Re: How small can a plasma torch get?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Ron Ginger <ronginger@...>
wrote:

>
> For years Ive wanted a laser to cut parts for model engines, but

to cut

> metal I realize the laser power is too high and the prices way out

of my

> range.
>
> But maybe a plasma cutter could do it- are there plasma torches

that

> will cut real small parts? Could I cut something like a model

locomotive

> frame, maybe 1" wide by 10" long, with a variety of cutouts?
>
> Ive already built a CNC router for wood and plastic, and have a

CNC mill

> for oterh parts, but cutting sheet metal with a plasma CNC would

be cool.

>
> ron ginger
>

Hi Ginger,
I've built a plasma cutter last year 1,5 x 3m(meters), after
talking with a hiperterm sales person he told me that there is a tip
just for thin material good up to 1,5mm. I did not try it.
You can do details as small as 3mm,on the machine I've built.
You'll need a torch hight controller, got mine from rutex, or thin
staff will warp so much that the tip will hit the material and when
that happens the torch starts shooting to the sides.
You can also use water when cutting to minimize warp.
I don't think you can get better than 2mm details.
small holes are a pain to do below 6mm ID.
I would say it's good just for rough cuts than finish with the
mill.
It can save a lot time doing this way.
I've being thinking about a water jet, cuts about anything, cheaper
the laser but slower and with the advance in software and pumps I
think it's the way to go.( how about those beautiful granite
medalion up to 2" thick or more)

Fogassa