[islandlabs] makerbot status and radio links

john abella john at abella.net
Fri Sep 17 12:13:01 EDT 2010

The reasons for the extruder not working right are usually one of / a
combination of:

- temp too low
- idler too tight (crushing the filament so much it doesn't fit into the
- idler too loose (gear can't grip on it)
- barrel threaded into PTFE too hard, causing a lip in the PTFE
- some other kind of blockage / snag in the barrel

If you're using ReplicatorG you can go in the control panel and just tell it
'forward' to do test extrusions all day.   Make sure your speed is set to

If you can, heat it up, reverse out your filament and measure part that has
gone through the idler but hasn't gotten melted yet....  make sure it's like
3.2mm or less.

John (in MakerBot / RepRap mode for Maker Faire)

On Thu, Sep 16, 2010 at 8:13 PM, Burns, William <burns at cshl.edu> wrote:

> The makerbot is extruding.. but it's not extruding reliably enough.
> The nozzle output is weak, and stops when it shouldn't.
> Also, there's a minor problem with one of the black plasic slider-sleeves.
> It fell into the stage, and needs to be glued into place.
> Last night I tried to get the extruder going without doing a build, but I
> couldn't figure out how to do it. When I send the gcode by itself it doesn't
> seem to work.
> The motor doesn't turn.
> The extruder-wheel tension may be too much. It seems like the plastic gets
> crushed a little too much. I'm not sure if that's what the problem is.
> -Bill
> Open GPS Tracker
> http://www.electronics-lab.com/projects/robotics/001/index.html
> http://www.electronics-lab.com/projects/rf/index.html
> http://circuitdiagram.net/15w-transmitter-fm.html
> complete FM transmitter from discrete components
> http://circuitdiagram.net/15w-fm-rf-amplifier-with-2sc2539.html
> one transistor receiver
> http://circuitdiagram.net/one-transistor-fm-receiver.html
> http://circuitdiagram.net/100w-rf-amplifier-with-bly94.html
> Basic RF Oscillator circuit diagram (one transistor transmitter)
> http://circuitdiagram.net/basic-rf-oscillator.html
> Circuit Category: Radio
> http://circuitdiagram.net/electronic/radio
> _______________________________________________
> List mailing list
> List at islandlabs.org
> http://freeculture.org/cgi-bin/mailman/listinfo/list
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