Hi Viktor, did you use this one for ceramic slurry? Was thinking about building this for my first tests. My question is, where do you attach it to the reprap. It looks really high, is it stable when printing or do you use it on a McWire type of machine?
for ceramic slurry i used another setup with thicker needles (coded green) - but they clogged occasionally after some minutes, so i mixed my own slurries with glass- or ceramic-dust and glycerin or waterglass as paste-basis.
Recently i've got some samples of hollow borosilicate glass-spheres in dispersion smaller 0,1mm size (peak at 0,05mm, range from 0,0001 to 0,1mm) what's an interesting fabbing material because of the better fluidity of the spheres in respect to the sharp-edged microparticles of ceramic dust.
The actual dispenser is fixed beside my mill-head on the CNC-mill - i posted some images in the german forum, but the posts are truncated and the (embedded) images are gone too.
Genau! Think I can forget the idea of mounting that on a BfB Reprap... I'm not a mechanical guy but wouldnt a linear stepper require less space albeit being more expensive. Maybe the pressure generated would be less than this setup? Sad because I love this simple design.
I'll look into the original one that Sid posted. Is there an crew working on a 'standardised' syringe design? Syringe is referenced all over the wiki but it seems abandoned in favor of the thermoplast extruder way back.
Edited 1 time(s). Last edit at 02/26/2009 03:03PM by unfold.
if you take a close look, the one I found in the blogs and the one viktor made is technically the same, Viktor just has the necessary plate to mount the motor and syringe to. That's mainly all the difference.
And if I got nophead right th one who actually posted the picture I quoted above hasn't been here for a while, so I guess there is no other actually working on a syringe based extruder other than viktor.
... atached are all my dispensers and cartouches in one image.
The pneumatic dispensers (two with the small black boxes and the bigger one with fixature for the CNC-Z-axis) were used for dispensing solder-paste or glue ... they can be used for fabbing too, but the big one is tricky to handle because of the big volume - i have to apply a vacuum-shot when stopping ...
-Sebastien, RepRap.org library gnome.
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Your dispenser stuff looks quite nice. Do you think you could build me one of these? Iam not very familiar with mechanics and build technical stuff...so it would be a real challenge for me to do it on my one...What I would need is a dispenser for normal viscosity (water) which could dispense drops with volume between 15-50µl...
So another try to write something into the forum
Iam from Austria and you?
Mmmh no I dont have a linear drive, but most of the other stuff. Well I will try but if it lack could you do me one of these. I wonder if its possible to print some of the parts...
Ja danke für den Link, Spritzen und Kolben hab ich schon. Das Volumen für die Spritze ist maximal 5mlheld, also alles recht klein. Ich muss die Pumpe a bissal anderst bauen. Sollt ichs nicht hinbekommen würd ich mich gern nochmal bei dir melden. Ist das ok für dich?