL]

Only bit that may be 2mm and cut through 5/4 would be high-speed steel.  I am sure a carbide bit would snap.  Small diameter bits are popular in dental and PCB manufacturing but not that long.

[BrentDH]

If I understand everything correctly, you want a 2mm wide mortise through material that is 4/5” thick and you want to cut it with a handheld router.  This seems unlikely to be successful to me. Can you take a completely different approach?  Rip the material at one edge of the mortise.  Then cut a dado 2mm deep and however wide your mortise was to be.  And then glue it back together.