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Discussion Starter · #1 ·
I'm milling out a piece of aluminum with a 5/16 end mill and I need to reach a depth of 2 7/8 and my router only goes to 2 1/4 and most I see( if they even tell you the plunge depth) are 2 3/4. Any thing out there that does 3"?
Thank you.
 

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Welcome to the forum. I have not seen one that will plunge 3". Others may have...
 

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I'm milling out a piece of aluminum with a 5/16 end mill and I need to reach a depth of 2 7/8 and my router only goes to 2 1/4 and most I see( if they even tell you the plunge depth) are 2 3/4. Any thing out there that does 3"?
Thank you.
Maybe a Muscle chuck (www.musclechuck.com) could help you.
Harrisin used to recommend it.
BTW, Where is Harrisin?
 

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Hi Alexis, @papasombre ,

There have been recent updates in the Lobby regarding Harry....
 

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Maybe find someone with a milling machine like a Bridgeport, I would think unless you can slow your router down that the speed is too fast for a 5/16” end mill, especially that deep. Being a 40+ year machinist I myself would not try this, it’s unsafe.
 

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Discussion Starter · #12 ·
Maybe find someone with a milling machine like a Bridgeport, I would think unless you can slow your router down that the speed is too fast for a 5/16” end mill, especially that deep. Being a 40+ year machinist I myself would not try this, it’s unsafe.
Thanks for your input. I'm no machinist so that's helpful information.
 

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I'm milling out a piece of aluminum with a 5/16 end mill and I need to reach a depth of 2 7/8 and my router only goes to 2 1/4 and most I see( if they even tell you the plunge depth) are 2 3/4. Any thing out there that does 3"?
Thank you.
I have a collet extension for my router and it add a lot of extra depth. You should be able to get one from favorite supplier
 

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I have one ordered, just waiting for it to get here. Thanks
I went to use my collet extension (2nd time in 10 years) tonight and couldn't use it. It vibrated to the point where it was extremely unsafe. At first I thought I may not have tightened everything up correctly. After double checking I turned it back on, same thing. I took the extension off and put the bit in the routers collet and it ran fine, no vibration. Curious I put the extenion back in the collet and turned the router on and off quickly, the shaft was bent and I could easily see a big wobble. I didn't remember using the extension for a 2 ton bottle jack handle but I guess I did.

I said all that to say this... be very careful and cautious with the collet extension, everything tight, check for vibration/wobble, make a dry run, take thin cuts etc. etc.and of course have fun.
 

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Discussion Starter · #16 ·
I went to use my collet extension (2nd time in 10 years) tonight and couldn't use it. It vibrated to the point where it was extremely unsafe. At first I thought I may not have tightened everything up correctly. After double checking I turned it back on, same thing. I took the extension off and put the bit in the routers collet and it ran fine, no vibration. Curious I put the extenion back in the collet and turned the router on and off quickly, the shaft was bent and I could easily see a big wobble. I didn't remember using the extension for a 2 ton bottle jack handle but I guess I did.

I said all that to say this... be very careful and cautious with the collet extension, everything tight, check for vibration/wobble, make a dry run, take thin cuts etc. etc.and of course have fun.
Thanks for that information. Mine worked fine but the extended collet wouldn't fit in the opening of the guide block so I guess I can go ahead and use it for a pry bar.
 

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I'm milling out a piece of aluminum with a 5/16 end mill and I need to reach a depth of 2 7/8 and my router only goes to 2 1/4 and most I see( if they even tell you the plunge depth) are 2 3/4. Any thing out there that does 3"?
Thank you.
Bosch GOF 1600 CE goes up to 76 mm (3 in) plunge depth. One of the reasons I purchase a couple of them as I couldn't find other router models with a such plunge depth capability.

In the US that router model is branded with another model name but is the same stuff.

Regards.
 
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