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Subject: RE: [Homebrew_PCBs] Re: Zoran's plotter

From: "Alan Marconett" <KM6VV@...>
Date: 2006-03-27

HI Zoran,

What is the size of the hole (bore) in the needle? Does this dimension
correspond to the width of line deposited? How many DPI (dots per inch)
would you say you get to lay down a trace? Your "drawing speed" divided by
200 dots/sec would probably calculate this.

Is the tapping really necessary? I read no mention of it in some simple
research on Kistka (which I'm told your process relates to).

What is the retract distance (z axis) between line segments?

Anyone interested in combining this technology with an EGG-BOT? ;>)

http://www.taomc.com/bits2bots/eggbot.htm

FULL-CIRCLE, or should I say "full egg-shaped"! ;>)


Thanks for your replies Zoran!

Alan KM6VV


> >
> > This was not explicitly explained on the website, but this is how I
> > interpreted it.
> > It looks like a small copper cup with a small heater using an smd
> > resistor. Paraffin wax is melted inside the cup. A small hollow needle
> > is attached to the cup. The needle is tapped against the board which
> > draws out some melted paraffin which solidifies. This process is
> > repeated about 200 times per second while moving the needle.
>
>
> You are right.
> Only small corrections:
> A SMD power transistor is the heater.
> The tapping is about 200 times per minute.
>
> Regards, Zoran
>