Re: [CAD_CAM_EDM_DRO] CNC router build

In a message dated 4/1/2009 7:10:44 A.M. Central Daylight Time,
freshwatermodels@... writes:

I don't want to get into building a spindle so am looking for alternatives.
I am wondering if there is a die grinder or dremel type tool that has
better bearings and might be quieter than a standard router motor.<<

Jack: Google a firm by name Perske (sp?) (Germany). I haven't bought
from them in over 20 years, but they make DOZENS of kinds of spindle-motors with
hollow- and collet-shafts, etc. for use in such as X-Y machinery, also the
HF 3-Ø converter motor-generators for powering the HF versions. Sorry I don't
have contact info, but I just have had no need for their stuff in decades,
so lost contact info.

Now, if you need something "good" but just a little larger than a Dremel,
look at the "laminate-trimmer routers" in construction vendor stores such as
Home Depot, Lowe's, etc. Sadly, the Japanese makes are FAR nicer machinery and
more reliable than the usual U.S.-made "competition". But may-well be a bit
pricier for "same" item.

If the usual NOISE of a "universal motor" (the kind with "brushes" as in
routers) is too much, think on using a HF (High Frequency) 3-phase motor;
running on 400 Hz. Gets very expensive, as you have to have either a
motor-generator to produce the 400 Hz. 3-Ø power for such a spindle-motor, or, some kind
of electronic source such as a VFD. If initial cost is not a factor, go with
the HF 3-Ø. It'll last longer and drive fewer operators nuts, with loss of
hearing and tinitus! (NO LOL!) Jan Rowland


**************Feeling the pinch at the grocery store? Make dinner for $10 or
less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001)


[Non-text portions of this message have been removed]