I have to say that unless your arc or cirlce is very small, the table saw is
the tool of choice.  The portable  high rpm type are great.  I have made
lexan router faces to use on a router table (so you can see clearly) for
years with this method.

By tilting the blade one can also get a nice beveled edge at the same time.

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Gary Tompkins
Sent: Wednesday, May 15, 2002 9:36 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: Cutting acrylic/lexan/plexiglass


I have used dish soap as a coolant and lubricant when cutting Plexiglas with
a saber saw or dremel tool. Works great and keeps your hands looking younger
too.

Gary

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Roman Black
Sent: Wednesday, May 15, 2002 9:54 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: Cutting acrylic/lexan/plexiglass


Hi Neil, ring around the local signwriters,
they almost all have CNC flatbed machines set up
for acrylic which they do all day every day.
If you take in your acrylic and a decent drawing
they can cut your shapes neat and exact in
whatever quantity you need. The operator is
usually skilled enough to whip up basic geometric
shapes in minutes, although they may ask you to
leave the job until off-peak. For a few small
pieces they'll probably charge about $10.
:o)
-Roman


Pic Dude wrote:
>
> Looking for suggestions on making smoother curved cuts in 1/8" and
> 1/4" acrylic. urrently I use a Dremel rotary tool with a Roto-zip type
> cutting bit (rotary/spiral saw bit) but get very jagged edges.
>
> Anyone know if there a better bit I could use for this?  Perhaps a
> Dremel 194 high-speed cutting bit would work better?
>
> Or is there another process I could use for this?  Scoring/snapping
> and circular saw with carbide-tipped bit are the only other processes
> I know for this, but they are just for straight cuts.

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