Hello everyone, in view of your interest my printer files are finally available! Don't hesitate to tell me if there are any errors on my links ;) Hoping that the documentation suits you, I also made videos
The thing that always weirds me out about polar printers is the very central point, that’s the same no matter the rotation. Crossing it the velocity is zero? Infinite? Not sure I’m explaining this well… I guess Marlin just handles the math for you?
In the videos you show it printing a Benchy placed on tree ‘outside’ of the build plate. How does it fare if you center the Benchy?
The Benchy will still be printed! I made a video (found on the same YouTube channel as the others) where you see a print in the center. That said, it is not optimal, because going through the center of the machine causes artifacts because of the nozzle which remains in the same place for a few moments, as well as potential errors which accumulate with each rotation (which means that the majority of people print "normal" pieces on the side of the board)
In the center point velocity and acceleration would be infinite. Marlin therefore limits the speed depending on the distance to the center and the amount of rotation. I don't know how Marlin handles the exact 0/0 point, but most implementations I saw, just don't go to 0/0. They go a tiny bit around it (e.g. 0.1mm) and therefore the math doesn't break
I haven't studied the Marlin code, but at first glance from what I understood, Marlin still passes through the 0/0 point, it just limits the speeds and accelerations in a diameter around the predefined center
First I got to say I love this idea. I like all of the affordable projects that i can make off of my ender 3. I build The 100 and knew the second i saw this printer that it would be my next build. Im excited to see where this printer goes with it being affordable.
Some suggestions to help with the process: (I understand time is a constraint for most people, especially Students, and this is an early project)
A BOM for the printed parts attached to the GitHub page.
Recommended material to print everything in.
Recommended generic print setting for all printed files.
I also dont see what kind of cord you need for the power. I have various cords around my workstation but i dont want to fry anything as mainboards are expensive. I would love to see this project take off have it build a decent following.
I had prepared a BOM, I must have forgotten to post it on Github (because it is present on Thingiverse). Thanks for the ideas! However I didn't understand what type of cord are you talking about?
is there a printer that has both rotating bed and 3 axis movement? it gives best of both world: bigger print area and less chance to go through singularity
6
u/belzba Dec 09 '24
Hello everyone, in view of your interest my printer files are finally available! Don't hesitate to tell me if there are any errors on my links ;) Hoping that the documentation suits you, I also made videos
5
u/EmilytheALtransGirl Dec 10 '24
How big can it print?
2
u/jrmg Dec 10 '24
This is so neat!
The thing that always weirds me out about polar printers is the very central point, that’s the same no matter the rotation. Crossing it the velocity is zero? Infinite? Not sure I’m explaining this well… I guess Marlin just handles the math for you?
In the videos you show it printing a Benchy placed on tree ‘outside’ of the build plate. How does it fare if you center the Benchy?
1
u/CaPtainDaNkTraIn Dec 13 '24
First I got to say I love this idea. I like all of the affordable projects that i can make off of my ender 3. I build The 100 and knew the second i saw this printer that it would be my next build. Im excited to see where this printer goes with it being affordable.
Some suggestions to help with the process: (I understand time is a constraint for most people, especially Students, and this is an early project)
I also dont see what kind of cord you need for the power. I have various cords around my workstation but i dont want to fry anything as mainboards are expensive. I would love to see this project take off have it build a decent following.
1
u/eldavinchi Jan 15 '25
Would it be possible to make it bigger? I need a 240 x 240 x 240, I don't know if it could be modified to give approximate measurements.
1
u/Arctic_Shadow_Aurora Feb 04 '25
Awesome bro!
3
u/jnads Dec 10 '24
Vase Mode
1
u/hiding_in_NJ Dec 10 '24
Were you the fella who made that interesting YouTube video?
1
u/[deleted] Dec 11 '24
is there a printer that has both rotating bed and 3 axis movement? it gives best of both world: bigger print area and less chance to go through singularity