On 2/21/2015 6:44 AM, Viesturs Lācis wrote:
> 2015-02-21 15:16 GMT+02:00 Tobias Gogolin :
>> I am suggesting small geared brushless motors
>
> Gearing will introduce backlash. Linear delta machine may have
> end-effector vs actuator travel ratio up to 2:1, depending on rod
> length vs delta radius
On 2/21/2015 6:16 AM, Tobias Gogolin wrote:
> So after understanding that a linear driven delta 3D Printer is the most
> attractive tool to have in ones repertoire me and a friend, who has already
> previous cnc mill building experience decided to get serious, and there is
> one disagreement, he th
On 02/21/2015 05:27 PM, andy pugh wrote:
> On 22 February 2015 at 00:17, Tobias Gogolin wrote:
>
>> One reply mentions the Ramps1.4 system; I wonder is the translation done
>> between linear delta motion control and Euclidean G-code, or is non
>> Euclidean G-Code used?
>
> http://www.linuxcnc.o
On 22 February 2015 at 00:17, Tobias Gogolin wrote:
> I imagine that gear backlash can be measured and if its not captured by an
> encoder on the geared down axis, it should at least in software be
> considered for every change of direction. Is there such an option?
>
There is: look at BACKLASH
Thanks to everybody who replied so far for the rays of light! Maybe I
should admit that I have difficulty to imagine the algorithm to translate
from 3 linear axis of a delta printer to the 'euclidean' 3d space that the
model will be printed in, therefore I also don't really begin to guess what
kind
On Saturday, February 21, 2015 11:11:36 AM Kirk Wallace wrote:
> On 02/21/2015 07:29 AM, Peter C. Wallace wrote:
> > On Sun, 22 Feb 2015, Erik Christiansen wrote:
> >
> > snip
> >
> >> On a 3D printer, free of cutting forces, I figure microstepping
> >> would be OK at constant velocity, but rubbe
On Saturday, February 21, 2015 10:29:56 AM Peter C. Wallace wrote:
> On Sun, 22 Feb 2015, Erik Christiansen wrote:
>
> snip
>
> > On a 3D printer, free of cutting forces, I figure microstepping would
> > be OK at constant velocity, but rubbery under strong acceleration.
> > At least it's only ful
On Saturday, February 21, 2015 10:22:15 AM Erik Christiansen wrote:
> On 21.02.15 09:27, Gene Heskett wrote:
> > The disadvantages are that they will continuously burn from 25% to
> > 50% of their running power even if being driven by smart controllers
> > that can reduce the drive when they have s
On 02/21/2015 07:16 AM, Tobias Gogolin wrote:
> So after understanding that a linear driven delta 3D Printer is the most
> attractive tool to have in ones repertoire me and a friend, who has already
> previous cnc mill building experience decided to get serious, and there is
> one disagreement, he
On 02/21/2015 07:29 AM, Peter C. Wallace wrote:
> On Sun, 22 Feb 2015, Erik Christiansen wrote:
>
> snip
>>
>> On a 3D printer, free of cutting forces, I figure microstepping would be
>> OK at constant velocity, but rubbery under strong acceleration. At least
>> it's only full steps that you can pe
On Sun, 22 Feb 2015, Erik Christiansen wrote:
snip
>
> On a 3D printer, free of cutting forces, I figure microstepping would be
> OK at constant velocity, but rubbery under strong acceleration. At least
> it's only full steps that you can permanently lose.
>
Actually step motors lose steps in mu
On 21.02.15 09:27, Gene Heskett wrote:
> The disadvantages are that they will continuously burn from 25% to 50% of
> their running power even if being driven by smart controllers that can
> reduce the drive when they have stopped. And the discrete steps they
> make, which with smart controlers
On Saturday, February 21, 2015 08:16:07 AM Tobias Gogolin wrote:
> So after understanding that a linear driven delta 3D Printer is the
> most attractive tool to have in ones repertoire me and a friend, who
> has already previous cnc mill building experience decided to get
> serious, and there is on
Are you thinking servos because your building a giant delta?
There are thousands of users that build Kossel deltas with a Ramps 1.4
Power and Nema 17 steppers. In fact that is what I'm planning on
building as soon as the Chinese New Year is over.
http://gnipsel.com/images/3-D%20Printing/
JT
O
On 21 February 2015 at 13:16, Tobias Gogolin wrote:
> he thinks he would be fine with inexpensive steppers, I
> am suggesting small geared brushless motors, so I am hoping for an expert
> opinion
>
The internet is full of opinions, but it is hard to decide how expert they
are :-)
There are thou
2015-02-21 15:16 GMT+02:00 Tobias Gogolin :
> I am suggesting small geared brushless motors
Gearing will introduce backlash. Linear delta machine may have
end-effector vs actuator travel ratio up to 2:1, depending on rod
length vs delta radius proportion, so any backlash in actuator means
even lar
So after understanding that a linear driven delta 3D Printer is the most
attractive tool to have in ones repertoire me and a friend, who has already
previous cnc mill building experience decided to get serious, and there is
one disagreement, he thinks he would be fine with inexpensive steppers, I
a
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