Re: Head rises when moving towards the centre?
What you have is backlash. Since it repeats every time, it's not a skip. Look at things like belt tension and play in the rod ends. One classic is the belt drive gears slipping back and forth on the...
View ArticleRe: 3DR "Simple" Delta Printer
I've just published Building the 3DR “Simple” Delta Printer, Part III on my blog. I believe I have one final part to publish, which is about installing the firmware and calibrating the printer....
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Re: LISA Simpson
I found 4 more lead screw driven delta printers for a total of 5 not counting Lisa. Each of these lead screw delta printers use a guide to prevent the nut from rotating, (i.e. a constrained nut)....
View ArticleRe: LISA Simpson
@A2: I think you have some facts wrong. I am able to print accurate squares and round objects with much greater accuracy than 1mm. I have used it to prints parts for my GUS retrofit so I would say it...
View ArticleRe: 3DR "Simple" Delta Printer
Hi. I've finished building my 3DR-Simple and it works great!. I used printed LM8UU-style linear bearings and it's almost noiseless. My Rostock is very noisy in comparison. I ended using traxxas joints...
View ArticleRe: LISA Simpson
Most of the Delts'a out there have universal joints in them. The tolerance / wear / wobble issues with them are well documented. Going from the fancy bearings in a LISA back to the universal joints...
View ArticleRe: Head rises when moving towards the centre?
you could also check my blog post on [www.tripodmaker.com] to get more knowledge on how a delta printer moves around
View ArticleRe: LISA Simpson
Interesting first post for me. I have been following this for over a month. Let me see if I can clear up something about why I believe A2 thinks there is error in Delta movement (regardless of slop or...
View ArticleRe: LISA Simpson
@Hazer: Real quick. The prepocessor I have made breaks movement in 1mm or smaller chunks. (Actually whatever size you want but 1mm doesn't show any artifacts.) At that scale a straight line in one...
View ArticleRe: LISA Simpson
More to the point, if you are doing this on what's basically an 8 bit machine, precision costs even more compute cycles. Something like an ARM with an FPU would run major circles around a Mega in this...
View Article3DR/Delta PLA not moving towards hot end
Hello, I have finally completed my 3DR, all seems to be working correctly, levelled the bed, so far so good. I have hit a problem with printing. When I print everything looks fine, it heats up then...
View ArticleRe: 3DR/Delta PLA not moving towards hot end
You might not have enough tension on the PLA. I know on my Printrbot the PLA needs a good bit of tension.
View ArticleRe: LISA Simpson
Quotenicholas.seward @Hazer: Real quick. The prepocessor I have made breaks movement in 1mm or smaller chunks. (Actually whatever size you want but 1mm doesn't show any artifacts.) At that scale a...
View ArticleRe: 3DR/Delta PLA not moving towards hot end
I thought it might be something to do with that. Do you have any tips? Is the best thing to do to heat it up, and let it flow for a while before starting the print? Also, if its too close to the bed...
View ArticleRe: 3DR/Delta PLA not moving towards hot end
I like to heat my extruder and run a few hundred millimeters through to make sure everything is running smoothly. Make sure you bring your hotend up off the build plate (i usually go 20-30 mm). My...
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Re: LISA Simpson
I am just stating whats in the Marlin firmware. Since that is what most printers are mainstreaming towards, I thought it was relevant. Here is how Marlin does its calculations: 7bhx.jpg Triangle math...
View ArticleRe: 3DR/Delta PLA not moving towards hot end
What do you mean by adjust the tension on the PLA? Do you mean the amount available between the output of the extruder and the intake of the hot end? It was flowing really nicely, until I started...
View ArticleRe: 3DR/Delta PLA not moving towards hot end
Think I figured it out, RichRap has a length of PTFE going from extruder exit to the hot end input. This should mean that the PLA has nowhere to go but into the hot end. I will try this later tonight....
View ArticleRe: LISA Simpson
Since the main impact is from the tan function, the question becomes - are we in a "cute" region where there's a math shortcut that saves xx% of the cycles? Probably not.....
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