<![CDATA[SoliForum - 3D Printing Community — water cooled hotend - the Kraken]]> https://www.soliforum.com/topic/4851/water-cooled-hotend-the-kraken/ Sat, 28 Dec 2013 08:38:31 +0000 PunBB <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45278/#p45278 Rough Order of Magnitude is you'll loose or gain 0-30 mm due to the fact all nozzles are displaced from 0,0 on the x - carriages.

Use the right most front, you'd be technically -15 to -25 ... Use the front left most you'd be +15 to +25 off axis from 0,0...

Check the technical drawings to be sure...its then just a simple maths problem

]]> Sat, 28 Dec 2013 08:38:31 +0000 https://www.soliforum.com/post/45278/#p45278 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45272/#p45272 how much does the extra hot ends affect the build area?

]]> Sat, 28 Dec 2013 02:20:31 +0000 https://www.soliforum.com/post/45272/#p45272 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45270/#p45270 I believe this is the board you are looking for:
https://www.sparkfun.com/products/10507

]]> Sat, 28 Dec 2013 02:09:39 +0000 https://www.soliforum.com/post/45270/#p45270 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45259/#p45259 the azteeg x3 with the latest shield can support 4 hotends and a heated bed as well as up to 8 steppers smile  Although I beleive most firmwares only support up to 3 hotends...

]]> Fri, 27 Dec 2013 21:52:54 +0000 https://www.soliforum.com/post/45259/#p45259 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45211/#p45211 You could go with a dual feed extruder.
http://hackaday.com/2013/08/10/dual-ext … per-motor/

]]> Fri, 27 Dec 2013 13:25:19 +0000 https://www.soliforum.com/post/45211/#p45211 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/45209/#p45209 I presume you could just use three of the extruders and drive it with the rumba board?

]]> Fri, 27 Dec 2013 11:58:56 +0000 https://www.soliforum.com/post/45209/#p45209 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44328/#p44328 elmoret wrote:

Weight would actually be reduced, as it is a pure bowden setup.

http://start3dprinting.com/2013/07/what … -extruder/

]]> Sat, 14 Dec 2013 15:19:09 +0000 https://www.soliforum.com/post/44328/#p44328 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44322/#p44322 Impressive design... but you would still have four separate colors. And afraid by the weight of 4 stepper motors. The hotend itself is quite light.
I think I saw a printer with 4 feeders and one extruder, with the ability to generate intermediate colors by mixing them when they get melted in the same extruder. Don't know how you manage to manage the feeders to take into account the various percentages of colors required.

]]> Sat, 14 Dec 2013 13:20:36 +0000 https://www.soliforum.com/post/44322/#p44322 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44312/#p44312 sounds good, gonna do some research!  I can't decide what about this hot end I like more, the fact that there is four extruders, or that it's water cooled..  I like water cooled anything.

]]> Sat, 14 Dec 2013 05:37:28 +0000 https://www.soliforum.com/post/44312/#p44312 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44309/#p44309 ITman496 wrote:

I almost want to use some kind of external shift register or some extra pins to have it select the drivers.  I wonder if you could have the cheapest printer board money can buy and then use that for extruders? lol

They usually have 4 axis so.. 

Can someone run two printrboards or sang's or ramps or whatever?

yeah, shift register, mux, its only the surronding circuitry that gets tweaked and the software codes - but same same outcome.

And yeah, if you google around, adrian bowyer i believe had a modified marlin to send gcode to a second board to drive multiple extruders as part of his colour mixing experiments....

]]> Sat, 14 Dec 2013 04:39:40 +0000 https://www.soliforum.com/post/44309/#p44309 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44306/#p44306 I almost want to use some kind of external shift register or some extra pins to have it select the drivers.  I wonder if you could have the cheapest printer board money can buy and then use that for extruders? lol

They usually have 4 axis so.. 

Can someone run two printrboards or sang's or ramps or whatever?

]]> Sat, 14 Dec 2013 04:06:43 +0000 https://www.soliforum.com/post/44306/#p44306 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44299/#p44299 ITman496 wrote:

You know, thats a good point..  How could you make the program send the right sleep/enable signals to each driver? I didn't know that was a feature.

Send M84 E to disable the Extruder until the next extruder move, and thus sticking the stepper driver in sleep mode (well, disables it via its enable pin anyway).

As for getting it to switch the appropriate mux (i'm imagining this would be best done as digitally switched small ssr's driving some *FETs.... ) ; then right now, would be easiest to run it through a post-process filter in RH that simply looks for the various snippets of tool-change gcode and does a simple 'insert line with M84 E ; M42 P7 S255; M42 P8 S0; M42 P9 S255' ; where P7, P8 and P9 are the mythical pins I have chosen to be the inputs to the mux to switch the input states to the steppers motor header and 0 or 255 control their state. The next extruder move will auto-re-enable the stepper, so no need to worry about that part. Would be easy enough to do this in python, perl, php or whatever your preferred script poison is. Meh, slic3r via its custom g-code might have some ability to add extra tool-change code anyway, in which case, it can be all done sans script....

Anyway - thats one way you could skin the cat.

]]> Sat, 14 Dec 2013 03:22:08 +0000 https://www.soliforum.com/post/44299/#p44299 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44296/#p44296 You know, thats a good point..  How could you make the program send the right sleep/enable signals to each driver? I didn't know that was a feature.

]]> Sat, 14 Dec 2013 03:10:54 +0000 https://www.soliforum.com/post/44296/#p44296 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44273/#p44273 given the physical arrangement means simultaneous printing options will be limited, there is always the perspective that you potentially dont need multiple drivers - just a 'safe' (for the drivers - meaning, set the motor to 'off', which disables the stepper chip) way to toggle which stepper is connected active to the stepper.

You potentially could do it all of a standard sanguinololu with just a small carrier board...

]]> Sat, 14 Dec 2013 01:03:10 +0000 https://www.soliforum.com/post/44273/#p44273 <![CDATA[Re: water cooled hotend - the Kraken]]> https://www.soliforum.com/post/44269/#p44269 I really really want this lol.. 

How does one go about getting four bowden extruder drivers though? lol

Well actually I suppose you could just print them..

]]> Sat, 14 Dec 2013 00:43:09 +0000 https://www.soliforum.com/post/44269/#p44269