[sdiy] Frontpanel Express line detail

[julian fincham]

FPD simply states "Engraving tool - 0.2mm" but its not at all clear
what this actually meens -

Does it meen that the line should be 0.2mm, or does it meen that the
tool is 0.2mm?

And then it gets more complicated - if the tool is 0.2mm, what does
this actually meen?

Cutter geometry is not as simple as simply stating a width - the
truncation (the width across the flat on the tip of the cutter) can be
one widh, but even this wont tell you the line width, as the angle of
the truncation can change, the clearence angle can change, not to
mention the cutting angle its self.

And, once all this is done, with a V cuter, if you plunge the tool
deeper, the line is going to get thicker regardless!

In short, i have no idea what FPD meens by 0.2mm, but you are possibly
better to use any numbers as a guide rather than some absolute.





At this point, of course, i have to plug my own work -

http://www.thebeast.co.uk/cnc/

; )

Incidently i grind the cutters i use myself, and use different geomery
for different jobs/effects/finishes/metal types, to get the best
visual effect.  I find i get better end results this way, than simply
'painting by numbers'

Indeed this -

http://www.thebeast.co.uk/cnc/DSCF4271.jpg

is one of my favourite examples.

Julian






On 14 September 2010 16:06, James R. Coplin <james at ticalun.net> wrote:
> I noticed in my last panel that despite my printed proofs and having
> everything stroked correctly the lines in my panel are decidedly larger than
> what appeared on my proofs (even those printed from their design software).
> I set the project and graphics up to use the .2mm engraving tool throughout
> and all my text etc. I converted to curves, removed the fill, and stroked
> the curves to .2mm with joins and endcaps set to round to match the tool.
> Theoretically, what I was seeing in my proofs and on the screen should have
> been what Frontpanel Express delivered.  Instead, it appears to me that the
> lines are more like .3mm-.4mm in width.  Anyone else have this
> issue/observation?  My panel was black with no infill.  Does the tool have a
> taper that with infill the text might have been sharper?  Just wondering how
> to adjest before I send off my next panel as it is an expensive learning
> curve.
>
> James R. Coplin
>
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