Re: [CAD_CAM_EDM_DRO] Re: reprap build started

Trust me, there is NO reason to mill the parts other than convenience.
Assuming they are printed well, the printed parts are PLENTY strong.
Remember, the loads on a 3d printer are trivial compared to the loads
on a router. That is why these "flimsy" little threaded rod
contraptions are reliably able to move 100mm/sec or more, some even up
to 200mm/sec or more (pushing 500IPM). The limitation is not the
plastic parts, it is the threaded rod. Replacing those is all that
needs (or needed once my design is released) to happen.

On Wed, Oct 12, 2011 at 11:12 AM, Alan <KM6VV@...> wrote:
> Yes, I'd be inclined to mill ALL the plastic parts, especially the extruder!
>
>
> What, I already have an "upstairs" shop, er, office!
>
> True, swapping the headstock in and out gets to be a pain.  Especially when
> it's well cabled in.
>
> Ideally, one could re-use the stepper driver electronics, and the controller
> PC.  However the Arduino isn't much of a cost, I suppose.  And the PCB that
> mounts on it basically just holds the Pololu stepper drivers.  Replace the
> drivers with line driver ICs, and drive your stepper driver box instead.
> NEMA #17s are probably OK, but surplus #23s wouldn't cost much.  It could
> share my existing Sherline lathe control PC and driver box!
>
> An 80/20 Aluminum Prusa with a little brass thrown in for Steam Punk!  I
> like it!
>
> Alan  KM6VV
>
>> -----Original Message-----
>> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Ron
>> Thompson
>>
>> On 10/12/2011 8:24 AM, Ron Ginger wrote:
>> >
>> > > I can just see a compact little stepper-driven extruder that mounts
>> > > where the current Sherline spindle mounts!
>> > >
>> > > Alan KM6VV
>> >
>> You could mill all the printed plastic parts, though. I'd like to see an
>> aluminum Prusa. Or throw in some brass for a steam punk thing.<GRIN>
>>
>> Multipurpose machines are a pain. Besides, I figure the 3D printer can
>> live in the house instead of the shop. It is a much cleaner/quieter
> machine.
>>
>>
>> Ron Thompson
>> On the Beautiful Florida Space Coast, right beside the Kennedy Space
> Center,
>> USA
>
>
>
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