Re: [CAD_CAM_EDM_DRO] Re: Proxxon Mill CNC Conversion

My first "real" CNC project was converting a Proxon mill. I used a home made
router table to make the aluminum parts. So why did I buy that little mill?
It was the "right sized" project, and has got to be one of the most portable
mills around. It's got more time on it showing it off and using it to cut air
while learning CAM than it does actually making parts. The best thing about
it is the high speed, variable speed spindle. Nice and smooth. Might not be
a bad deal for just the spindle if you are making your own router table for
drilling/milling PCBs. But the travel is quite limited. Just about right for
carving wax molds for making jewlery or other small things.

But I agree with Tim that a Taig is a much better deal. I've had the Proxon,
a Sherline, a Taig, a RF-30, and a B-port series II, and the Taig is what got
used the most. I still have and use the taig and b-port. The sherline had
much nicer fit and finish, but was not quite as rugged. The taig is precise
where it needs to be, and rough around the edges where precision is not needed.
But heaver, bigger lead screws, and more travel. Sherline has more accesories
and a nicer spindle, the belt on the Taig is a bit undersized and can slip.


There are Harbor Freight type mini and micro mills out there that are worth
considering, but it appears that those are going to require a lot more fiddling
and adjusting before you can make good parts. The Seig seems good as well,
but I have no experience with them.

Have fun!

Steven Ciciora

>
>Thats a cool website you have. I like that little mill. It would be fun to

put on the desk and experiment with. I might do one of those someday. Like running
a Bridgeport all day isn't enough.

>
>My old boss was into electric flight and I dabbled in it a bit as well. He

was amazed as was I of the tiny carbon fiber helicopters not much larger than
a coffee cup that was R/C controlled. Did you build that one too?

>
>Ron
>
>Graham Stabler <eexgs@...> wrote:
>
>
>http://www.indoor.flyer.co.uk/personal.htm
>
>Covers my conversion, a digitizing probe I made for it and on it and
>a 4th and 5th axis add on I made. Also shows some other things made
>using it such as propeller moulds.
>
>The working area is more like 1.5" by 5" It is a very small mill,
>good if you want to make very small things. If you don't then a
>bigger mill will suit you better.
>
>General comments: Spindle is good, runs to over 20k and is quite
>quiet. Takes tooling upto 1/8" maximum. Construction is pretty
>good, it has gibs and the nuts have VERY little backlash. I
>recently replaced the washers that act as thrust bearings with
>normal 6mm ID bearings and that has reduced backlash to nearly
>nothing. Before if you tightend out the axial play of the screw it
>would produce too much friction.
>
>Graham
>
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site to the CCED group, as many of the same members are there, for OT subjects,
that are not allowed on the CCED list.

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