At 06:41 AM 11/3/2002, Clive Smith wrote:
>indicate. The Dremels being variable and Rotozip having Off, 25000 and 33000
>switch positions.

I would not want to be restricted to two speeds, especially two such high
speeds (for general-purpose work, not for Roto Zip-specific jobs).  Most
Dremel bits (probably not burs, but stones etc) are rated for max 30,000
rpm, and some for only around 10,000 (wire wheels for example).  OTOH the
Dremel is simply unsuited for large work.  It can do Roto Zip work with the
$30 attachment, but slowly, not a proper substitute for the real thing
(note that the *primary* Roto Zip use is making plunge cuts through
wallboard for electrical outlets and similar -- the bit has a non-cutting
pilot area at the tip so you can run the tool around an installed junction
box and cut a precise hole.  Other bits cut clear to the end, and there are
carbide ones for plaster, tile and such).

For non-construction work I'd be inclined to go with a Dremel and a die
grinder (air or electric) that can take 1/4" shanks.  The die grinder would
make fast work of stuff that the Dremel couldn't do, and would simply laugh
at work the Dremel struggles with.  On a similar note, I've seen a review
where a guy (jeweler or similar) who was used to a half-horsepower
handpiece that hung on the wall, with a foot pedal for speed control,
thought the Dremel was a bit lame.  Of course his rig probably cost $300...

For its primary purpose in construction, I think the Roto Zip is
undoubtedly best.  I hope never to need one on that basis.

But I wouldn't kick any of them out of bed!  While you're handing out stuff
I'd like one each of everything that Messrs. Myford make... <g>

david

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"