> If we can buy a standard one off the shelf for a reasonable price then
> I would probably prefer to go that route - otherwise it will end up
> being a +6 month project before we squirt our first bit of plastic.

> On Jun 1, 1:44 pm, Steven Pickles<thatpix...@gmail.com>  wrote:
>> If you want to go the PCB route, I recently bought a huge roll of aluminium
>> tape which should work as a heat spreader.

>> [image: Inline images 1]<http://www.flickr.com/photos/_xiq/7312473308/>

>> pix

>> On 1 June 2012 14:03, Scott B<solar.sen...@gmail.com>  wrote:

>>> What are the thoughts on a heater bed design?
>>> Are the Huxleys an etched PCB, or resistors, for the heat source?
>>> On Jun 1, 1:29 pm, Steven Pickles<thatpix...@gmail.com>  wrote:
>>>> I think the only exploration of repurposing welding parts is using tips
>>> as
>>>> nozzles, but now purpose built nozzles are not too hard to come by (and
>>>> welding tips generally only go down to 0.6mm). Hobbing bolts with a
>>> dremel
>>>> cutting disk seems to be a common mothod of getting a knurled bolt for
>>>> driving the filament. There are even some printable jigs on thingiverse
>>> for
>>>> just this. I doubt that wear is a problem with metal driving plastic. The
>>>> problem is normally ground off plastic filling the knurls, but it doesn't
>>>> happen often. I clean off mine whenever my drive is open, but I've never
>>>> had to open it just to clean it.
>>>> pix
>>>> On 1 June 2012 13:42, Scott B<solar.sen...@gmail.com>  wrote:
>>>>> looks exactly like the feeder on my MIG welder.... Has anyone looked
>>>>> in to using hardened knurled wheels from a MIG? - the bigger dia
>>>>> should give a nice 'bight', and they will never wear out.
>>>>> On Jun 1, 1:05 pm, Steven Pickles<thatpix...@gmail.com>  wrote:
>>>>>> The quick release for this extruder (which is actually in this
>>>>> thinghttp://www.thingiverse.com/thing:11731) looks a lot like the one
>>> I
>>>>> use on
>>>>>> my printer:http://www.thingiverse.com/thing:7113
>>>>>> It's a good idea, saves a lot of futzing around with tension on the
>>>>>> filament drive between filament swaps.
>>>>>> pix
>>>>>> On 1 June 2012 13:17, Jonathan Wheare<jonathanwhe...@gmail.com>
>>> wrote:
>>>>>>> This may be of interest - it is a more or less standard extruder
>>> that
>>>>> has
>>>>>>>   been modified with a quick release to allow filament to be rapidly
>>>>>>> inserted or removed.
>>>>>>> http://www.thingiverse.com/**thing:12320<
>>>>> http://www.thingiverse.com/thing:12320>
>>>>>>> I have also stumbled over another aluminium mendel design that
>>> could be
>>>>>>> useful:
>>>>>>> http://www.thingiverse.com/**thing:16076<
>>>>> http://www.thingiverse.com/thing:16076>
>>>>>>> J.
>>>>>>> On 01/06/12 13:11, Scott B wrote:
>>>>>>>> Good Idea, that was the thinking behind our modular stepper
>>> drivers
>>>>>>>> etc. If a machine goes down you want to be able to quickly and
>>> easily
>>>>>>>> swap parts out with another machine or spares to diagnose
>>> problems.
>>>>>>>> RC hobby connectors would be great for things that require a bit
>>> of
>>>>>>>> current (bed and tip heaters) The rest should be able to be done
>>> with
>>>>>>>> a normal mulit-pole connectors, we would just have to come up
>>> with a
>>>>>>>> wiring standard and stick to it.
>>>>>>>> On Jun 1, 12:31 pm, Paul Schulz<pschul...@gmail.com>    wrote:
>>>>>>>>> ... also keen on developing a modular reprap print head to
>>> improve
>>>>>>>>> reliability. Eg if one gets clogged can swap it for another and
>>> fix
>>>>> in
>>>>>>>>> slow
>>>>>>>>> time. (Need source of heatsink/fan combination, and to find a
>>>>> suitable
>>>>>>>>> connector/socket.)
>>>>>>>>> On Jun 1, 2012 12:55 PM, "Scott B"<solar.sen...@gmail.com>
>>>   wrote:
>>>>>>>>>   and yeah, I am expecting to make most of the frame on the CNC
>>> mill -
>>>>>>>>>> although I have a AC Tig I would most likely go for a bolt
>>> together
>>>>>>>>>> design so that warping isn't an issue, and an updated parts can
>>> be
>>>>>>>>>> bolt on/off.
>>>>>>>>>> This is what it can pump out in a couple of hours once its up
>>> and
>>>>>>>>>> runninghttp://farm5.**staticflickr.com/4099/**
>>>>>>>>>> 4763653932_49edd8474d_b.jpg<
>>>>> http://farm5.staticflickr.com/4099/4763653932_49edd8474d_b.jpg>
>>>>>>>>>> (cat not included)
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