Re: [diy_3d_printing_and_fabrication] Highest DIY XY resolution ?
- Reinis Veips wrote:
> I'm quite new to stereolitography scene but in my opinion, the limiting factorI built a laser photoplotter years ago (still use it). I put a sphere
> is not the galvos or control electronics- it's the laser optics. Most of the
> DIY printers I've seen use laser diodes which do not output a truly collimated
> beam, so even when focused, the size of point is dependant on distance the beam
> travels (so the actual focus point is moving along Z axis at different XY
> positions). However, optics is really not my area, so somebody who knows more can
> chime in.
lens (either 2 or 3 mm
diameter) right in front of the laser diode, then a pinhole in aluminum
a double-concave lens and then used a microfiche objective lens to focus
on the film.
I get a nice gaussian .001" spot (25 um) and could make it smaller
but actually defocus slightly to make the .001" raster lines merge.
· F-theta lens, 405nm, STS-0580/173, (US)$ 4733 each
Is that a lot ? Not if one is able to build large objects fast and accurate, I think.
What other expensive (new) elements a printer requires, when (re)using parts of the HP LaserJet ?
---In email@example.com, <rm@...> wrote:
Ah, was looking for that ! Tnx !
---In firstname.lastname@example.org, <grezmos@...> wrote:The lower video is fairly good:
On Sat, Nov 16, 2013 at 5:26 PM, <rm@...> wrote: