1670RE: [diy_3d_printing_and_fabrication] Re: Greetings, and extrusion
- Feb 1, 2011The syringes pressurized by air are hard to accurately control. The rigid
syringe ought to be able to control the dripping by slightly backing up the
plunger but obviously there cannot be any slop or play in the system.
From: telmah Sent: Monday, January 31, 2011 17:01
--- <boman33@...> wrote:
>metal or other stiff material. No pipes or hoses to flex. Nozzle directly
> How about a rigid oversized syringe with the plunger CNC controlled. All
> When low, it could be automatically refilled from a side port with=====================================
> pressurized material to avoid any air pockets.
The pressurised syringe pushed by a linear stepper, was the first thing that
other people have tried. Suffers from dripping...
They switched to using pressurised syringes (this is what is commonly used
for things like epoxies), better, but still drips. Hence the need for a
positive cutoff close to the needle.
- << Previous post in topic Next post in topic >>