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Re: 3DR "Simple" Delta Printer
Pierre, Remember to print the third part (HERE) for the hot-end holder as well. I didn't see it in any of the pictures, but it goes into the whole hot-end holder sandwich. It provides the third mount...
View ArticleRe: LISA Simpson Take 2
Ignoring the ability to level the bed, doesn't the cut out lowered bed trade better screw utilization for build complication? Personally, I'll gladly pay a little extra for the screws to avoid this...
View ArticleRe: LISA Simpson Take 2
I've done the auto bed leveling stuff on other printers. It does work, but you need to do it right. The probe and mount need to be more rigid that you might at first think. Getting a top mounted probe...
View ArticleRe: Has anybody tried 3mm filament in airtrippers filament drive for rostock?
One limit case is trying to push filament with close spacing against a glass print surface. Nothing's ever flat / level so you get variable back pressure as you hit the bumps ...
View ArticleRe: LISA Simpson Take 2
Thanks Uncle. I'm well aware of the software flow, but you probably (?) also don't need to autolevel for every print. Besides, I consider the current pre-processor flow temporary; with a 32-bit...
View ArticleRe: LISA Simpson Take 2
If you are going to the effort of putting the leveling probe on the head, you might as well use it to its fullest. Plywood does change as it dries out. Variable warp with time is not at all an unusual...
View ArticleRe: LISA Simpson Take 2
@uncle_bob: Unfortunately the arrangement you propose doesn't produce constrained motion. The central hub will be able to rotate and raise given three constant steppers rotations. (Technically you are...
View ArticleRe: LISA Simpson Take 2
@uncle_bob: I suspect that putting the inverse kinematics into firmware will get easier and easier. I am avoiding writing firmware for a few reasons. Eventually, I will be addressing the firmware. I...
View ArticleRe: LISA Simpson Take 2
Warp: My concern is mainly the warp being humidity / time dependent and messing up your bed level. Three pivot: Darn that physics stuff .... I had been looking at it only at the edges. The center does...
View ArticleRe: 3DR "Simple" Delta Printer
JohnSL, You mentioned that you are using a different bed-clamp than the spiffy spiral jobs. Is that the (decidedly less cool looking) spring loaded rectangular ones in some of your pics? Is that to...
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Re: 3DR "Simple" Delta Printer
brendanjerwin, here are the clips I was referring to: Bed Clips The version of Marlin I have on my printer is RichRap's version, which doesn't have support for M666. I'm hoping I can get the latest...
View ArticleRe: LISA Simpson
Math Question: If I look at the ever popular: [attachment 25019 buildarea.png] 1) The point that the largest circle hits the build envelope appears to be half way between the two drive shafts. 2)...
View ArticleRe: LISA Simpson
I don't believe you want the arm to ever be absolutely horizontal, it might be a singularity there. So there is extra length to allow for a shallow angle in the arm.
View ArticleRe: 3DR "Simple" Delta Printer
I have a bunch of 25mm instead of 20mm uprights. Can you put up a set for a 25mm build please. I tried scaling but the 8mm rods position and carriage changed dimention also. Just need the 20x20mm...
View ArticleRe: LISA Simpson
@uncle_bob: All that you said is correct except that the diagram was from when the shoulder offset was 25mm not 57.5mm. This extra 12.5mm adds 25mm to the build diameter. @A2: There is no singularity...
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Re: LISA Simpson
SumPod Delta 3d printer uses a lead screw. mod_embed_images_loadimage('c11d2d184dc9ddd7ac576f68cef80f37',...
View ArticleRe: LISA Simpson
Math: I was going over the spread sheet back and forth figuring I'd made a really basic error. They are the ones that are very hard to spot (you missed the existence of a third arm segment). New...
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Re: Building a 3DR "Simple"
Looks like I'll get the last of the major components on Tuesday! I just printed the spiral (my wife calls them paisleys) bed clamps and installed them. IMG_20140118_093749.jpg I really like them and,...
View ArticleRe: Worm Drive Grounded Delta Printer
Small update: I printed new longer forearms which will give more printable Z area. After a bit of re-calibration, here are some photos. [attachment 25068 DSE_4825.JPG] [attachment 25069 DSE_4826.JPG]...
View ArticleRe: LISA Simpson
Motors: Speed got me back to looking at the steppers that came in a while back. What came in isn't quite what the listing said it would be (welcome to auction sites ...). The motors in the listing did...
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