CoreXE, will it work? Any thoughts? is it even worth it.
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@amythebun For the record, he took servos off, I think I heard it in one of his latest videos. Anyway, the point of the video was to show what accels he could reach before and after weight reduction.
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@commie oh that makes sense, I just wonder about IRL differences of 70g of weigh.
any ideas if belts would cause extrusion issues? I don't see why tbh, but I thought I ask.
one issue with my idea is that i'd need machines/laser cut gears because 3dprinting might create oval gears and cause issues, then again voron used those printed pulleys for a long time.
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Worth it is a very subjective term. One basic thing those people trying to make their printers very fast is that the easiest way to remove vibrations is to make your frame heavier. Just by adding enough mass to the frame you can make a print head of several kg move at 1000mm/sec.
Just ask essentium. Or pnp machines.
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@amythebun there was a discussion about a similar concept here:
https://forum.duet3d.com/topic/25228/add-extruder-axis-to-kinematics-matrix/6 -
@roiki11 frame weigh is a small portion of what adds up from what i know, then again i'm speaking from experience and aren't an engineer.
I've realized that the linear guides and plastic printed parts that flex under the inertia of the components being thrown around are usually the biggest bottlenecks. reduced weight reduces the forces on these components! but i'm just wondering if 70g is worth so many idlers and all that.
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@t3p3tony Thank! sadly none of them actually tried it, it remained at theory.
and I'm confused about the kinematics talk, my idea would basically behave like a Cartesian, it'd not need any special calculations!
EDIT: oh crap i just realized as i was staring at my drawings, this isn't cartesian, the X axis moves when you move y.... Woops! YEAH i don't think this is a good idea anymore as somebody would have to make the code for it! and i'm not good enough at math/coding to do this myself yet! -
@amythebun said in CoreXE, will it work? Any thoughts? is it even worth it.:
this isn't cartesian, the X axis moves when you move y.... Woops! YEAH i don't think this is a good idea anymore as somebody would have to make the code for it! and i'm not good enough at math/coding to do this myself yet!
There are new possibilites to configure those x-y movements (by defining a matrix which defines how they are connected)*), so no new kinematics are needed. E could be used as normal axis, but the problem with E is, E uses special things like pressure advance, which are not included in the code for "normal" axes.
'*) documented here: https://duet3d.dozuki.com/Wiki/M669#Section_Parameters_for_Cartesian_CoreXY_CoreXZ_CoreXYU_CoreXYUV_MarkForged_kinematics_RRF_2_03_and_later_only in the examples with the 1s and 0s.
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@joergs5 said in CoreXE, will it work? Any thoughts? is it even worth it.:
@amythebun said in CoreXE, will it work? Any thoughts? is it even worth it.:
this isn't cartesian, the X axis moves when you move y.... Woops! YEAH i don't think this is a good idea anymore as somebody would have to make the code for it! and i'm not good enough at math/coding to do this myself yet!
There are new possibilites to configure those x-y movements (by defining a matrix which defines how they are connected)*), so no new kinematics are needed. E could be used as normal axis, but the problem with E is, E uses special things like pressure advance, which are not included in the code for "normal" axes.
'*) documented here: https://duet3d.dozuki.com/Wiki/M669#Section_Parameters_for_Cartesian_CoreXY_CoreXZ_CoreXYU_CoreXYUV_MarkForged_kinematics_RRF_2_03_and_later_only in the examples with the 1s and 0s.
yeah honestly after having that realization i realized, this isn't worth it, i'm going for plain markforged, 70g isn't worth the effort!
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@amythebun I saw your tool changer, it's interesting work!
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@joergs5 aww thanks
which one the magnetic or the twist?this one is for my "final" version, i'm building an entire new printer from scratch, and it'll be built to ASMBL and it's built for tool changing from the start
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@amythebun the magnetic. I saw and read your github and the hackaday blog. I followed Jubilee's discord and want to assemble it at the tip of a robot arm.
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@joergs5 said in CoreXE, will it work? Any thoughts? is it even worth it.:
@amythebun the magnetic. I saw and read your github and the hackaday blog. I followed Jubilee's discord and want to assemble it at the tip of a robot arm.
Oooh that's awesome ^_^ I wish you luck. Others have told me that magnetic spheres are strangely way more expensive/uncommon outside of iran, if you ever need, I can design a version for you without the spherical magnets!
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@amythebun thank you for your kind offer, but in germany buying spherical magnets are no problem.
