Re: Has anybody tried 3mm filament in airtrippers filament drive for rostock?
My apologies. Here, units work out properly now: 3.8kg x cm / .4cm = 9.5kg the unit cm cancels out as it should. 4.8kg x cm / .65cm = 7.38kg To be technically correct kg isn't a unit of force, but...
View ArticleRe: Rumba Microstepping Jumpers
I never actually solved it. Just sidestepped it. I swapped out my old drivers for drv8825 and went for a 12v psi. All works fine now. I have subsequently tested each of the old drivers on a breadboard...
View ArticleRe: Grounded Experimental Delta Printer
Quoteowens Quotenicholas.seward @pjoyce42: You can print it in the orientation given. Most printers can bridge that far. It may sag but you have tons of layers until you get to the gear part so most...
View ArticleRe: Grounded Experimental Delta Printer
I merged the branch since I trust owens that it works so no more bridging. I am fairly sure you couldn't do it with just a 2D arch.
View ArticleRe: LISA Simpson
I have a 4' tall by 2' long/wide MDF cabinet on casters with a glass door that I have been looking for a design to build into. Would the 3/8" screw be enough with a rigid cabinet? Or at that length,...
View ArticleRe: LISA Simpson
I've got a variety of cabinets running around here. I'd bet the PVC under compression approach is as rigid as any of them, at least in the directions where it counts.
View ArticleRe: Has anybody tried 3mm filament in airtrippers filament drive for rostock?
It's the silly pound force thing all over, in this case it's kg used as force. There certainly are a lot of reports on these forums of people who are unable to get those torque level motors to work on...
View ArticleRe: LISA Simpson
LISA Simpson great I see a very un-happy Wally in corner watching LISA work. Looking at video: With the stationary trolley (not being moved by leadscrew) being rotated by the other two trolleys...
View ArticleRe: LISA Simpson
@jason.fisher: I think that 3/8" is just this side of good for my arrangement. The max deflection is proportional to l^3/r^34. 24^3/.125^4=48^3/r^4 so r=.21in You need to find a lead screw with a...
View ArticleRe: LISA Simpson
[attachment 22584 buildvolume.png] Here is a visualization of the build volume. It is 260mm tall at it highest. It is 235mm tall close to the screws. (It was a pleasant surprise to see that the top of...
View ArticleRe: LISA Simpson
Quotenicholas.seward I really need to see if I can mod Slic3r or Cura to show the outline of the build area to help with part layout. Now that would be great!
View ArticleRe: Bowden Extrusion Issues and Calibration
I just realized my steps/mm for my extruder were way off. I think that might be what the problem is. I'm going to give it a shot and let you know how it goes.
View ArticleRe: LISA Simpson
[attachment 22591 sidewalls.png] This is what I have in mind for the sides. The printed plastic clips should just snap over the PVC pipes.
View ArticleRe: Has anybody tried 3mm filament in airtrippers filament drive for rostock?
Quoteuncle_bob It's the silly pound force thing all over, in this case it's kg used as force. There certainly are a lot of reports on these forums of people who are unable to get those torque level...
View ArticleRe: LISA Simpson
@nicholas.seward Renders look great! Build area: For a given arm length, they can only reach so far. How are you able to increase the lower platen build size without increasing the arm length? Are you...
View ArticleRe: LISA Simpson
@A2: The relationship between the screw spacing, arm length, hub offset, and shoulder offset is complex. If you want to increase the xy then you will probably increase each of these a little. The...
View ArticleRe: Grounded Experimental Delta Printer
If you mounted these arms (steppers and all) on LISA's lead screws, would you have 6DOF? :)
View ArticleRe: Grounded Experimental Delta Printer
@jason.fisher: Yes! Yes you could. There are a few immediate problems. *You need a 2D joint at the shoulders. (Not really a problem.) *Your tilt is limited to be perpendicular to plane that goes...
View ArticleRe: LISA Simpson
[github.com] Files are posted. I changed everything over to the 7/16" screw. I haven't tested this screw so beware. I have it ordered and we will know soon. I am working on the BOM. It should be...
View ArticleRe: Grounded Experimental Delta Printer
I posted a bounty for GUS's documentation. I am working on it anyways but a little extra money will definitely help in the motivation department.
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