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http://www.luthiersforum.com/forum/viewtopic.php?f=10102&t=4282&p=45597&hilit=aluminum#p45597

Hey Filippo,

Here is one I did a while back. It works great for me. I will add some microadjusting to it and will probably switch to an air micro grinder for the "router" but otherwise this thing works great! It is a little ways down the thread. I am not at home so I can't post the original pictures.

Shane

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Canada

I have built a couple and have bought a couple. I like a clear base for inlay routing so I have been using for several years the the LMI SPPMR but I belive they are discontinuing it.



I have also use in the early years the stewmac base. I actually like the adjustment on it better so I am planing after NAMM to make a replacement base for my SPPRM using the Stewmac adjustment posts and cross beam but on a clear lexan base

The base on the LMI is 3/8 thick. It is not bulky at all IMO. but is much thicker than the aluminum stewmac base but needs to be being made of Lexan to eliminate flex.

I like the ability to adjust depth in the channel or pretty much on the fly with the Stewmac adjustment. Plus I use a Foredom with the Stewmac custom hand piece and the LMI threads are not perfect 3/4"-12 thread pitch and the stewmac threads are.

Actually the flex shaft of the foredom does not influence the tool path at all if you you have the motor on a hanger above your work as you should. In fact when inlay channeling the foredom is much easier to precisely control due to the light weight on the base than a dremel or a laminate trimmer. And you will not find a cordless system with the HP you need.

John Hall's air powered die grinder. Million times better than the dremel. Or just look for an Enco mini grinder on eBay or something.