Re: LISA Simpson
Fixed the links! When I went from normal to on its side the print had a 1mm shift. Upside down vs right side up are about the same so if you can quickly/gentry invert it during the infill you won't...
View ArticleRe: LISA Simpson
Well, that's a lot better than what I get when I invert the Z axis on my i3 (which then falls to the floor more or less). :)-D:)-D How fast were you printing on each print? About the only other thing...
View ArticleRe: LISA Simpson
@uncle_bob: It is hard to judge but I can put weight on top platform and wiggle it by 1-2mm if I really try. If I had to guess I would say that the wood is flexing and not the pipe. If you use solid...
View ArticleRe: LISA Simpson
This is a very nice first print! Would you say that this is comparable to a Rostock, or better than a Rostock? I do not really have a comparison between both at this time. The inverted idea is very...
View ArticleRe: LISA Simpson
@CTF: I also have never used a Rostock so I can't really compare. I would guess that this is just a bit slower. Additionally, orientation has no effect on the overhangs. The angle of the nozzle is all...
View ArticleRe: LISA Simpson
@Nicholas, I was more interested in a final print quality rather than a speed comparison. The print you made with the Lisa looks very good, and I was wondering if the Rostock would be better or worse...
View ArticleRe: LISA Simpson
@CTF Print quality is a function of fine tuning the printer. Given about 5Kg of filament and three months you can probably optimize everything on a pair of printers for a given set of prints. Until...
View ArticleRe: LISA Simpson
@uncle_bob: I don't follow. The motors are attached to the bottom. You might have to draw me a picture. (I have consided mounting the steppers on top of the build plate a few times since the height of...
View ArticleRe: LISA Simpson
@uncle_bob - I have been thinking about polycarbonate tubes for the arm lengths instead of aluminum. Higher temperature than PVC with less sagging and good strength, light weight. I think you could...
View ArticleRe: LISA Simpson
@Nicholas I *think* (and I may well be wrong) that the bolts that fasten the motors down go through the plywood that is at the very bottom of the assembly. Put another way, they fasten below the...
View ArticleRe: Kossel Mini auto level deploy and retract position
You you first figure out where you needed to send the effector to position it to deploy the probe. For arguement sake let's use just Johann coded: G1 X25 Y93 Z100 F7000 ; get set to deploy using the Z...
View ArticleBuilding a Kossel Mini - BOM + Supplierlist
Good morning everybody. It's been a while ago since my interest in 3D printers started to grow. I was always looking for a cheap solution, because I was not willig to pay 2000€ for an Replicator,...
View ArticleRe: New Own Design Printer 'Cherry Pi'
I've updated my design a little around the delta rods and magnets. The original design was o.k but I felt a stronger attachment method would be better. I am now using 10mm spherical magnets and M5...
View ArticleRe: LISA Simpson
Scale up question: The central axis of the machine is a hollow plastic shaft that's printed as part of hub_bottom. The shaft appears to be 15mm in diameter. I'm *guessing* that scaling up that shaft...
View ArticleRe: LISA Simpson
@uncle_bob: My constraints when design were to have a hot end mount in the bottom, have a 4mm hole for a PTFE liner up the middle, and have the outside dimensions at 25mm. I bolt with or threaded rod...
View ArticleRe: LISA Simpson
I looked at : Hollow studs: [www.mcmaster.com] (not very precise) For a lot of money you can get precise (but no threads): [www.mcmaster.com] There are also a lot of smooth tubes in various other...
View ArticleRe: Building a Kossel Mini - BOM + Supplierlist
Hi Pascal, I'm building the Mini Kossel right now too. Good luck on your project. Mnutsch
View ArticleRe: LISA Simpson
Dual 608's: Right now the arms use dual 608's at the pivots. That's going to spread some of the forces out over more plastic. It also will constrain the shaft through the 608's quite well. An...
View ArticleRe: LISA Simpson
The short answer is you can't get away with it. 1X LISA couldn't and it gets worse the bigger you go. The medium length answer is that we need two side loaded to remove all play and get perfect...
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