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I've gotten the 3d printer finished!

But it ran only a few minutes before the extruder head ate itself, and melted it's PTFE thermal barrier. Booo! I have a new one and spares on order.

It's quieter than I expected, which is good. The final build area looks like 7.5" x 6" x 9". I managed to hide away all the electronics underneath, except for the extruder controller. A short circuit nearly fried my extruder controller, but I was able to solder up a bridge past the fried traces. I still need to set up my opto-endstops, but that's mostly just a wiring issue.


( 11 comments — Leave a comment )
Oct. 18th, 2009 02:17 am (UTC)
Coooooool. I took your advice and am siting on the wordpress until I know how exactly to use it. Can't wait to see the updated 3-d printer output. :D
Oct. 18th, 2009 02:29 am (UTC)
Now all you need is something to extrude, once you get the head replaced!
Oct. 18th, 2009 09:29 am (UTC)
Got anything you wanted extruded?
Oct. 18th, 2009 10:17 am (UTC)
I don't, but my boyfriend might! I'll point him this way in the morning...
Oct. 18th, 2009 02:48 am (UTC)
I had a 'struder meltout a while back and was able to fix it by putting a nut and washer on the heater barrel to lock it in place despite a slipped-out PTFE barrel. Can this help your issue?
Oct. 18th, 2009 09:24 am (UTC)
Well, I coulda done that, before I bored out the PTFE, rethreaded it, then made a steel sleeve that the heater barrel screwed into. Which doesn't quite work. The filament gets jammed against the sleeve. So I guess I gotta wait for the replacement PTFE barrel.

You know, that PTFE thermal barrier seems to be the biggest failure point of the extruder. I wonder if a ceramic replacement would work better?
Oct. 18th, 2009 07:50 pm (UTC)
Yeah, a nut and washer would make a nice easy fix. I'll do that preventatively, when I get a new barrel.
Oct. 18th, 2009 06:17 am (UTC)
You never fail to impress me! That is one slick looking machine!
Oct. 18th, 2009 06:48 am (UTC)
Should I put together a few .STL files, or do you have a big enough queue with your own test articles and projects already? Any requests for generated files? Default plan would be the octahedral truss, a couple of other fractal material ideas, and whatever else comes to mind while coding these.

Oct. 18th, 2009 09:25 am (UTC)
Oddly I don't really have a queue of things to print yet. This is a cool tool in search of a use. :)
Oct. 20th, 2009 08:46 pm (UTC)
It looks really exciting. Glad you got it done --except for the parts that misfunctioned. I will look forward to seeing what you make with it.

-Love, Mom
( 11 comments — Leave a comment )

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  • 17 Oct 2011, 19:18
    Clever! ^_^
  • 7 Oct 2011, 08:38
    Was each link made from two pieces, or was there fill material inside that you removed? I'm having trouble seeing how to print these in a makerbot-compatible way (though I could just be overlooking…
  • 5 Oct 2011, 22:40
    Nah. It'd just take a dissolvable support material and higher resolution. There are commercial 3d printers out there that can print ball bearing assemblies in one pass, fully assembled.
  • 5 Oct 2011, 18:46
    Nice! ^_^ I was going to be flabbergasted if you were actually able to print it as a unit, but I guess that would take antigravity.
  • 5 Oct 2011, 18:19
    I printed each piece individually and assembled them after some cleanup. I did print four segments at a time, though, unattached, in a 2x2 grid.
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