Re: Rostock Mini build and Rostock vs mini questions
stratmaster458 Wrote: ------------------------------------------------------- > I'm still having trouble deciding what is the best > bowden extruder for the Rostock mini, and what > clamp I...
View ArticleV-Shaped Delta
This Thread will be about documenting Concepts/Ideas..... I am trying to make the Rostock more portable.
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Concept #001
Concept #001 A Stiff V Shape. By placing the Motors on the outside it could probably be folded in the Center...
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Re: V-Shaped Delta
... here an alternative concept with a really small frame footprint - replace the piezo-motors with linear drives and you have the idea ;)
View ArticleRe: V-Shaped Delta
... shouldn't be a problem to change the Rostock-firmwares, it's only slightly different calculation for the two angular axes --- here Y+Z instead of X+Y with the Rostock ...
View ArticleCounterweight on Rostock
Does is make Sens to add an Counterweight for every arm, so the motors have the same up and down force?
View ArticleRe: Counterweight on Rostock
Not really as you will then have twice the mass to move, so half the acceleration.
View ArticleRe: Counterweight on Rostock
It might, but how much weight is the question. The problem is that the down-force on each carriage changes depending on where the head is, relative to the carriage. As it moves further away from any...
View ArticleRe: Counterweight on Rostock
... I've seen some systems with a really long spring wired from the head to the ceiling, so the counter-force would be nearly constant over the Z range ...
View ArticleRe: Reprapped delta robot.
I think it's going to be difficult to get adequately accurate straight line motion from the more traditional delta layouts,. I think much of the wobble will be down to the stepper motion.
View ArticleRe: Counterweight on Rostock
Its common on conveyor lifters to add a counterweight to reduce the effective mass that is lifted and hence reduce the work done by the motor. Its also common on fork lift trucks. I believe the mass...
View ArticleRe: Counterweight on Rostock
Having the belts under tension in one direction like on a Rostock also means that any backlash due to belt/pulley mating imperfetions is minimised.
View ArticleRe: Counterweight on Rostock
Greg Frost Wrote: ------------------------------------------------------- > Having the belts under tension in one direction > like on a Rostock also means that any backlash due > to...
View ArticleSmooth rods and diagonal rods length dimension -Rostock
Hi I´m trying to build a Rostock, and i have doubts on the dimensions of the rods and the resulting printing area. I have 500mm smooth rods, and i wanted to ask how can i determine the diagonal rods...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
... you'll get a good estimate with drawing a sketch with one arm positioned horizontal - then the center of the toolhead should be able to draw an arc from one of the opposing struts to the other....
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
Thanks VDX I shall look into it later on tonight!
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
I did a rough sketch of how to look at the build area in this post. I suggest you aim for a rounded triangle, with each vertex close to the base of the closest pillar. That way, there are no points in...
View ArticleRe: Smooth rods and diagonal rods length dimension -Rostock
Ok. I have 500mm smoth rods, i did the diagonal rods with 210mm (from center to center of the ball ends) and i can get one arm completely vertical when the other 2 are completely horizontal. Now i...
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