Pages

▼

Saturday, September 23, 2006

First Working Part Printed & Fitted

This part was printed at 10:10pm Austrian time on the 13th September 2006, and was fitted the following morning (I got carried away celebrating the moment, OK?). For the record, it involved 15390.4 mm of travel, 11240.9 mm of extruding, has a volume of 4.777 cm^3 and took 6690.9s to print (about 1 hr 50 mins). Oh yeah, it works.



Vik :v)
at

11 comments:

  1. TomSeptember 23, 2006 12:42 PM

    It's a really great feeling to see milestones whipping past like this!

    ReplyDelete
  2. Forrest HiggsSeptember 23, 2006 3:20 PM

    Wow! 13 September 2006. I've got to update the RepRap entry in Wikipedia. This is important!

    ReplyDelete
  3. Adrian BowyerSeptember 23, 2006 6:04 PM

    A significant moment; it's supper-time here and coincidentally Christine & I have just opened a bottle of Burgundy. A toast: "Vik! And the first RepRap self-replicated part!"...

    ReplyDelete
  4. Forrest HiggsSeptember 23, 2006 6:06 PM

    Vik, I was checking the numbers you published, you know me and numbers.

    You say you extruded 4.777 cm^3 of CAPA and it certainly looks like it. You also say that you did 11240.9 mm of extruding.

    Okay, 4.777 cm^2 is 4777 mm^3. If we divide that by 11240.9 mm, we get a cross-sectional area of 0.425 mm^2.

    Dividing by pi and taking the square root of that gives us the radius of the extruder orifice. Multiplying that by 2 gives us the diameter of the extrusion thread which I figure to be about 0.74 mm.

    Now, were you using a 0.5 orifice to get that thread or something a little bit larger. I've been trying to chart the non-Newtonian expansion of the thread coming out of the extruder orifice and I haven't had any numbers this small before. Does that square with what you have?

    ReplyDelete
  5. Forrest HiggsSeptember 23, 2006 6:09 PM

    A toast: "Vik! And the first RepRap self-replicated part!"...

    Hear! Hear!

    And I think the next toast goes to you, Adrian, for setting up the whole RepRap project, getting funding for it and creating much of the enabling technology like the Mk II that is taking von Neumann's conjecture into reality. :-D

    ReplyDelete
  6. vik-olliverSeptember 23, 2006 11:29 PM

    The 0.74mm diameter calculation ain't too far off. The infill is slightly sparse and I've switched to using the 0.8mm nozzle.

    The next day we did some overhanging parts. These generate a lot of "hair" but work. I've got one going in Adrian's direction so he can analyse it, and he's already identified the probable issue in the code that caused some of the test shapes to fail. Oh, we've recycled some of the failures and it recycles just fine.

    The next thing I want to try and build is a gear, but that needs to wait until the RepRap is reassembled and callibrated. After that, I might try some metal injection using the head that Adrian sent to me in Austria.

    Vik :v)

    ReplyDelete
  7. vik-olliverSeptember 23, 2006 11:32 PM

    Adrian, don't get through all the Burgundy! I'd like a taste when I come around in December :)

    Mind you I'll be coming through Duty Free, so give me a shopping list...

    Vik :v)

    ReplyDelete
  8. csvenSeptember 24, 2006 4:07 PM

    Well done.

    ReplyDelete
  9. AlexSeptember 25, 2006 10:23 AM

    Congratulations. Don't let it eat your children.

    ReplyDelete
  10. eDSeptember 28, 2006 8:11 PM

    Congrats vik! I'm in france at the mo being a bricky for a week. Was telling some of the other labourers about RepRap.

    They don't believe me.

    ReplyDelete
  11. vik-olliverSeptember 29, 2006 10:56 PM

    Fortunately, belief is not necessary for the RepRap to work :)

    Vik :v)

    ReplyDelete