Saturday, September 10, 2005

 

Head Design Released

I have (finally...) completed the design of Version 1 of the RepRap Polymorph extruder head. Here's a picture:



The large grid squares on the image are 10 mm across.

A 12v geared electric motor (A) drives a 3 mm diameter rod of the polymer to be extruded (B) by means of a stack of pinch-wheels (C) into a heated nozzle (D). The heated nozzle has a small hole in the bottom end out of which a stream of molten polymer emerges. The electronics for controlling the heater and the motor can be partly seen at (E). Polymorph has a low melting point of 62 oC, but the heater is capable of being controlled to temperatures up to 200 oC. At around 170 oC the Polymorph becomes inviscid enough to extrude easily.

For complete details of the extruder, including downloads of all its design files, see Item 11 in the Reports, results, and documentation page of the RepRap Website, or follow this direct link.




# posted by Adrian Bowyer @ 1:14 PM
Comments:
Looks very nice.
# posted by Blogger Svend : September 11, 2005 8:23 AM
 
Thanks! (And it works...)
# posted by Blogger Adrian Bowyer : September 12, 2005 6:18 PM
 
It looks damned good for a first cut. I love the recipe for making the rods to feed it. :-)
# posted by Blogger Forrest Higgs : September 13, 2005 2:02 AM
 
Is the Feed for this blog live? I can't seem to get me aggregator to read it when I subscribe. It's possible that my rapid prototyping tooling site is rendering the feed or service wrong within my own code. Not sure. I'll double check.
# posted by Blogger Katrina : October 14, 2005 4:13 AM
 
Do you have an Rss feed to subscribe to? Im learning how to install an Rss reader and I'm learning. But it seems that I've been juggling the learning of rapid prototyping cnc and development in general. I'll get it working though.
# posted by Blogger Katrina : October 14, 2005 5:08 PM
 
Great info. I've now subscribed to your blog feed so I can access it from my sheet metal prototyping site. I should make it easier to read when I'm busy. Thanks.
# posted by Blogger Katbo : October 18, 2005 3:00 AM
 
I can't wait until I install my rss reader so I can subscribe to this blog. I'll have to finish building my rapid prototyping machine site first so that I'll have a place to install the feed. Prototyping is my hobby.
# posted by Blogger Katrina : October 18, 2005 4:15 AM
 
Do you have an Rss feed to subscribe to? Im learning how to install an Rss reader and I'm learning. But it seems that I've been juggling the learning of design prototyping and development in general. I'll get it working though.
# posted by Blogger Katrina : October 18, 2005 6:31 AM
 
We use Atom rather than RSS, but most feed readers support both formats.
# posted by Blogger Adrian Bowyer : October 25, 2005 12:12 AM
 
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