anyone up for the challenge of making an extruder utilise something like this.

3D Printing
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1

anyone up for the challenge of making an extruder utilise something like this.
heck i might give it a shot if i could figure the firmware out.
https://www.youtube.com/watch?v=pe19F4LaWog

2

@william_foster I think you’ve cracked something here. I’ve thought quite a bit about rotary motion transmission: how I can have a direct drive extruder with a remote motor. The only thing is I would want to put one motor on each side of the axis, so can we flip either the pink or blue pulley to the other side?

3

@raykholo yeah you can do that, it’s not really changing the mechanism at all.

4

@william_foster so now the question is: can we do 3 motors for a full corexy/ h bot mechanics and extruder control? I suppose even the makerbot/ ultimaker/ big box style where they have the y belt loops on either side with a shaft transmission could work.
Just thinking about how fast and powerful we could go with combo of direct drive and no moving motors.

5

@william_foster , @raykholo , check out this post on the E3D forum about two and a half years ago about Core XE–this may be a good place to start with some new designs!

6

For direct extrusion with a remote motor there’s the Flex3Drive.

7

Very interesting indeed

8

This would give flex3Drive a run for its money (I’m saying its not good, it’s best option there is, it just is very expensive for some of us ). I am pretty impressed, have been long looking for a remote drive with the characteristics exhibited by this mechanism. This could be the evolution of the CoreXY concept… what else can be brought in?

9

Yeah what @Ishaan_Gov ​ said, this is H bot style and have the same issues as H bots do. Look at the Core-XE mechanism instead!

10

From my pov this could be worked out as a parallel mechanism to the corexy so no firmware complexities are involved. Just one motor and a full perimeter belt path routed via bearings. Would engage the printed gear of the existing belted extruders.

But that is already different from what is show here.

11

I was playing around with this sort of concept a couple years ago. Here’s a write-up. https://groups.google.com/forum/?nomobile=true#!searchin/3dp-ideas/Corexyab/3dp-ideas/Xv-tC_bf708

12

@Ryan_Carlyle
I have read that as I was researching the existing literature on this concept, quite interesting. I/was there a prototype or why was it stalled?

13

@Florian_Ford In short, it’s too much design complexity for the amount of free time I have available and the apparent value. The cost/benefit trade-off of the CoreXYAB concept doesn’t seem worthwhile to me compared to simply building a stiffer gantry to better handle a direct/direct-drive extruder’s mass.

14

@Ryan_Carlyle
I understand the free time value but I sure this would benefit the printing speed factor compared with a higher mass extruder being thrown around the printed layer. Flex3Drive is quite appealing despite its high pricetag so an alternative system for mere mortals would be great. I wish I was as capable of developing it further …