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post #1 of 4 (permalink) Old 07-05-2010, 08:50 PM Thread Starter
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Default Ideas: router milling jig for brass and bronze

Hey all,

Anyone used their router for milling brass and/or bronze? I can get my parts pretty close size/shape-wise with my bandsaw and belt grinder. Would like to build a "simple" jig for machining the last bit... exactly. Ideas/pictures...?
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post #2 of 4 (permalink) Old 07-05-2010, 11:45 PM
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I see the issue as that of speeds: The maximum speed for peripheral miling of brass is AFAIK 350 sfm. You can increase it by 35% if you use Titanium Carbonitride coated end-mills. This would give you about 15,000 rpm for a 1/8" end-mill. Most routers go down to 8,000 rpm, so this is about the largest end-mill one could use and even then it is being pushed to the max.

For me, I do not see the practicality of such approach.
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post #3 of 4 (permalink) Old 07-06-2010, 07:47 AM
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Quote:
Originally Posted by anotherBob View Post
Hey all,

Anyone used their router for milling brass and/or bronze? I can get my parts pretty close size/shape-wise with my bandsaw and belt grinder. Would like to build a "simple" jig for machining the last bit... exactly. Ideas/pictures...?
I personally wouldn't even consider such a project, a multi-speed drill press lends itself to various ingenious modifications much simpler to those done to one of my drill presses by it's previous owner.
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post #4 of 4 (permalink) Old 07-06-2010, 08:07 AM
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Even that is tricky, as the bearings in drill presses are not designed/intended for lateral pressure.
I definitely would not use a router. CRQ expressed it perfectly. Don't do it !

Cheers

Peter
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